From c43b5909031c7aa32ac65df3e392a12d32c45194 Mon Sep 17 00:00:00 2001
From: Iain Buclaw <ibuclaw@gdcproject.org>
Date: Sun, 2 Jan 2022 13:36:51 +0100
Subject: d: Merge upstream dmd 001bfd97b, druntime 759e6023, phobos 468788323.

D front-end changes:

    - Import latest changes to mainline.
    - Fix bad format specifiers in front-end errors (PR103840).
    - Refactoring of some leaf modules to the dmd/root package.
    - Updating copyright notice dates and urls.

Phobos changes:

    - Import latest changes to mainline.

gcc/d/ChangeLog:

	PR d/103840
	* dmd/MERGE: Merge upstream dmd 001bfd97b.
	* Make-lang.in (D_FRONTEND_OBJS): Rename d/complex.o to
	d/root-complex.o, and d/utf.o to d/root/utf.o.

libphobos/ChangeLog:

	* libdruntime/MERGE: Merge upstream druntime 759e6023.
	* src/MERGE: Merge upstream phobos 468788323.
---
 gcc/d/Make-lang.in                                 |   4 +-
 gcc/d/dmd/MERGE                                    |   2 +-
 gcc/d/dmd/README.md                                |   7 +-
 gcc/d/dmd/VERSION                                  |   2 +-
 gcc/d/dmd/access.d                                 |   6 +-
 gcc/d/dmd/aggregate.d                              |   6 +-
 gcc/d/dmd/aggregate.h                              |   6 +-
 gcc/d/dmd/aliasthis.d                              |   6 +-
 gcc/d/dmd/aliasthis.h                              |   6 +-
 gcc/d/dmd/apply.d                                  |   6 +-
 gcc/d/dmd/arrayop.d                                |   6 +-
 gcc/d/dmd/arraytypes.d                             |   6 +-
 gcc/d/dmd/arraytypes.h                             |   6 +-
 gcc/d/dmd/ast_node.d                               |   6 +-
 gcc/d/dmd/ast_node.h                               |   6 +-
 gcc/d/dmd/astenums.d                               |   4 +-
 gcc/d/dmd/attrib.d                                 |   6 +-
 gcc/d/dmd/attrib.h                                 |   6 +-
 gcc/d/dmd/blockexit.d                              |   6 +-
 gcc/d/dmd/builtin.d                                |   6 +-
 gcc/d/dmd/canthrow.d                               |   6 +-
 gcc/d/dmd/chkformat.d                              |  12 +-
 gcc/d/dmd/clone.d                                  |   6 +-
 gcc/d/dmd/common/file.d                            |   6 +-
 gcc/d/dmd/common/outbuffer.d                       |   6 +-
 gcc/d/dmd/common/outbuffer.h                       |   6 +-
 gcc/d/dmd/common/string.d                          |   6 +-
 gcc/d/dmd/compiler.d                               |   6 +-
 gcc/d/dmd/compiler.h                               |   6 +-
 gcc/d/dmd/complex.d                                | 112 ----
 gcc/d/dmd/complex_t.h                              |  71 ---
 gcc/d/dmd/cond.d                                   |   6 +-
 gcc/d/dmd/cond.h                                   |   6 +-
 gcc/d/dmd/constfold.d                              |  10 +-
 gcc/d/dmd/cparse.d                                 |   6 +-
 gcc/d/dmd/cppmangle.d                              |   6 +-
 gcc/d/dmd/ctfe.h                                   |   6 +-
 gcc/d/dmd/ctfeexpr.d                               |  21 +-
 gcc/d/dmd/ctorflow.d                               |   6 +-
 gcc/d/dmd/dcast.d                                  |   8 +-
 gcc/d/dmd/dclass.d                                 |   6 +-
 gcc/d/dmd/declaration.d                            |   6 +-
 gcc/d/dmd/declaration.h                            |   6 +-
 gcc/d/dmd/delegatize.d                             |   6 +-
 gcc/d/dmd/denum.d                                  |   6 +-
 gcc/d/dmd/dimport.d                                |   6 +-
 gcc/d/dmd/dinterpret.d                             |   8 +-
 gcc/d/dmd/dmacro.d                                 |   6 +-
 gcc/d/dmd/dmangle.d                                |   8 +-
 gcc/d/dmd/dmodule.d                                |   8 +-
 gcc/d/dmd/doc.d                                    |   8 +-
 gcc/d/dmd/doc.h                                    |   6 +-
 gcc/d/dmd/dscope.d                                 |   6 +-
 gcc/d/dmd/dstruct.d                                |   6 +-
 gcc/d/dmd/dsymbol.d                                |   6 +-
 gcc/d/dmd/dsymbol.h                                |   6 +-
 gcc/d/dmd/dsymbolsem.d                             |   8 +-
 gcc/d/dmd/dtemplate.d                              |   6 +-
 gcc/d/dmd/dtoh.d                                   |   6 +-
 gcc/d/dmd/dversion.d                               |   6 +-
 gcc/d/dmd/entity.d                                 |  10 +-
 gcc/d/dmd/enum.h                                   |   6 +-
 gcc/d/dmd/errors.d                                 |   6 +-
 gcc/d/dmd/errors.h                                 |   6 +-
 gcc/d/dmd/escape.d                                 |   6 +-
 gcc/d/dmd/expression.d                             |  52 +-
 gcc/d/dmd/expression.h                             |   8 +-
 gcc/d/dmd/expressionsem.d                          |  14 +-
 gcc/d/dmd/file_manager.d                           |   4 +-
 gcc/d/dmd/file_manager.h                           |   6 +-
 gcc/d/dmd/foreachvar.d                             |   6 +-
 gcc/d/dmd/func.d                                   |   6 +-
 gcc/d/dmd/globals.d                                |  14 +-
 gcc/d/dmd/globals.h                                |   8 +-
 gcc/d/dmd/gluelayer.d                              |   6 +-
 gcc/d/dmd/hdrgen.d                                 |   8 +-
 gcc/d/dmd/hdrgen.h                                 |   6 +-
 gcc/d/dmd/iasm.d                                   |   6 +-
 gcc/d/dmd/iasmgcc.d                                |   4 +-
 gcc/d/dmd/id.d                                     |   6 +-
 gcc/d/dmd/id.h                                     |   6 +-
 gcc/d/dmd/identifier.d                             |   8 +-
 gcc/d/dmd/identifier.h                             |   6 +-
 gcc/d/dmd/impcnvtab.d                              |   6 +-
 gcc/d/dmd/imphint.d                                |   6 +-
 gcc/d/dmd/import.h                                 |   6 +-
 gcc/d/dmd/importc.d                                |   6 +-
 gcc/d/dmd/init.d                                   |   6 +-
 gcc/d/dmd/init.h                                   |   6 +-
 gcc/d/dmd/initsem.d                                |   6 +-
 gcc/d/dmd/inline.d                                 |   6 +-
 gcc/d/dmd/intrange.d                               |   8 +-
 gcc/d/dmd/json.d                                   |   6 +-
 gcc/d/dmd/json.h                                   |   6 +-
 gcc/d/dmd/lambdacomp.d                             |   6 +-
 gcc/d/dmd/lexer.d                                  |   8 +-
 gcc/d/dmd/mangle.h                                 |   6 +-
 gcc/d/dmd/module.h                                 |   6 +-
 gcc/d/dmd/mtype.d                                  |   6 +-
 gcc/d/dmd/mtype.h                                  |   6 +-
 gcc/d/dmd/nogc.d                                   |   6 +-
 gcc/d/dmd/nspace.d                                 |   6 +-
 gcc/d/dmd/nspace.h                                 |   6 +-
 gcc/d/dmd/ob.d                                     |   6 +-
 gcc/d/dmd/objc.d                                   |   6 +-
 gcc/d/dmd/objc.h                                   |   6 +-
 gcc/d/dmd/opover.d                                 |   6 +-
 gcc/d/dmd/optimize.d                               |   6 +-
 gcc/d/dmd/parse.d                                  |  20 +-
 gcc/d/dmd/printast.d                               |   6 +-
 gcc/d/dmd/root/README.md                           |   5 +-
 gcc/d/dmd/root/aav.d                               |   6 +-
 gcc/d/dmd/root/array.d                             |   6 +-
 gcc/d/dmd/root/array.h                             |   6 +-
 gcc/d/dmd/root/bitarray.d                          |   6 +-
 gcc/d/dmd/root/bitarray.h                          |   6 +-
 gcc/d/dmd/root/complex.d                           | 112 ++++
 gcc/d/dmd/root/complex_t.h                         |  71 +++
 gcc/d/dmd/root/ctfloat.d                           |   6 +-
 gcc/d/dmd/root/ctfloat.h                           |   6 +-
 gcc/d/dmd/root/dcompat.h                           |   6 +-
 gcc/d/dmd/root/file.d                              |   6 +-
 gcc/d/dmd/root/file.h                              |   6 +-
 gcc/d/dmd/root/filename.d                          |   6 +-
 gcc/d/dmd/root/filename.h                          |   6 +-
 gcc/d/dmd/root/hash.d                              |   6 +-
 gcc/d/dmd/root/object.h                            |   6 +-
 gcc/d/dmd/root/optional.d                          |   6 +-
 gcc/d/dmd/root/optional.h                          |   6 +-
 gcc/d/dmd/root/port.d                              |   6 +-
 gcc/d/dmd/root/port.h                              |   6 +-
 gcc/d/dmd/root/region.d                            |   6 +-
 gcc/d/dmd/root/rmem.d                              |   6 +-
 gcc/d/dmd/root/rmem.h                              |   6 +-
 gcc/d/dmd/root/rootobject.d                        |   6 +-
 gcc/d/dmd/root/speller.d                           |   6 +-
 gcc/d/dmd/root/string.d                            |   6 +-
 gcc/d/dmd/root/stringtable.d                       |   8 +-
 gcc/d/dmd/root/utf.d                               | 561 +++++++++++++++++++++
 gcc/d/dmd/safe.d                                   |   6 +-
 gcc/d/dmd/sapply.d                                 |   6 +-
 gcc/d/dmd/scope.h                                  |   6 +-
 gcc/d/dmd/semantic2.d                              |   8 +-
 gcc/d/dmd/semantic3.d                              |   8 +-
 gcc/d/dmd/sideeffect.d                             |   6 +-
 gcc/d/dmd/statement.d                              |   8 +-
 gcc/d/dmd/statement.h                              |   6 +-
 gcc/d/dmd/statement_rewrite_walker.d               |   6 +-
 gcc/d/dmd/statementsem.d                           |   6 +-
 gcc/d/dmd/staticassert.d                           |   6 +-
 gcc/d/dmd/staticassert.h                           |   6 +-
 gcc/d/dmd/staticcond.d                             |   6 +-
 gcc/d/dmd/stmtstate.d                              |   6 +-
 gcc/d/dmd/target.d                                 |   8 +-
 gcc/d/dmd/target.h                                 |   6 +-
 gcc/d/dmd/template.h                               |   6 +-
 gcc/d/dmd/templateparamsem.d                       |   6 +-
 gcc/d/dmd/tokens.d                                 |   8 +-
 gcc/d/dmd/tokens.h                                 |   6 +-
 gcc/d/dmd/traits.d                                 |   6 +-
 gcc/d/dmd/typesem.d                                |  10 +-
 gcc/d/dmd/typinf.d                                 |   6 +-
 gcc/d/dmd/utf.d                                    | 561 ---------------------
 gcc/d/dmd/utils.d                                  |   6 +-
 gcc/d/dmd/version.h                                |   6 +-
 gcc/d/dmd/visitor.d                                |   6 +-
 gcc/d/dmd/visitor.h                                |   6 +-
 gcc/testsuite/gdc.test/compilable/99bottles.d      |   2 +-
 gcc/testsuite/gdc.test/compilable/art4769.d        |   2 +-
 gcc/testsuite/gdc.test/compilable/test69.d         |   2 +-
 gcc/testsuite/gdc.test/fail_compilation/fail11.d   |   2 +-
 gcc/testsuite/gdc.test/fail_compilation/fail15.d   |   2 +-
 gcc/testsuite/gdc.test/fail_compilation/fail35.d   |   2 +-
 gcc/testsuite/gdc.test/fail_compilation/fail73.d   |   2 +-
 .../fail_compilation/misc_parser_err_cov1.d        |  12 +-
 gcc/testsuite/gdc.test/fail_compilation/parseStc.d |  13 +-
 gcc/testsuite/gdc.test/runnable/mars1.d            |   4 +-
 gcc/testsuite/gdc.test/runnable/template1.d        |   4 +-
 gcc/testsuite/gdc.test/runnable/template2.d        |   2 +-
 gcc/testsuite/gdc.test/runnable/template9.d        |   2 +-
 gcc/testsuite/gdc.test/runnable/test12.d           |   2 +-
 gcc/testsuite/gdc.test/runnable/test15.d           |   2 +-
 gcc/testsuite/gdc.test/runnable/test20855.d        |   1 +
 gcc/testsuite/gdc.test/runnable/test22.d           |   2 +-
 gcc/testsuite/gdc.test/runnable/testarray.d        |   2 +-
 gcc/testsuite/gdc.test/runnable/testcontracts.d    |   2 +-
 gcc/testsuite/gdc.test/runnable/testsafe.d         |  10 +-
 gcc/testsuite/gdc.test/runnable/traits_child.d     |   2 +-
 gcc/testsuite/gdc.test/runnable/xtest46.d          |  10 +-
 189 files changed, 1347 insertions(+), 1320 deletions(-)
 delete mode 100644 gcc/d/dmd/complex.d
 delete mode 100644 gcc/d/dmd/complex_t.h
 create mode 100644 gcc/d/dmd/root/complex.d
 create mode 100644 gcc/d/dmd/root/complex_t.h
 create mode 100644 gcc/d/dmd/root/utf.d
 delete mode 100644 gcc/d/dmd/utf.d

(limited to 'gcc')

diff --git a/gcc/d/Make-lang.in b/gcc/d/Make-lang.in
index 06b8c89..6c90657 100644
--- a/gcc/d/Make-lang.in
+++ b/gcc/d/Make-lang.in
@@ -93,7 +93,6 @@ D_FRONTEND_OBJS = \
 	d/common-outbuffer.o \
 	d/common-string.o \
 	d/compiler.o \
-	d/complex.o \
 	d/cond.o \
 	d/constfold.o \
 	d/cparse.o \
@@ -157,6 +156,7 @@ D_FRONTEND_OBJS = \
 	d/root-aav.o \
 	d/root-array.o \
 	d/root-bitarray.o \
+	d/root-complex.o \
 	d/root-ctfloat.o \
 	d/root-file.o \
 	d/root-filename.o \
@@ -170,6 +170,7 @@ D_FRONTEND_OBJS = \
 	d/root-speller.o \
 	d/root-string.o \
 	d/root-stringtable.o \
+	d/root-utf.o \
 	d/safe.o \
 	d/sapply.o \
 	d/semantic2.o \
@@ -188,7 +189,6 @@ D_FRONTEND_OBJS = \
 	d/transitivevisitor.o \
 	d/typesem.o \
 	d/typinf.o \
-	d/utf.o \
 	d/utils.o \
 	d/visitor.o
 
diff --git a/gcc/d/dmd/MERGE b/gcc/d/dmd/MERGE
index b42576c..5915706 100644
--- a/gcc/d/dmd/MERGE
+++ b/gcc/d/dmd/MERGE
@@ -1,4 +1,4 @@
-ad8412530e607ffebec36f2dbdff1a6f2798faf7
+001bfd97b0e75423970260dac54f453be9b57f4c
 
 The first line of this file holds the git revision number of the last
 merge done from the dlang/dmd repository.
diff --git a/gcc/d/dmd/README.md b/gcc/d/dmd/README.md
index 3cb7e12..6b91e22 100644
--- a/gcc/d/dmd/README.md
+++ b/gcc/d/dmd/README.md
@@ -2,12 +2,12 @@
 
 This is the source code to the DMD compiler
 for the D Programming Language defined in the documents at
-http://dlang.org/
+https://dlang.org/
 
 These sources are free, they are redistributable and modifiable
 under the terms of the Boost Software License, Version 1.0.
 The terms of this license are in the file boostlicense.txt,
-or see http://www.boost.org/LICENSE_1_0.txt.
+or see https://www.boost.org/LICENSE_1_0.txt.
 
 If a particular file has a different license in it, that overrides
 this license for that file.
@@ -247,12 +247,9 @@ Note: many other utilities are in [dmd/root](https://github.com/dlang/dmd/tree/m
 
 | File                                                                              | Purpose                                           |
 |-----------------------------------------------------------------------------------|---------------------------------------------------|
-| [env.d](https://github.com/dlang/dmd/blob/master/src/dmd/env.d)                   | Modify environment variables                      |
 | [console.d](https://github.com/dlang/dmd/blob/master/src/dmd/console.d)           | Print error messages in color                     |
-| [utf.d](https://github.com/dlang/dmd/blob/master/src/dmd/utf.d)                   | Encoding/decoding Unicode text                    |
 | [file_manager.d](https://github.com/dlang/dmd/blob/master/src/dmd/file_manager.d) | Keep file contents in memory                      |
 | [utils.d](https://github.com/dlang/dmd/blob/master/src/dmd/utils.d)               | Utility functions related to files and file paths |
-| [complex.d](https://github.com/dlang/dmd/blob/master/src/dmd/complex.d)           | A complex number type                             |
 
 | File                                                                            | Purpose                                                       |
 |---------------------------------------------------------------------------------|---------------------------------------------------------------|
diff --git a/gcc/d/dmd/VERSION b/gcc/d/dmd/VERSION
index 822edd4..0aa03f4 100644
--- a/gcc/d/dmd/VERSION
+++ b/gcc/d/dmd/VERSION
@@ -1 +1 @@
-v2.098.1-beta.1
+v2.098.1
diff --git a/gcc/d/dmd/access.d b/gcc/d/dmd/access.d
index d8a6517..51ef049 100644
--- a/gcc/d/dmd/access.d
+++ b/gcc/d/dmd/access.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/attribute.html#visibility_attributes, Visibility Attributes)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/access.d, _access.d)
  * Documentation:  https://dlang.org/phobos/dmd_access.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/access.d
diff --git a/gcc/d/dmd/aggregate.d b/gcc/d/dmd/aggregate.d
index dc772e8..1add36a 100644
--- a/gcc/d/dmd/aggregate.d
+++ b/gcc/d/dmd/aggregate.d
@@ -4,9 +4,9 @@
  * Specification: $(LINK2 https://dlang.org/spec/struct.html, Structs, Unions),
  *                $(LINK2 https://dlang.org/spec/class.html, Class).
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/aggregate.d, _aggregate.d)
  * Documentation:  https://dlang.org/phobos/dmd_aggregate.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/aggregate.d
diff --git a/gcc/d/dmd/aggregate.h b/gcc/d/dmd/aggregate.h
index 48e5f4a..796144a 100644
--- a/gcc/d/dmd/aggregate.h
+++ b/gcc/d/dmd/aggregate.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/aggregate.h
  */
 
diff --git a/gcc/d/dmd/aliasthis.d b/gcc/d/dmd/aliasthis.d
index 80db47d..458e821 100644
--- a/gcc/d/dmd/aliasthis.d
+++ b/gcc/d/dmd/aliasthis.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/class.html#alias-this, Alias This)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/aliasthis.d, _aliasthis.d)
  * Documentation:  https://dlang.org/phobos/dmd_aliasthis.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/aliasthis.d
diff --git a/gcc/d/dmd/aliasthis.h b/gcc/d/dmd/aliasthis.h
index de93a8e..3b67903 100644
--- a/gcc/d/dmd/aliasthis.h
+++ b/gcc/d/dmd/aliasthis.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 2009-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 2009-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/aliasthis.h
  */
 
diff --git a/gcc/d/dmd/apply.d b/gcc/d/dmd/apply.d
index ab427e8..75b4af1 100644
--- a/gcc/d/dmd/apply.d
+++ b/gcc/d/dmd/apply.d
@@ -1,9 +1,9 @@
 /**
  * A depth-first visitor for expressions.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/apply.d, _apply.d)
  * Documentation:  https://dlang.org/phobos/dmd_apply.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/apply.d
diff --git a/gcc/d/dmd/arrayop.d b/gcc/d/dmd/arrayop.d
index a234501..e82413f 100644
--- a/gcc/d/dmd/arrayop.d
+++ b/gcc/d/dmd/arrayop.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/arrays.html#array-operations, Array Operations)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/arrayop.d, _arrayop.d)
  * Documentation:  https://dlang.org/phobos/dmd_arrayop.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/arrayop.d
diff --git a/gcc/d/dmd/arraytypes.d b/gcc/d/dmd/arraytypes.d
index b1f8d86..ffbaf95 100644
--- a/gcc/d/dmd/arraytypes.d
+++ b/gcc/d/dmd/arraytypes.d
@@ -1,9 +1,9 @@
 /**
  * Provide aliases for arrays of certain declarations or statements.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/arraytypes.d, _arraytypes.d)
  * Documentation:  https://dlang.org/phobos/dmd_arraytypes.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/arraytypes.d
diff --git a/gcc/d/dmd/arraytypes.h b/gcc/d/dmd/arraytypes.h
index 602d890..d7dfa0b 100644
--- a/gcc/d/dmd/arraytypes.h
+++ b/gcc/d/dmd/arraytypes.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 2006-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 2006-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/arraytypes.h
  */
 
diff --git a/gcc/d/dmd/ast_node.d b/gcc/d/dmd/ast_node.d
index 82d62a0..843cc02 100644
--- a/gcc/d/dmd/ast_node.d
+++ b/gcc/d/dmd/ast_node.d
@@ -1,9 +1,9 @@
 /**
  * Defines the base class for all nodes which are part of the AST.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/ast_node.d, _ast_node.d)
  * Documentation:  https://dlang.org/phobos/dmd_ast_node.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/ast_node.d
diff --git a/gcc/d/dmd/ast_node.h b/gcc/d/dmd/ast_node.h
index 5576dd7..0e04e38 100644
--- a/gcc/d/dmd/ast_node.h
+++ b/gcc/d/dmd/ast_node.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/ast_node.h
  */
 
diff --git a/gcc/d/dmd/astenums.d b/gcc/d/dmd/astenums.d
index f638765..3e86cfa 100644
--- a/gcc/d/dmd/astenums.d
+++ b/gcc/d/dmd/astenums.d
@@ -1,8 +1,8 @@
 /**
  * Defines enums common to dmd and dmd as parse library.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/astenums.d, _astenums.d)
  * Documentation:  https://dlang.org/phobos/dmd_astenums.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/astenums.d
diff --git a/gcc/d/dmd/attrib.d b/gcc/d/dmd/attrib.d
index e8704aa..5d44760 100644
--- a/gcc/d/dmd/attrib.d
+++ b/gcc/d/dmd/attrib.d
@@ -14,9 +14,9 @@
  * - Protection (`private`, `public`)
  * - Deprecated declarations (`@deprecated`)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/attrib.d, _attrib.d)
  * Documentation:  https://dlang.org/phobos/dmd_attrib.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/attrib.d
diff --git a/gcc/d/dmd/attrib.h b/gcc/d/dmd/attrib.h
index e63c80b..812729b 100644
--- a/gcc/d/dmd/attrib.h
+++ b/gcc/d/dmd/attrib.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/attrib.h
  */
 
diff --git a/gcc/d/dmd/blockexit.d b/gcc/d/dmd/blockexit.d
index 5945644..c4a9577 100644
--- a/gcc/d/dmd/blockexit.d
+++ b/gcc/d/dmd/blockexit.d
@@ -1,9 +1,9 @@
 /**
  * Find out in what ways control flow can exit a statement block.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/blockexit.d, _blockexit.d)
  * Documentation:  https://dlang.org/phobos/dmd_blockexit.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/blockexit.d
diff --git a/gcc/d/dmd/builtin.d b/gcc/d/dmd/builtin.d
index 2f5b6c7..06db97b 100644
--- a/gcc/d/dmd/builtin.d
+++ b/gcc/d/dmd/builtin.d
@@ -3,9 +3,9 @@
  *
  * Currently includes functions from `std.math`, `core.math` and `core.bitop`.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/builtin.d, _builtin.d)
  * Documentation:  https://dlang.org/phobos/dmd_builtin.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/builtin.d
diff --git a/gcc/d/dmd/canthrow.d b/gcc/d/dmd/canthrow.d
index b187715..e6eb0ac 100644
--- a/gcc/d/dmd/canthrow.d
+++ b/gcc/d/dmd/canthrow.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/function.html#nothrow-functions, Nothrow Functions)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/canthrow.d, _canthrow.d)
  * Documentation:  https://dlang.org/phobos/dmd_canthrow.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/canthrow.d
diff --git a/gcc/d/dmd/chkformat.d b/gcc/d/dmd/chkformat.d
index b168b4f..a3f3bc4 100644
--- a/gcc/d/dmd/chkformat.d
+++ b/gcc/d/dmd/chkformat.d
@@ -1,9 +1,9 @@
 /**
  * Check the arguments to `printf` and `scanf` against the `format` string.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/chkformat.d, _chkformat.d)
  * Documentation:  https://dlang.org/phobos/dmd_chkformat.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/chkformat.d
@@ -57,7 +57,7 @@ import dmd.target;
  *      `true` if errors occurred
  * References:
  * C99 7.19.6.1
- * http://www.cplusplus.com/reference/cstdio/printf/
+ * https://www.cplusplus.com/reference/cstdio/printf/
  */
 bool checkPrintfFormat(ref const Loc loc, scope const char[] format, scope Expression[] args, bool isVa_list)
 {
@@ -331,7 +331,7 @@ bool checkPrintfFormat(ref const Loc loc, scope const char[] format, scope Expre
  *      `true` if errors occurred
  * References:
  * C99 7.19.6.2
- * http://www.cplusplus.com/reference/cstdio/scanf/
+ * https://www.cplusplus.com/reference/cstdio/scanf/
  */
 bool checkScanfFormat(ref const Loc loc, scope const char[] format, scope Expression[] args, bool isVa_list)
 {
@@ -955,7 +955,7 @@ Format parseGenericFormatSpecifier(scope const char[] format,
         case 'm':
             if (useGNUExts)
             {
-                // http://www.gnu.org/software/libc/manual/html_node/Other-Output-Conversions.html
+                // https://www.gnu.org/software/libc/manual/html_node/Other-Output-Conversions.html
                 specifier = Format.GNU_m;
                 break;
             }
diff --git a/gcc/d/dmd/clone.d b/gcc/d/dmd/clone.d
index c536d25..1a143cb 100644
--- a/gcc/d/dmd/clone.d
+++ b/gcc/d/dmd/clone.d
@@ -2,9 +2,9 @@
  * Builds struct member functions if needed and not defined by the user.
  * Includes `opEquals`, `opAssign`, post blit, copy constructor and destructor.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/clone.d, _clone.d)
  * Documentation:  https://dlang.org/phobos/dmd_clone.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/clone.d
diff --git a/gcc/d/dmd/common/file.d b/gcc/d/dmd/common/file.d
index b8cde37..e4483d5 100644
--- a/gcc/d/dmd/common/file.d
+++ b/gcc/d/dmd/common/file.d
@@ -4,9 +4,9 @@
  * Functions and objects dedicated to file I/O and management. TODO: Move here artifacts
  * from places such as root/ so both the frontend and the backend have access to them.
  *
- * Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:   Walter Bright, http://www.digitalmars.com
- * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright: Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:   Walter Bright, https://www.digitalmars.com
+ * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/common/file.d, common/_file.d)
  * Documentation: https://dlang.org/phobos/dmd_common_file.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/common/file.d
diff --git a/gcc/d/dmd/common/outbuffer.d b/gcc/d/dmd/common/outbuffer.d
index c5a8437..e5cc43b 100644
--- a/gcc/d/dmd/common/outbuffer.d
+++ b/gcc/d/dmd/common/outbuffer.d
@@ -1,9 +1,9 @@
 /**
  * An expandable buffer in which you can write text or binary data.
  *
- * Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:   Walter Bright, http://www.digitalmars.com
- * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright: Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:   Walter Bright, https://www.digitalmars.com
+ * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/outbuffer.d, root/_outbuffer.d)
  * Documentation: https://dlang.org/phobos/dmd_root_outbuffer.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/outbuffer.d
diff --git a/gcc/d/dmd/common/outbuffer.h b/gcc/d/dmd/common/outbuffer.h
index ce23436..fed25c0 100644
--- a/gcc/d/dmd/common/outbuffer.h
+++ b/gcc/d/dmd/common/outbuffer.h
@@ -1,9 +1,9 @@
 
-/* Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+/* Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/common/outbuffer.h
  */
 
diff --git a/gcc/d/dmd/common/string.d b/gcc/d/dmd/common/string.d
index 026374a..d3bc24f 100644
--- a/gcc/d/dmd/common/string.d
+++ b/gcc/d/dmd/common/string.d
@@ -1,9 +1,9 @@
 /**
  * Common string functions including filename manipulation.
  *
- * Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:   Walter Bright, http://www.digitalmars.com
- * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright: Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:   Walter Bright, https://www.digitalmars.com
+ * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/common/string.d, common/_string.d)
  * Documentation: https://dlang.org/phobos/dmd_common_string.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/common/string.d
diff --git a/gcc/d/dmd/compiler.d b/gcc/d/dmd/compiler.d
index 28f9ba6..dd26d40 100644
--- a/gcc/d/dmd/compiler.d
+++ b/gcc/d/dmd/compiler.d
@@ -1,9 +1,9 @@
 /**
  * Describes a back-end compiler and implements compiler-specific actions.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/compiler.d, _compiler.d)
  * Documentation:  https://dlang.org/phobos/dmd_compiler.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/compiler.d
diff --git a/gcc/d/dmd/compiler.h b/gcc/d/dmd/compiler.h
index 27e87b6..e8b7704 100644
--- a/gcc/d/dmd/compiler.h
+++ b/gcc/d/dmd/compiler.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/compiler.h
  */
 
diff --git a/gcc/d/dmd/complex.d b/gcc/d/dmd/complex.d
deleted file mode 100644
index 84bf5e97..0000000
--- a/gcc/d/dmd/complex.d
+++ /dev/null
@@ -1,112 +0,0 @@
-/**
- * Implements a complex number type.
- *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
- * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/complex.d, _complex.d)
- * Documentation:  https://dlang.org/phobos/dmd_complex.html
- * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/complex.d
- */
-
-module dmd.complex;
-
-import dmd.root.ctfloat;
-
-extern (C++) struct complex_t
-{
-    real_t re;
-    real_t im;
-
-    this() @disable;
-
-    this(real_t re)
-    {
-        this(re, CTFloat.zero);
-    }
-
-    this(real_t re, real_t im)
-    {
-        this.re = re;
-        this.im = im;
-    }
-
-    extern (D) complex_t opBinary(string op)(complex_t y)
-        if (op == "+")
-    {
-        return complex_t(re + y.re, im + y.im);
-    }
-
-    extern (D) complex_t opBinary(string op)(complex_t y)
-        if (op == "-")
-    {
-        return complex_t(re - y.re, im - y.im);
-    }
-
-    extern (D) complex_t opUnary(string op)()
-        if (op == "-")
-    {
-        return complex_t(-re, -im);
-    }
-
-    extern (D) complex_t opBinary(string op)(complex_t y)
-        if (op == "*")
-    {
-        return complex_t(re * y.re - im * y.im, im * y.re + re * y.im);
-    }
-
-    extern (D) complex_t opBinaryRight(string op)(real_t x)
-        if (op == "*")
-    {
-        return complex_t(x) * this;
-    }
-
-    extern (D) complex_t opBinary(string op)(real_t y)
-        if (op == "*")
-    {
-        return this * complex_t(y);
-    }
-
-    extern (D) complex_t opBinary(string op)(real_t y)
-        if (op == "/")
-    {
-        return this / complex_t(y);
-    }
-
-    extern (D) complex_t opBinary(string op)(complex_t y)
-        if (op == "/")
-    {
-        if (CTFloat.fabs(y.re) < CTFloat.fabs(y.im))
-        {
-            const r = y.re / y.im;
-            const den = y.im + r * y.re;
-            return complex_t((re * r + im) / den, (im * r - re) / den);
-        }
-        else
-        {
-            const r = y.im / y.re;
-            const den = y.re + r * y.im;
-            return complex_t((re + r * im) / den, (im - r * re) / den);
-        }
-    }
-
-    extern (D) bool opCast(T : bool)() const
-    {
-        return re || im;
-    }
-
-    int opEquals(complex_t y) const
-    {
-        return re == y.re && im == y.im;
-    }
-}
-
-extern (C++) real_t creall(complex_t x)
-{
-    return x.re;
-}
-
-extern (C++) real_t cimagl(complex_t x)
-{
-    return x.im;
-}
diff --git a/gcc/d/dmd/complex_t.h b/gcc/d/dmd/complex_t.h
deleted file mode 100644
index 3359171..0000000
--- a/gcc/d/dmd/complex_t.h
+++ /dev/null
@@ -1,71 +0,0 @@
-
-/* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * written by Walter Bright
- * http://www.digitalmars.com
- * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
- * https://github.com/dlang/dmd/blob/master/src/dmd/complex_t.h
- */
-
-#pragma once
-
-#include "root/ctfloat.h"
-
-/* Roll our own complex type for compilers that don't support complex
- */
-
-struct complex_t
-{
-    real_t re;
-    real_t im;
-
-    complex_t(real_t re) : re(re), im(CTFloat::zero) {}
-    complex_t(real_t re, real_t im) : re(re), im(im) {}
-
-    complex_t operator + (complex_t y) { return complex_t(re + y.re, im + y.im); }
-    complex_t operator - (complex_t y) { return complex_t(re - y.re, im - y.im); }
-    complex_t operator - () { return complex_t(-re, -im); }
-    complex_t operator * (complex_t y) { return complex_t(re * y.re - im * y.im, im * y.re + re * y.im); }
-
-    complex_t operator / (complex_t y)
-    {
-        if (CTFloat::fabs(y.re) < CTFloat::fabs(y.im))
-        {
-            real_t r = y.re / y.im;
-            real_t den = y.im + r * y.re;
-            return complex_t((re * r + im) / den,
-                             (im * r - re) / den);
-        }
-        else
-        {
-            real_t r = y.im / y.re;
-            real_t den = y.re + r * y.im;
-            return complex_t((re + r * im) / den,
-                             (im - r * re) / den);
-        }
-    }
-
-    operator bool () { return re || im; }
-
-    int operator == (complex_t y) { return re == y.re && im == y.im; }
-    int operator != (complex_t y) { return re != y.re || im != y.im; }
-
-private:
-    complex_t() : re(CTFloat::zero), im(CTFloat::zero) {}
-};
-
-inline complex_t operator * (real_t x, complex_t y) { return complex_t(x) * y; }
-inline complex_t operator * (complex_t x, real_t y) { return x * complex_t(y); }
-inline complex_t operator / (complex_t x, real_t y) { return x / complex_t(y); }
-
-
-inline real_t creall(complex_t x)
-{
-    return x.re;
-}
-
-inline real_t cimagl(complex_t x)
-{
-    return x.im;
-}
diff --git a/gcc/d/dmd/cond.d b/gcc/d/dmd/cond.d
index abf2814..dee0a17 100644
--- a/gcc/d/dmd/cond.d
+++ b/gcc/d/dmd/cond.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/version.html, Conditional Compilation)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/cond.d, _cond.d)
  * Documentation:  https://dlang.org/phobos/dmd_cond.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/cond.d
diff --git a/gcc/d/dmd/cond.h b/gcc/d/dmd/cond.h
index 4f26116..d69c13e 100644
--- a/gcc/d/dmd/cond.h
+++ b/gcc/d/dmd/cond.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/cond.h
  */
 
diff --git a/gcc/d/dmd/constfold.d b/gcc/d/dmd/constfold.d
index 3cc358e..76e1d7f 100644
--- a/gcc/d/dmd/constfold.d
+++ b/gcc/d/dmd/constfold.d
@@ -5,9 +5,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/float.html#fp_const_folding, Floating Point Constant Folding)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/constfold.d, _constfold.d)
  * Documentation:  https://dlang.org/phobos/dmd_constfold.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/constfold.d
@@ -19,7 +19,6 @@ import core.stdc.string;
 import core.stdc.stdio;
 import dmd.arraytypes;
 import dmd.astenums;
-import dmd.complex;
 import dmd.ctfeexpr;
 import dmd.declaration;
 import dmd.dstruct;
@@ -27,13 +26,14 @@ import dmd.errors;
 import dmd.expression;
 import dmd.globals;
 import dmd.mtype;
+import dmd.root.complex;
 import dmd.root.ctfloat;
 import dmd.root.port;
 import dmd.root.rmem;
+import dmd.root.utf;
 import dmd.sideeffect;
 import dmd.target;
 import dmd.tokens;
-import dmd.utf;
 
 private enum LOG = false;
 
diff --git a/gcc/d/dmd/cparse.d b/gcc/d/dmd/cparse.d
index b1532ad..8d3f3b3 100644
--- a/gcc/d/dmd/cparse.d
+++ b/gcc/d/dmd/cparse.d
@@ -3,9 +3,9 @@
  *
  * Specification: C11
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/cparse.d, _cparse.d)
  * Documentation:  https://dlang.org/phobos/dmd_cparse.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/cparse.d
diff --git a/gcc/d/dmd/cppmangle.d b/gcc/d/dmd/cppmangle.d
index 4ad79da..7cb2092 100644
--- a/gcc/d/dmd/cppmangle.d
+++ b/gcc/d/dmd/cppmangle.d
@@ -4,9 +4,9 @@
  * This is the POSIX side of the implementation.
  * It exports two functions to C++, `toCppMangleItanium` and `cppTypeInfoMangleItanium`.
  *
- * Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors: Walter Bright, http://www.digitalmars.com
- * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright: Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors: Walter Bright, https://www.digitalmars.com
+ * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/cppmangle.d, _cppmangle.d)
  * Documentation:  https://dlang.org/phobos/dmd_cppmangle.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/cppmangle.d
diff --git a/gcc/d/dmd/ctfe.h b/gcc/d/dmd/ctfe.h
index 242dd55..5979aa7 100644
--- a/gcc/d/dmd/ctfe.h
+++ b/gcc/d/dmd/ctfe.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/ctfe.h
  */
 
diff --git a/gcc/d/dmd/ctfeexpr.d b/gcc/d/dmd/ctfeexpr.d
index baacaa6..43dce4b 100644
--- a/gcc/d/dmd/ctfeexpr.d
+++ b/gcc/d/dmd/ctfeexpr.d
@@ -1,9 +1,9 @@
 /**
  * CTFE for expressions involving pointers, slices, array concatenation etc.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/ctfeexpr.d, _ctfeexpr.d)
  * Documentation:  https://dlang.org/phobos/dmd_ctfeexpr.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/ctfeexpr.d
@@ -16,7 +16,6 @@ import core.stdc.stdlib;
 import core.stdc.string;
 import dmd.arraytypes;
 import dmd.astenums;
-import dmd.complex;
 import dmd.constfold;
 import dmd.compiler;
 import dmd.dclass;
@@ -29,6 +28,7 @@ import dmd.expression;
 import dmd.func;
 import dmd.globals;
 import dmd.mtype;
+import dmd.root.complex;
 import dmd.root.ctfloat;
 import dmd.root.port;
 import dmd.root.rmem;
@@ -1362,6 +1362,15 @@ private int ctfeRawCmp(const ref Loc loc, Expression e1, Expression e2, bool ide
         mem.xfree(used);
         return 0;
     }
+    else if (e1.op == EXP.assocArrayLiteral && e2.op == EXP.null_)
+    {
+        return e1.isAssocArrayLiteralExp.keys.dim != 0;
+    }
+    else if (e1.op == EXP.null_ && e2.op == EXP.assocArrayLiteral)
+    {
+        return e2.isAssocArrayLiteralExp.keys.dim != 0;
+    }
+
     error(loc, "CTFE internal error: bad compare of `%s` and `%s`", e1.toChars(), e2.toChars());
     assert(0);
 }
@@ -1553,7 +1562,7 @@ Expression ctfeIndex(UnionExp* pue, const ref Loc loc, Type type, Expression e1,
     {
         if (indx >= es1.len)
         {
-            error(loc, "string index %llu is out of bounds `[0 .. %zu]`", indx, es1.len);
+            error(loc, "string index %llu is out of bounds `[0 .. %llu]`", indx, cast(ulong)es1.len);
             return CTFEExp.cantexp;
         }
         emplaceExp!IntegerExp(pue, loc, es1.charAt(indx), type);
@@ -1564,7 +1573,7 @@ Expression ctfeIndex(UnionExp* pue, const ref Loc loc, Type type, Expression e1,
     {
         if (indx >= ale.elements.dim)
         {
-            error(loc, "array index %llu is out of bounds `%s[0 .. %zu]`", indx, e1.toChars(), ale.elements.dim);
+            error(loc, "array index %llu is out of bounds `%s[0 .. %llu]`", indx, e1.toChars(), cast(ulong)ale.elements.dim);
             return CTFEExp.cantexp;
         }
         Expression e = (*ale.elements)[cast(size_t)indx];
diff --git a/gcc/d/dmd/ctorflow.d b/gcc/d/dmd/ctorflow.d
index c8b61be..cc251b0 100644
--- a/gcc/d/dmd/ctorflow.d
+++ b/gcc/d/dmd/ctorflow.d
@@ -1,9 +1,9 @@
 /**
  * Manage flow analysis for constructors.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/ctorflow.d, _ctorflow.d)
  * Documentation:  https://dlang.org/phobos/dmd_ctorflow.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/ctorflow.d
diff --git a/gcc/d/dmd/dcast.d b/gcc/d/dmd/dcast.d
index a572a1f..4a80d17 100644
--- a/gcc/d/dmd/dcast.d
+++ b/gcc/d/dmd/dcast.d
@@ -1,9 +1,9 @@
 /**
  * Semantic analysis for cast-expressions.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/dcast.d, _dcast.d)
  * Documentation:  https://dlang.org/phobos/dmd_dcast.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/dcast.d
@@ -40,9 +40,9 @@ import dmd.opover;
 import dmd.root.ctfloat;
 import dmd.common.outbuffer;
 import dmd.root.rmem;
+import dmd.root.utf;
 import dmd.tokens;
 import dmd.typesem;
-import dmd.utf;
 import dmd.visitor;
 
 enum LOG = false;
diff --git a/gcc/d/dmd/dclass.d b/gcc/d/dmd/dclass.d
index 34a236b..1fb4779 100644
--- a/gcc/d/dmd/dclass.d
+++ b/gcc/d/dmd/dclass.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/class.html, Classes)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/dclass.d, _dclass.d)
  * Documentation:  https://dlang.org/phobos/dmd_dclass.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/dclass.d
diff --git a/gcc/d/dmd/declaration.d b/gcc/d/dmd/declaration.d
index 18c8ca2..aa143d4 100644
--- a/gcc/d/dmd/declaration.d
+++ b/gcc/d/dmd/declaration.d
@@ -2,9 +2,9 @@
  * Miscellaneous declarations, including typedef, alias, variable declarations including the
  * implicit this declaration, type tuples, ClassInfo, ModuleInfo and various TypeInfos.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/declaration.d, _declaration.d)
  * Documentation:  https://dlang.org/phobos/dmd_declaration.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/declaration.d
diff --git a/gcc/d/dmd/declaration.h b/gcc/d/dmd/declaration.h
index 884146e..353d36c 100644
--- a/gcc/d/dmd/declaration.h
+++ b/gcc/d/dmd/declaration.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/declaration.h
  */
 
diff --git a/gcc/d/dmd/delegatize.d b/gcc/d/dmd/delegatize.d
index 07c1bbd..77e09bc 100644
--- a/gcc/d/dmd/delegatize.d
+++ b/gcc/d/dmd/delegatize.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/function.html#lazy-params, Lazy Parameters)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/delegatize.d, _delegatize.d)
  * Documentation:  https://dlang.org/phobos/dmd_delegatize.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/delegatize.d
diff --git a/gcc/d/dmd/denum.d b/gcc/d/dmd/denum.d
index 54467d8..dd6dd41 100644
--- a/gcc/d/dmd/denum.d
+++ b/gcc/d/dmd/denum.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/enum.html, Enums)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/denum.d, _denum.d)
  * Documentation:  https://dlang.org/phobos/dmd_denum.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/denum.d
diff --git a/gcc/d/dmd/dimport.d b/gcc/d/dmd/dimport.d
index 8cd4364..156cce2 100644
--- a/gcc/d/dmd/dimport.d
+++ b/gcc/d/dmd/dimport.d
@@ -1,9 +1,9 @@
 /**
  * A `Dsymbol` representing a renamed import.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/dimport.d, _dimport.d)
  * Documentation:  https://dlang.org/phobos/dmd_dimport.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/dimport.d
diff --git a/gcc/d/dmd/dinterpret.d b/gcc/d/dmd/dinterpret.d
index fc5b9a8..fb8ed9b 100644
--- a/gcc/d/dmd/dinterpret.d
+++ b/gcc/d/dmd/dinterpret.d
@@ -3,9 +3,9 @@
  *
  * Specification: ($LINK2 https://dlang.org/spec/function.html#interpretation, Compile Time Function Execution (CTFE))
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/dinterpret.d, _dinterpret.d)
  * Documentation:  https://dlang.org/phobos/dmd_dinterpret.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/dinterpret.d
@@ -46,9 +46,9 @@ import dmd.root.array;
 import dmd.root.ctfloat;
 import dmd.root.region;
 import dmd.root.rootobject;
+import dmd.root.utf;
 import dmd.statement;
 import dmd.tokens;
-import dmd.utf;
 import dmd.visitor;
 
 /*************************************
diff --git a/gcc/d/dmd/dmacro.d b/gcc/d/dmd/dmacro.d
index 357f7bd..0e891fb 100644
--- a/gcc/d/dmd/dmacro.d
+++ b/gcc/d/dmd/dmacro.d
@@ -1,9 +1,9 @@
 /**
  * Text macro processor for Ddoc.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/dmacro.d, _dmacro.d)
  * Documentation:  https://dlang.org/phobos/dmd_dmacro.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/dmacro.d
diff --git a/gcc/d/dmd/dmangle.d b/gcc/d/dmd/dmangle.d
index 0659680..78d17b2 100644
--- a/gcc/d/dmd/dmangle.d
+++ b/gcc/d/dmd/dmangle.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/abi.html#name_mangling, Name Mangling)
  *
- * Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors: Walter Bright, http://www.digitalmars.com
- * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright: Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors: Walter Bright, https://www.digitalmars.com
+ * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/dmangle.d, _dmangle.d)
  * Documentation:  https://dlang.org/phobos/dmd_dmangle.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/dmangle.d
@@ -143,9 +143,9 @@ import dmd.common.outbuffer;
 import dmd.root.aav;
 import dmd.root.string;
 import dmd.root.stringtable;
+import dmd.root.utf;
 import dmd.target;
 import dmd.tokens;
-import dmd.utf;
 import dmd.visitor;
 
 private immutable char[TMAX] mangleChar =
diff --git a/gcc/d/dmd/dmodule.d b/gcc/d/dmd/dmodule.d
index 4e00713..46e89d0 100644
--- a/gcc/d/dmd/dmodule.d
+++ b/gcc/d/dmd/dmodule.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/module.html, Modules)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/dmodule.d, _dmodule.d)
  * Documentation:  https://dlang.org/phobos/dmd_dmodule.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/dmodule.d
@@ -837,7 +837,7 @@ extern (C++) final class Module : Package
         if (buf.length >= 2)
         {
             /* Convert all non-UTF-8 formats to UTF-8.
-             * BOM : http://www.unicode.org/faq/utf_bom.html
+             * BOM : https://www.unicode.org/faq/utf_bom.html
              * 00 00 FE FF  UTF-32BE, big-endian
              * FF FE 00 00  UTF-32LE, little-endian
              * FE FF        UTF-16BE, big-endian
diff --git a/gcc/d/dmd/doc.d b/gcc/d/dmd/doc.d
index f9b765c..d03b5bb 100644
--- a/gcc/d/dmd/doc.d
+++ b/gcc/d/dmd/doc.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/ddoc.html, Documentation Generator)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/doc.d, _doc.d)
  * Documentation:  https://dlang.org/phobos/dmd_doc.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/doc.d
@@ -49,8 +49,8 @@ import dmd.common.outbuffer;
 import dmd.root.port;
 import dmd.root.rmem;
 import dmd.root.string;
+import dmd.root.utf;
 import dmd.tokens;
-import dmd.utf;
 import dmd.utils;
 import dmd.visitor;
 
diff --git a/gcc/d/dmd/doc.h b/gcc/d/dmd/doc.h
index a144417..8dc2d9f 100644
--- a/gcc/d/dmd/doc.h
+++ b/gcc/d/dmd/doc.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/doc.h
  */
 
diff --git a/gcc/d/dmd/dscope.d b/gcc/d/dmd/dscope.d
index 42c0d18..07ebc27 100644
--- a/gcc/d/dmd/dscope.d
+++ b/gcc/d/dmd/dscope.d
@@ -3,9 +3,9 @@
  *
  * Not to be confused with the `scope` storage class.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/dscope.d, _dscope.d)
  * Documentation:  https://dlang.org/phobos/dmd_dscope.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/dscope.d
diff --git a/gcc/d/dmd/dstruct.d b/gcc/d/dmd/dstruct.d
index 1f05642..de5f145 100644
--- a/gcc/d/dmd/dstruct.d
+++ b/gcc/d/dmd/dstruct.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/struct.html, Structs, Unions)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/dstruct.d, _dstruct.d)
  * Documentation:  https://dlang.org/phobos/dmd_dstruct.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/dstruct.d
diff --git a/gcc/d/dmd/dsymbol.d b/gcc/d/dmd/dsymbol.d
index e34a94a..c4b3380 100644
--- a/gcc/d/dmd/dsymbol.d
+++ b/gcc/d/dmd/dsymbol.d
@@ -1,9 +1,9 @@
 /**
  * The base class for a D symbol, which can be a module, variable, function, enum, etc.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/dsymbol.d, _dsymbol.d)
  * Documentation:  https://dlang.org/phobos/dmd_dsymbol.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/dsymbol.d
diff --git a/gcc/d/dmd/dsymbol.h b/gcc/d/dmd/dsymbol.h
index 668b079..a6bd999 100644
--- a/gcc/d/dmd/dsymbol.h
+++ b/gcc/d/dmd/dsymbol.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/dsymbol.h
  */
 
diff --git a/gcc/d/dmd/dsymbolsem.d b/gcc/d/dmd/dsymbolsem.d
index 118b861..387dfe3 100644
--- a/gcc/d/dmd/dsymbolsem.d
+++ b/gcc/d/dmd/dsymbolsem.d
@@ -2,9 +2,9 @@
  * Does the semantic 1 pass on the AST, which looks at symbol declarations but not initializers
  * or function bodies.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/dsymbolsem.d, _dsymbolsem.d)
  * Documentation:  https://dlang.org/phobos/dmd_dsymbolsem.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/dsymbolsem.d
@@ -60,13 +60,13 @@ import dmd.root.filename;
 import dmd.common.outbuffer;
 import dmd.root.rmem;
 import dmd.root.rootobject;
+import dmd.root.utf;
 import dmd.semantic2;
 import dmd.semantic3;
 import dmd.sideeffect;
 import dmd.statementsem;
 import dmd.staticassert;
 import dmd.tokens;
-import dmd.utf;
 import dmd.utils;
 import dmd.statement;
 import dmd.target;
diff --git a/gcc/d/dmd/dtemplate.d b/gcc/d/dmd/dtemplate.d
index b1760dd..c0d17f7 100644
--- a/gcc/d/dmd/dtemplate.d
+++ b/gcc/d/dmd/dtemplate.d
@@ -28,9 +28,9 @@
  *   arguments, and uses it if found.
  * - Otherwise, the rest of semantic is run on the `TemplateInstance`.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/dtemplate.d, _dtemplate.d)
  * Documentation:  https://dlang.org/phobos/dmd_dtemplate.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/dtemplate.d
diff --git a/gcc/d/dmd/dtoh.d b/gcc/d/dmd/dtoh.d
index 51f53c8..dbc21b3 100644
--- a/gcc/d/dmd/dtoh.d
+++ b/gcc/d/dmd/dtoh.d
@@ -2,9 +2,9 @@
  * This module contains the implementation of the C++ header generation available through
  * the command line switch -Hc.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/dtohd, _dtoh.d)
  * Documentation:  https://dlang.org/phobos/dmd_dtoh.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/dtoh.d
diff --git a/gcc/d/dmd/dversion.d b/gcc/d/dmd/dversion.d
index 49ee4b3..94753bb 100644
--- a/gcc/d/dmd/dversion.d
+++ b/gcc/d/dmd/dversion.d
@@ -4,9 +4,9 @@
  * Specification: $(LINK2 https://dlang.org/spec/version.html#version-specification, Version Specification),
  *                $(LINK2 https://dlang.org/spec/version.html#debug_specification, Debug Specification).
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/dversion.d, _dversion.d)
  * Documentation:  https://dlang.org/phobos/dmd_dversion.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/dversion.d
diff --git a/gcc/d/dmd/entity.d b/gcc/d/dmd/entity.d
index f22dfdb..ef2fdef 100644
--- a/gcc/d/dmd/entity.d
+++ b/gcc/d/dmd/entity.d
@@ -3,9 +3,9 @@
  *
  * Specification $(LINK2 https://dlang.org/spec/entity.html, Named Character Entities)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/entity.d, _entity.d)
  * Documentation:  https://dlang.org/phobos/dmd_entity.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/entity.d
@@ -36,8 +36,8 @@ private:
 /*********************************************
  * Convert from named entity to its encoding.
  * For reference:
- *      http://www.htmlhelp.com/reference/html40/entities/
- *      http://www.w3.org/2003/entities/2007/w3centities-f.ent
+ *      https://www.htmlhelp.com/reference/html40/entities/
+ *      https://www.w3.org/2003/entities/2007/w3centities-f.ent
  */
 struct NameId
 {
diff --git a/gcc/d/dmd/enum.h b/gcc/d/dmd/enum.h
index 76c1235..ab80c8b 100644
--- a/gcc/d/dmd/enum.h
+++ b/gcc/d/dmd/enum.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/enum.h
  */
 
diff --git a/gcc/d/dmd/errors.d b/gcc/d/dmd/errors.d
index 91a5c77..114bd44 100644
--- a/gcc/d/dmd/errors.d
+++ b/gcc/d/dmd/errors.d
@@ -1,9 +1,9 @@
 /**
  * Functions for raising errors.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/errors.d, _errors.d)
  * Documentation:  https://dlang.org/phobos/dmd_errors.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/errors.d
diff --git a/gcc/d/dmd/errors.h b/gcc/d/dmd/errors.h
index 6d9587d..000242c 100644
--- a/gcc/d/dmd/errors.h
+++ b/gcc/d/dmd/errors.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/errors.h
  */
 
diff --git a/gcc/d/dmd/escape.d b/gcc/d/dmd/escape.d
index 62f87e5..e60ee9c 100644
--- a/gcc/d/dmd/escape.d
+++ b/gcc/d/dmd/escape.d
@@ -1,9 +1,9 @@
 /**
  * Most of the logic to implement scoped pointers and scoped references is here.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/escape.d, _escape.d)
  * Documentation:  https://dlang.org/phobos/dmd_escape.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/escape.d
diff --git a/gcc/d/dmd/expression.d b/gcc/d/dmd/expression.d
index 749a50a..523015e 100644
--- a/gcc/d/dmd/expression.d
+++ b/gcc/d/dmd/expression.d
@@ -3,9 +3,9 @@
  *
  * Specification: ($LINK2 https://dlang.org/spec/expression.html, Expressions)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/expression.d, _expression.d)
  * Documentation:  https://dlang.org/phobos/dmd_expression.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/expression.d
@@ -26,7 +26,6 @@ import dmd.astenums;
 import dmd.ast_node;
 import dmd.gluelayer;
 import dmd.canthrow;
-import dmd.complex;
 import dmd.constfold;
 import dmd.ctfeexpr;
 import dmd.ctorflow;
@@ -57,6 +56,7 @@ import dmd.nspace;
 import dmd.objc;
 import dmd.opover;
 import dmd.optimize;
+import dmd.root.complex;
 import dmd.root.ctfloat;
 import dmd.root.filename;
 import dmd.common.outbuffer;
@@ -64,12 +64,12 @@ import dmd.root.optional;
 import dmd.root.rmem;
 import dmd.root.rootobject;
 import dmd.root.string;
+import dmd.root.utf;
 import dmd.safe;
 import dmd.sideeffect;
 import dmd.target;
 import dmd.tokens;
 import dmd.typesem;
-import dmd.utf;
 import dmd.visitor;
 
 enum LOGSEMANTIC = false;
@@ -659,7 +659,7 @@ enum WANTvalue  = 0;    // default
 enum WANTexpand = 1;    // expand const/immutable variables if possible
 
 /***********************************************************
- * http://dlang.org/spec/expression.html#expression
+ * https://dlang.org/spec/expression.html#expression
  */
 extern (C++) abstract class Expression : ASTNode
 {
@@ -2262,7 +2262,7 @@ extern (C++) final class DsymbolExp : Expression
 }
 
 /***********************************************************
- * http://dlang.org/spec/expression.html#this
+ * https://dlang.org/spec/expression.html#this
  */
 extern (C++) class ThisExp : Expression
 {
@@ -2318,7 +2318,7 @@ extern (C++) class ThisExp : Expression
 }
 
 /***********************************************************
- * http://dlang.org/spec/expression.html#super
+ * https://dlang.org/spec/expression.html#super
  */
 extern (C++) final class SuperExp : ThisExp
 {
@@ -2334,7 +2334,7 @@ extern (C++) final class SuperExp : ThisExp
 }
 
 /***********************************************************
- * http://dlang.org/spec/expression.html#null
+ * https://dlang.org/spec/expression.html#null
  */
 extern (C++) final class NullExp : Expression
 {
@@ -2380,7 +2380,7 @@ extern (C++) final class NullExp : Expression
 }
 
 /***********************************************************
- * http://dlang.org/spec/expression.html#string_literals
+ * https://dlang.org/spec/expression.html#string_literals
  */
 extern (C++) final class StringExp : Expression
 {
@@ -2904,7 +2904,7 @@ extern (C++) final class TupleExp : Expression
 /***********************************************************
  * [ e1, e2, e3, ... ]
  *
- * http://dlang.org/spec/expression.html#array_literals
+ * https://dlang.org/spec/expression.html#array_literals
  */
 extern (C++) final class ArrayLiteralExp : Expression
 {
@@ -3069,7 +3069,7 @@ extern (C++) final class ArrayLiteralExp : Expression
 /***********************************************************
  * [ key0 : value0, key1 : value1, ... ]
  *
- * http://dlang.org/spec/expression.html#associative_array_literals
+ * https://dlang.org/spec/expression.html#associative_array_literals
  */
 extern (C++) final class AssocArrayLiteralExp : Expression
 {
@@ -5423,7 +5423,7 @@ extern (C++) final class VectorArrayExp : UnaExp
 /***********************************************************
  * e1 [lwr .. upr]
  *
- * http://dlang.org/spec/expression.html#slice_expressions
+ * https://dlang.org/spec/expression.html#slice_expressions
  */
 extern (C++) final class SliceExp : UnaExp
 {
@@ -5506,7 +5506,7 @@ extern (C++) final class ArrayLengthExp : UnaExp
 /***********************************************************
  * e1 [ a0, a1, a2, a3 ,... ]
  *
- * http://dlang.org/spec/expression.html#index_expressions
+ * https://dlang.org/spec/expression.html#index_expressions
  */
 extern (C++) final class ArrayExp : UnaExp
 {
@@ -6208,7 +6208,7 @@ extern (C++) final class CatDcharAssignExp : CatAssignExp
 }
 
 /***********************************************************
- * http://dlang.org/spec/expression.html#add_expressions
+ * https://dlang.org/spec/expression.html#add_expressions
  */
 extern (C++) final class AddExp : BinExp
 {
@@ -6239,7 +6239,7 @@ extern (C++) final class MinExp : BinExp
 }
 
 /***********************************************************
- * http://dlang.org/spec/expression.html#cat_expressions
+ * https://dlang.org/spec/expression.html#cat_expressions
  */
 extern (C++) final class CatExp : BinExp
 {
@@ -6262,7 +6262,7 @@ extern (C++) final class CatExp : BinExp
 }
 
 /***********************************************************
- * http://dlang.org/spec/expression.html#mul_expressions
+ * https://dlang.org/spec/expression.html#mul_expressions
  */
 extern (C++) final class MulExp : BinExp
 {
@@ -6278,7 +6278,7 @@ extern (C++) final class MulExp : BinExp
 }
 
 /***********************************************************
- * http://dlang.org/spec/expression.html#mul_expressions
+ * https://dlang.org/spec/expression.html#mul_expressions
  */
 extern (C++) final class DivExp : BinExp
 {
@@ -6294,7 +6294,7 @@ extern (C++) final class DivExp : BinExp
 }
 
 /***********************************************************
- * http://dlang.org/spec/expression.html#mul_expressions
+ * https://dlang.org/spec/expression.html#mul_expressions
  */
 extern (C++) final class ModExp : BinExp
 {
@@ -6310,7 +6310,7 @@ extern (C++) final class ModExp : BinExp
 }
 
 /***********************************************************
- * http://dlang.org/spec/expression.html#pow_expressions
+ * https://dlang.org/spec/expression.html#pow_expressions
  */
 extern (C++) final class PowExp : BinExp
 {
@@ -6416,8 +6416,8 @@ extern (C++) final class XorExp : BinExp
 }
 
 /***********************************************************
- * http://dlang.org/spec/expression.html#andand_expressions
- * http://dlang.org/spec/expression.html#oror_expressions
+ * https://dlang.org/spec/expression.html#andand_expressions
+ * https://dlang.org/spec/expression.html#oror_expressions
  */
 extern (C++) final class LogicalExp : BinExp
 {
@@ -6437,7 +6437,7 @@ extern (C++) final class LogicalExp : BinExp
  * `op` is one of:
  *      EXP.lessThan, EXP.lessOrEqual, EXP.greaterThan, EXP.greaterOrEqual
  *
- * http://dlang.org/spec/expression.html#relation_expressions
+ * https://dlang.org/spec/expression.html#relation_expressions
  */
 extern (C++) final class CmpExp : BinExp
 {
@@ -6490,7 +6490,7 @@ extern (C++) final class RemoveExp : BinExp
  *
  * EXP.equal and EXP.notEqual
  *
- * http://dlang.org/spec/expression.html#equality_expressions
+ * https://dlang.org/spec/expression.html#equality_expressions
  */
 extern (C++) final class EqualExp : BinExp
 {
@@ -6511,7 +6511,7 @@ extern (C++) final class EqualExp : BinExp
  *
  * EXP.identity and EXP.notIdentity
  *
- *  http://dlang.org/spec/expression.html#identity_expressions
+ *  https://dlang.org/spec/expression.html#identity_expressions
  */
 extern (C++) final class IdentityExp : BinExp
 {
@@ -6530,7 +6530,7 @@ extern (C++) final class IdentityExp : BinExp
 /***********************************************************
  * `econd ? e1 : e2`
  *
- * http://dlang.org/spec/expression.html#conditional_expressions
+ * https://dlang.org/spec/expression.html#conditional_expressions
  */
 extern (C++) final class CondExp : BinExp
 {
diff --git a/gcc/d/dmd/expression.h b/gcc/d/dmd/expression.h
index 411822c..f848cce 100644
--- a/gcc/d/dmd/expression.h
+++ b/gcc/d/dmd/expression.h
@@ -1,22 +1,22 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/expression.h
  */
 
 #pragma once
 
 #include "ast_node.h"
-#include "complex_t.h"
 #include "globals.h"
 #include "arraytypes.h"
 #include "visitor.h"
 #include "tokens.h"
 
+#include "root/complex_t.h"
 #include "root/dcompat.h"
 #include "root/optional.h"
 
diff --git a/gcc/d/dmd/expressionsem.d b/gcc/d/dmd/expressionsem.d
index 2f1cd47..1008606 100644
--- a/gcc/d/dmd/expressionsem.d
+++ b/gcc/d/dmd/expressionsem.d
@@ -3,9 +3,9 @@
  *
  * Specification: ($LINK2 https://dlang.org/spec/expression.html, Expressions)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/expressionsem.d, _expressionsem.d)
  * Documentation:  https://dlang.org/phobos/dmd_expressionsem.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/expressionsem.d
@@ -67,6 +67,7 @@ import dmd.root.filename;
 import dmd.common.outbuffer;
 import dmd.root.rootobject;
 import dmd.root.string;
+import dmd.root.utf;
 import dmd.semantic2;
 import dmd.semantic3;
 import dmd.sideeffect;
@@ -76,7 +77,6 @@ import dmd.tokens;
 import dmd.traits;
 import dmd.typesem;
 import dmd.typinf;
-import dmd.utf;
 import dmd.utils;
 import dmd.visitor;
 
@@ -5980,7 +5980,7 @@ private extern (C++) final class ExpressionSemanticVisitor : Visitor
 
         /* Be wary of CWE-22: Improper Limitation of a Pathname to a Restricted Directory
          * ('Path Traversal') attacks.
-         * http://cwe.mitre.org/data/definitions/22.html
+         * https://cwe.mitre.org/data/definitions/22.html
          */
 
         if (FileName.absolute(namez))
@@ -6013,7 +6013,7 @@ private extern (C++) final class ExpressionSemanticVisitor : Visitor
                 const attr = FileName.exists(path);
                 const(char)* err = attr == 2 ? "" :
                     (attr == 1 ? " (not a directory)" : " (path not found)");
-                e.errorSupplemental("[%zu]: `%s`%s", idx, path, err);
+                e.errorSupplemental("[%llu]: `%s`%s", cast(ulong)idx, path, err);
             }
             return setError();
         }
@@ -13108,7 +13108,7 @@ private bool fit(StructDeclaration sd, const ref Loc loc, Scope* sc, Expressions
                 // CTFE sometimes creates null as hidden pointer; we'll allow this.
                 continue;
             }
-                .error(loc, "more initializers than fields (%zu) of `%s`", nfields, sd.toChars());
+                .error(loc, "more initializers than fields (%llu) of `%s`", cast(ulong)nfields, sd.toChars());
             return false;
         }
         VarDeclaration v = sd.fields[i];
diff --git a/gcc/d/dmd/file_manager.d b/gcc/d/dmd/file_manager.d
index 05aeb7d..0ca756e 100644
--- a/gcc/d/dmd/file_manager.d
+++ b/gcc/d/dmd/file_manager.d
@@ -1,8 +1,8 @@
 /**
  * Read a file from disk and store it in memory.
  *
- * Copyright: Copyright (C) 1999-2020 by The D Language Foundation, All Rights Reserved
- * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright: Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/file_manager.d, _file_manager.d)
  * Documentation:  https://dlang.org/phobos/dmd_file_manager.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/file_manager.d
diff --git a/gcc/d/dmd/file_manager.h b/gcc/d/dmd/file_manager.h
index 7488fab1..6705f24 100644
--- a/gcc/d/dmd/file_manager.h
+++ b/gcc/d/dmd/file_manager.h
@@ -1,9 +1,9 @@
 
-/* Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+/* Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/file_manager.h
  */
 
diff --git a/gcc/d/dmd/foreachvar.d b/gcc/d/dmd/foreachvar.d
index e9a43f9..b779eaeee 100644
--- a/gcc/d/dmd/foreachvar.d
+++ b/gcc/d/dmd/foreachvar.d
@@ -1,9 +1,9 @@
 /**
  * Utility to visit every variable in an expression.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/foreachvar.d, _foreachvar.d)
  * Documentation:  https://dlang.org/phobos/dmd_foreachvar.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/foreachvar.d
diff --git a/gcc/d/dmd/func.d b/gcc/d/dmd/func.d
index da33587..b5148be 100644
--- a/gcc/d/dmd/func.d
+++ b/gcc/d/dmd/func.d
@@ -8,9 +8,9 @@
  * - `invariant`
  * - `unittest`
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/func.d, _func.d)
  * Documentation:  https://dlang.org/phobos/dmd_func.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/func.d
diff --git a/gcc/d/dmd/globals.d b/gcc/d/dmd/globals.d
index 7409dcc..22ccddd 100644
--- a/gcc/d/dmd/globals.d
+++ b/gcc/d/dmd/globals.d
@@ -1,9 +1,9 @@
 /**
  * Stores command line options and contains other miscellaneous declarations.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/globals.d, _globals.d)
  * Documentation:  https://dlang.org/phobos/dmd_globals.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/globals.d
@@ -126,7 +126,7 @@ extern (C++) struct Param
     bool stackstomp;            // add stack stomping code
     bool useUnitTests;          // generate unittest code
     bool useInline = false;     // inline expand functions
-    FeatureState useDIP25;  // implement http://wiki.dlang.org/DIP25
+    FeatureState useDIP25;  // implement https://wiki.dlang.org/DIP25
     FeatureState useDIP1000; // implement https://dlang.org/spec/memory-safe-d.html#scope-return-params
     bool useDIP1021;        // implement https://github.com/dlang/DIPs/blob/master/DIPs/accepted/DIP1021.md
     bool release;           // build release version
@@ -162,7 +162,7 @@ extern (C++) struct Param
                             // https://issues.dlang.org/show_bug.cgi?id=14246
     bool fieldwise;         // do struct equality testing field-wise rather than by memcmp()
     bool rvalueRefParam;    // allow rvalues to be arguments to ref parameters
-                            // http://dconf.org/2019/talks/alexandrescu.html
+                            // https://dconf.org/2019/talks/alexandrescu.html
                             // https://gist.github.com/andralex/e5405a5d773f07f73196c05f8339435a
                             // https://digitalmars.com/d/archives/digitalmars/D/Binding_rvalues_to_ref_parameters_redux_325087.html
                             // Implementation: https://github.com/dlang/dmd/pull/9817
@@ -303,7 +303,7 @@ extern (C++) struct Global
 {
     const(char)[] inifilename; /// filename of configuration file as given by `-conf=`, or default value
 
-    string copyright = "Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved";
+    string copyright = "Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved";
     string written = "written by Walter Bright";
 
     Array!(const(char)*)* path;         /// Array of char*'s which form the import lookup path
@@ -655,7 +655,7 @@ enum PINLINE : ubyte
     always,   /// always inline
 }
 
-alias StorageClass = uinteger_t;
+alias StorageClass = ulong;
 
 /// Collection of global state
 extern (C++) __gshared Global global;
diff --git a/gcc/d/dmd/globals.h b/gcc/d/dmd/globals.h
index 2275ec5..4e76967 100644
--- a/gcc/d/dmd/globals.h
+++ b/gcc/d/dmd/globals.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/globals.h
  */
 
@@ -115,7 +115,7 @@ struct Param
     bool stackstomp;    // add stack stomping code
     bool useUnitTests;  // generate unittest code
     bool useInline;     // inline expand functions
-    FeatureState useDIP25;      // implement http://wiki.dlang.org/DIP25
+    FeatureState useDIP25;      // implement https://wiki.dlang.org/DIP25
     FeatureState useDIP1000; // implement https://dlang.org/spec/memory-safe-d.html#scope-return-params
     bool useDIP1021;    // implement https://github.com/dlang/DIPs/blob/master/DIPs/accepted/DIP1021.md
     bool release;       // build release version
diff --git a/gcc/d/dmd/gluelayer.d b/gcc/d/dmd/gluelayer.d
index 4018126..73a1f00 100644
--- a/gcc/d/dmd/gluelayer.d
+++ b/gcc/d/dmd/gluelayer.d
@@ -3,9 +3,9 @@
  *
  * This 'glues' either the DMC or GCC back-end to the front-end.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/gluelayer.d, _gluelayer.d)
  * Documentation:  https://dlang.org/phobos/dmd_gluelayer.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/gluelayer.d
diff --git a/gcc/d/dmd/hdrgen.d b/gcc/d/dmd/hdrgen.d
index a454298..6fc86c3 100644
--- a/gcc/d/dmd/hdrgen.d
+++ b/gcc/d/dmd/hdrgen.d
@@ -3,9 +3,9 @@
  *
  * Also used to convert AST nodes to D code in general, e.g. for error messages or `printf` debugging.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/hdrgen.d, _hdrgen.d)
  * Documentation:  https://dlang.org/phobos/dmd_hdrgen.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/hdrgen.d
@@ -21,7 +21,6 @@ import dmd.aliasthis;
 import dmd.arraytypes;
 import dmd.astenums;
 import dmd.attrib;
-import dmd.complex;
 import dmd.cond;
 import dmd.ctfeexpr;
 import dmd.dclass;
@@ -43,6 +42,7 @@ import dmd.init;
 import dmd.mtype;
 import dmd.nspace;
 import dmd.parse;
+import dmd.root.complex;
 import dmd.root.ctfloat;
 import dmd.common.outbuffer;
 import dmd.root.rootobject;
diff --git a/gcc/d/dmd/hdrgen.h b/gcc/d/dmd/hdrgen.h
index 531d5d8..0488c51 100644
--- a/gcc/d/dmd/hdrgen.h
+++ b/gcc/d/dmd/hdrgen.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Dave Fladebo
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/hdrgen.h
  */
 
diff --git a/gcc/d/dmd/iasm.d b/gcc/d/dmd/iasm.d
index df8d1c9..29aca3e 100644
--- a/gcc/d/dmd/iasm.d
+++ b/gcc/d/dmd/iasm.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/iasm.html, Inline Assembler)
  *
- *              Copyright (C) 2018-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ *              Copyright (C) 2018-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/iasm.d, _iasm.d)
  * Documentation:  https://dlang.org/phobos/dmd_iasm.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/iasm.d
diff --git a/gcc/d/dmd/iasmgcc.d b/gcc/d/dmd/iasmgcc.d
index cd30117..495126d 100644
--- a/gcc/d/dmd/iasmgcc.d
+++ b/gcc/d/dmd/iasmgcc.d
@@ -1,9 +1,9 @@
 /**
  * Inline assembler for the GCC D compiler.
  *
- *              Copyright (C) 2018-2021 by The D Language Foundation, All Rights Reserved
+ *              Copyright (C) 2018-2022 by The D Language Foundation, All Rights Reserved
  * Authors:     Iain Buclaw
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/iasmgcc.d, _iasmgcc.d)
  * Documentation:  https://dlang.org/phobos/dmd_iasmgcc.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/iasmgcc.d
diff --git a/gcc/d/dmd/id.d b/gcc/d/dmd/id.d
index d33b676..cef1b8e 100644
--- a/gcc/d/dmd/id.d
+++ b/gcc/d/dmd/id.d
@@ -1,9 +1,9 @@
 /**
  * Contains the `Id` struct with a list of predefined symbols the compiler knows about.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/id.d, _id.d)
  * Documentation:  https://dlang.org/phobos/dmd_id.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/id.d
diff --git a/gcc/d/dmd/id.h b/gcc/d/dmd/id.h
index 8066747..984c203 100644
--- a/gcc/d/dmd/id.h
+++ b/gcc/d/dmd/id.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 2017-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 2017-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/id.h
  */
 
diff --git a/gcc/d/dmd/identifier.d b/gcc/d/dmd/identifier.d
index 8add74a..b42b4a1 100644
--- a/gcc/d/dmd/identifier.d
+++ b/gcc/d/dmd/identifier.d
@@ -1,9 +1,9 @@
 /**
  * Defines an identifier, which is the name of a `Dsymbol`.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/identifier.d, _identifier.d)
  * Documentation:  https://dlang.org/phobos/dmd_identifier.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/identifier.d
@@ -20,8 +20,8 @@ import dmd.common.outbuffer;
 import dmd.root.rootobject;
 import dmd.root.string;
 import dmd.root.stringtable;
+import dmd.root.utf;
 import dmd.tokens;
-import dmd.utf;
 
 
 /***********************************************************
diff --git a/gcc/d/dmd/identifier.h b/gcc/d/dmd/identifier.h
index 790d5a0..4c748be 100644
--- a/gcc/d/dmd/identifier.h
+++ b/gcc/d/dmd/identifier.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/identifier.h
  */
 
diff --git a/gcc/d/dmd/impcnvtab.d b/gcc/d/dmd/impcnvtab.d
index db09f0c..ab46f5e 100644
--- a/gcc/d/dmd/impcnvtab.d
+++ b/gcc/d/dmd/impcnvtab.d
@@ -6,9 +6,9 @@
  * Specification: $(LINK2 https://dlang.org/spec/type.html#integer-promotions, Integer Promotions),
  *   $(LINK2 https://dlang.org/spec/type.html#usual-arithmetic-conversions, Usual Arithmetic Conversions).
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/impcnvtab.d, _impcnvtab.d)
  * Documentation:  https://dlang.org/phobos/dmd_impcnvtab.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/impcnvtab.d
diff --git a/gcc/d/dmd/imphint.d b/gcc/d/dmd/imphint.d
index e1919a6..f03113d 100644
--- a/gcc/d/dmd/imphint.d
+++ b/gcc/d/dmd/imphint.d
@@ -3,9 +3,9 @@
  *
  * For example, prompt to `import std.stdio` when using `writeln`.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/imphint.d, _imphint.d)
  * Documentation:  https://dlang.org/phobos/dmd_imphint.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/imphint.d
diff --git a/gcc/d/dmd/import.h b/gcc/d/dmd/import.h
index 34c5a05..5e7550e 100644
--- a/gcc/d/dmd/import.h
+++ b/gcc/d/dmd/import.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/import.h
  */
 
diff --git a/gcc/d/dmd/importc.d b/gcc/d/dmd/importc.d
index 5ee961f..1b92386 100644
--- a/gcc/d/dmd/importc.d
+++ b/gcc/d/dmd/importc.d
@@ -3,9 +3,9 @@
  *
  * Specification: C11
  *
- * Copyright:   Copyright (C) 2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 2021-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/importc.d, _importc.d)
  * Documentation:  https://dlang.org/phobos/dmd_importc.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/importc.d
diff --git a/gcc/d/dmd/init.d b/gcc/d/dmd/init.d
index d036ee1..179e0b6 100644
--- a/gcc/d/dmd/init.d
+++ b/gcc/d/dmd/init.d
@@ -1,9 +1,9 @@
 /**
  * Defines initializers of variables, e.g. the array literal in `int[3] x = [0, 1, 2]`.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/init.d, _init.d)
  * Documentation:  https://dlang.org/phobos/dmd_init.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/init.d
diff --git a/gcc/d/dmd/init.h b/gcc/d/dmd/init.h
index 23204b8..c6c8c62 100644
--- a/gcc/d/dmd/init.h
+++ b/gcc/d/dmd/init.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/init.h
  */
 
diff --git a/gcc/d/dmd/initsem.d b/gcc/d/dmd/initsem.d
index 826b0ad..6b10ace 100644
--- a/gcc/d/dmd/initsem.d
+++ b/gcc/d/dmd/initsem.d
@@ -1,9 +1,9 @@
 /**
  * Semantic analysis of initializers.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/initsem.d, _initsem.d)
  * Documentation:  https://dlang.org/phobos/dmd_initsem.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/initsem.d
diff --git a/gcc/d/dmd/inline.d b/gcc/d/dmd/inline.d
index cfd619a..25982a6 100644
--- a/gcc/d/dmd/inline.d
+++ b/gcc/d/dmd/inline.d
@@ -4,9 +4,9 @@
  * The AST is traversed, and every function call is considered for inlining using `inlinecost.d`.
  * The function call is then inlined if this cost is below a threshold.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/inline.d, _inline.d)
  * Documentation:  https://dlang.org/phobos/dmd_inline.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/inline.d
diff --git a/gcc/d/dmd/intrange.d b/gcc/d/dmd/intrange.d
index 9b70f49..d0206b6 100644
--- a/gcc/d/dmd/intrange.d
+++ b/gcc/d/dmd/intrange.d
@@ -1,9 +1,9 @@
 /**
  * Implement $(LINK2 https://digitalmars.com/articles/b62.html, Value Range Propagation).
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/intrange.d, _intrange.d)
  * Documentation:  https://dlang.org/phobos/dmd_intrange.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/intrange.d
@@ -255,7 +255,7 @@ struct SignExtendedNumber
         uinteger_t v = copySign(value, negative);
 
         // compute base-2 log of 'v' to determine the maximum allowed bits to shift.
-        // Ref: http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog
+        // Ref: https://graphics.stanford.edu/~seander/bithacks.html#IntegerLog
 
         // Why is this a size_t? Looks like a bug.
         size_t r, s;
diff --git a/gcc/d/dmd/json.d b/gcc/d/dmd/json.d
index fef5150..ba2dd17 100644
--- a/gcc/d/dmd/json.d
+++ b/gcc/d/dmd/json.d
@@ -1,9 +1,9 @@
 /**
  * Code for generating .json descriptions of the module when passing the `-X` flag to dmd.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/json.d, _json.d)
  * Documentation:  https://dlang.org/phobos/dmd_json.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/json.d
diff --git a/gcc/d/dmd/json.h b/gcc/d/dmd/json.h
index 1311fb3..979440c 100644
--- a/gcc/d/dmd/json.h
+++ b/gcc/d/dmd/json.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/json.h
  */
 
diff --git a/gcc/d/dmd/lambdacomp.d b/gcc/d/dmd/lambdacomp.d
index 336f8dd..91df9cc 100644
--- a/gcc/d/dmd/lambdacomp.d
+++ b/gcc/d/dmd/lambdacomp.d
@@ -5,9 +5,9 @@
  * The serialization is a string which contains the type of the parameters and the string
  * represantation of the lambda expression.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/lamdbacomp.d, _lambdacomp.d)
  * Documentation:  https://dlang.org/phobos/dmd_lambdacomp.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/lambdacomp.d
diff --git a/gcc/d/dmd/lexer.d b/gcc/d/dmd/lexer.d
index bb76a1a..e74b192 100644
--- a/gcc/d/dmd/lexer.d
+++ b/gcc/d/dmd/lexer.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/lex.html, Lexical)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/lexer.d, _lexer.d)
  * Documentation:  https://dlang.org/phobos/dmd_lexer.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/lexer.d
@@ -32,8 +32,8 @@ import dmd.common.outbuffer;
 import dmd.root.port;
 import dmd.root.rmem;
 import dmd.root.string;
+import dmd.root.utf;
 import dmd.tokens;
-import dmd.utf;
 import dmd.utils;
 
 nothrow:
diff --git a/gcc/d/dmd/mangle.h b/gcc/d/dmd/mangle.h
index 670cf4d..512184a 100644
--- a/gcc/d/dmd/mangle.h
+++ b/gcc/d/dmd/mangle.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/mangle.h
  */
 
diff --git a/gcc/d/dmd/module.h b/gcc/d/dmd/module.h
index fe4c73a..f020bfd 100644
--- a/gcc/d/dmd/module.h
+++ b/gcc/d/dmd/module.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/module.h
  */
 
diff --git a/gcc/d/dmd/mtype.d b/gcc/d/dmd/mtype.d
index e338a05..0257faa 100644
--- a/gcc/d/dmd/mtype.d
+++ b/gcc/d/dmd/mtype.d
@@ -1,9 +1,9 @@
 /**
  * Defines a D type.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/mtype.d, _mtype.d)
  * Documentation:  https://dlang.org/phobos/dmd_mtype.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/mtype.d
diff --git a/gcc/d/dmd/mtype.h b/gcc/d/dmd/mtype.h
index 430b39b..fde5027 100644
--- a/gcc/d/dmd/mtype.h
+++ b/gcc/d/dmd/mtype.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/mtype.h
  */
 
diff --git a/gcc/d/dmd/nogc.d b/gcc/d/dmd/nogc.d
index 8bdddb8..ed3f832 100644
--- a/gcc/d/dmd/nogc.d
+++ b/gcc/d/dmd/nogc.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/function.html#nogc-functions, No-GC Functions)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/nogc.d, _nogc.d)
  * Documentation:  https://dlang.org/phobos/dmd_nogc.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/nogc.d
diff --git a/gcc/d/dmd/nspace.d b/gcc/d/dmd/nspace.d
index 215f259..29f920a 100644
--- a/gcc/d/dmd/nspace.d
+++ b/gcc/d/dmd/nspace.d
@@ -36,9 +36,9 @@
  * are valid D identifier.
  *
  * See_Also:    https://github.com/dlang/dmd/pull/10031
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/nspace.d, _nspace.d)
  * Documentation:  https://dlang.org/phobos/dmd_nspace.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/nspace.d
diff --git a/gcc/d/dmd/nspace.h b/gcc/d/dmd/nspace.h
index 43d36e9..7d6f65d 100644
--- a/gcc/d/dmd/nspace.h
+++ b/gcc/d/dmd/nspace.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/nspace.h
  */
 
diff --git a/gcc/d/dmd/ob.d b/gcc/d/dmd/ob.d
index 156428e..c2594fe 100644
--- a/gcc/d/dmd/ob.d
+++ b/gcc/d/dmd/ob.d
@@ -1,9 +1,9 @@
 /**
  * Flow analysis for Ownership/Borrowing
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/ob.d, _ob.d)
  * Documentation:  https://dlang.org/phobos/dmd_escape.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/ob.d
diff --git a/gcc/d/dmd/objc.d b/gcc/d/dmd/objc.d
index 4236381..6d283e1 100644
--- a/gcc/d/dmd/objc.d
+++ b/gcc/d/dmd/objc.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/objc_interface.html, Interfacing to Objective-C)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/objc.d, _objc.d)
  * Documentation:  https://dlang.org/phobos/dmd_objc.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/objc.d
diff --git a/gcc/d/dmd/objc.h b/gcc/d/dmd/objc.h
index 483e501..a030154 100644
--- a/gcc/d/dmd/objc.h
+++ b/gcc/d/dmd/objc.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 2015-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 2015-2022 by The D Language Foundation, All Rights Reserved
  * written by Michel Fortin
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/objc.h
  */
 
diff --git a/gcc/d/dmd/opover.d b/gcc/d/dmd/opover.d
index bafeaa3..c932d043 100644
--- a/gcc/d/dmd/opover.d
+++ b/gcc/d/dmd/opover.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/operatoroverloading.html, Operator Overloading)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/opover.d, _opover.d)
  * Documentation:  https://dlang.org/phobos/dmd_opover.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/opover.d
diff --git a/gcc/d/dmd/optimize.d b/gcc/d/dmd/optimize.d
index ca9e0b3..5864fa2 100644
--- a/gcc/d/dmd/optimize.d
+++ b/gcc/d/dmd/optimize.d
@@ -1,9 +1,9 @@
 /**
  * Perform constant folding.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/optimize.d, _optimize.d)
  * Documentation:  https://dlang.org/phobos/dmd_optimize.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/optimize.d
diff --git a/gcc/d/dmd/parse.d b/gcc/d/dmd/parse.d
index 94056ab..700f3c5 100644
--- a/gcc/d/dmd/parse.d
+++ b/gcc/d/dmd/parse.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/grammar.html, D Grammar)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/parse.d, _parse.d)
  * Documentation:  https://dlang.org/phobos/dmd_parse.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/parse.d
@@ -6081,7 +6081,19 @@ LagainStc:
                 check(TOK.leftParenthesis);
                 param = parseAssignCondition();
                 condition = parseExpression();
-                check(TOK.rightParenthesis);
+                if (token.value != TOK.rightParenthesis && condition)
+                {
+                    error("missing closing `)` after `if (%s`", param ? "declaration".ptr : condition.toChars());
+                }
+                else
+                    check(TOK.rightParenthesis);
+                if (token.value == TOK.rightParenthesis)
+                {
+                    if (condition) // if not an error in condition
+                        error("extra `)` after `if (%s)`", param ? "declaration".ptr : condition.toChars());
+                    nextToken();
+                }
+
                 {
                     const lookingForElseSave = lookingForElse;
                     lookingForElse = loc;
diff --git a/gcc/d/dmd/printast.d b/gcc/d/dmd/printast.d
index 33b5e7f3..6133145 100644
--- a/gcc/d/dmd/printast.d
+++ b/gcc/d/dmd/printast.d
@@ -1,9 +1,9 @@
 /**
  * Provides an AST printer for debugging.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/printast.d, _printast.d)
  * Documentation:  https://dlang.org/phobos/dmd_printast.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/printast.d
diff --git a/gcc/d/dmd/root/README.md b/gcc/d/dmd/root/README.md
index e062d93..b393c12 100644
--- a/gcc/d/dmd/root/README.md
+++ b/gcc/d/dmd/root/README.md
@@ -5,7 +5,9 @@
 | [aav.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/aav.d)                 | An associative array implementation                                                        |
 | [array.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/array.d)             | A dynamic array implementation                                                             |
 | [bitarray.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/bitarray.d)       | A compact array of bits                                                                    |
+| [complex.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/complex.d)         | A complex number type                                                                      |
 | [ctfloat.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/ctfloat.d)         | A floating point type for compile-time calculations                                        |
+| [env.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/env.d)                 | Modify environment variables                                                               |
 | [file.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/file.d)               | Read a file from disk and store it in memory                                               |
 | [filename.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/filename.d)       | Encapsulate path and file names                                                            |
 | [hash.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/hash.d)               | Calculate a hash for a byte array                                                          |
@@ -19,4 +21,5 @@
 | [speller.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/speller.d)         | Try to detect typos in identifiers                                                         |
 | [string.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/string.d)           | Various string related functions                                                           |
 | [stringtable.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/stringtable.d) | Specialized associative array with string keys stored in a variable length structure       |
-| [strtold.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/strtold.d)         | D implementation of the standard C function `strtold` (String to long double)               |
+| [strtold.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/strtold.d)         | D implementation of the standard C function `strtold` (String to long double)              |
+| [utf.d](https://github.com/dlang/dmd/blob/master/src/dmd/root/utf.d)                 | Encoding/decoding Unicode text                                                             |
diff --git a/gcc/d/dmd/root/aav.d b/gcc/d/dmd/root/aav.d
index 92b58ba..5b8cc82 100644
--- a/gcc/d/dmd/root/aav.d
+++ b/gcc/d/dmd/root/aav.d
@@ -1,9 +1,9 @@
 /**
  * Associative array implementation.
  *
- * Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:   Walter Bright, http://www.digitalmars.com
- * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright: Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:   Walter Bright, https://www.digitalmars.com
+ * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/aav.d, root/_aav.d)
  * Documentation:  https://dlang.org/phobos/dmd_root_aav.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/aav.d
diff --git a/gcc/d/dmd/root/array.d b/gcc/d/dmd/root/array.d
index ed925c8..cd2d709 100644
--- a/gcc/d/dmd/root/array.d
+++ b/gcc/d/dmd/root/array.d
@@ -2,9 +2,9 @@
 /**
  * Dynamic array implementation.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/array.d, root/_array.d)
  * Documentation:  https://dlang.org/phobos/dmd_root_array.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/array.d
diff --git a/gcc/d/dmd/root/array.h b/gcc/d/dmd/root/array.h
index f573dca..866b952 100644
--- a/gcc/d/dmd/root/array.h
+++ b/gcc/d/dmd/root/array.h
@@ -1,8 +1,8 @@
-/* Copyright (C) 2011-2021 by The D Language Foundation, All Rights Reserved
+/* Copyright (C) 2011-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/root/array.h
  */
 
diff --git a/gcc/d/dmd/root/bitarray.d b/gcc/d/dmd/root/bitarray.d
index f912961..42c09fa 100644
--- a/gcc/d/dmd/root/bitarray.d
+++ b/gcc/d/dmd/root/bitarray.d
@@ -1,9 +1,9 @@
 /**
  * Implementation of a bit array.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/bitarray.d, root/_bitarray.d)
  * Documentation:  https://dlang.org/phobos/dmd_root_array.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/bitarray.d
diff --git a/gcc/d/dmd/root/bitarray.h b/gcc/d/dmd/root/bitarray.h
index e773711..c5c5d3a 100644
--- a/gcc/d/dmd/root/bitarray.h
+++ b/gcc/d/dmd/root/bitarray.h
@@ -1,8 +1,8 @@
-/* Copyright (C) 2011-2021 by The D Language Foundation, All Rights Reserved
+/* Copyright (C) 2011-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/root/bitarray.h
  */
 
diff --git a/gcc/d/dmd/root/complex.d b/gcc/d/dmd/root/complex.d
new file mode 100644
index 0000000..d9a396d
--- /dev/null
+++ b/gcc/d/dmd/root/complex.d
@@ -0,0 +1,112 @@
+/**
+ * Implements a complex number type.
+ *
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/complex.d, _complex.d)
+ * Documentation:  https://dlang.org/phobos/dmd_root_complex.html
+ * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/complex.d
+ */
+
+module dmd.root.complex;
+
+import dmd.root.ctfloat;
+
+extern (C++) struct complex_t
+{
+    real_t re;
+    real_t im;
+
+    this() @disable;
+
+    this(real_t re)
+    {
+        this(re, CTFloat.zero);
+    }
+
+    this(real_t re, real_t im)
+    {
+        this.re = re;
+        this.im = im;
+    }
+
+    extern (D) complex_t opBinary(string op)(complex_t y)
+        if (op == "+")
+    {
+        return complex_t(re + y.re, im + y.im);
+    }
+
+    extern (D) complex_t opBinary(string op)(complex_t y)
+        if (op == "-")
+    {
+        return complex_t(re - y.re, im - y.im);
+    }
+
+    extern (D) complex_t opUnary(string op)()
+        if (op == "-")
+    {
+        return complex_t(-re, -im);
+    }
+
+    extern (D) complex_t opBinary(string op)(complex_t y)
+        if (op == "*")
+    {
+        return complex_t(re * y.re - im * y.im, im * y.re + re * y.im);
+    }
+
+    extern (D) complex_t opBinaryRight(string op)(real_t x)
+        if (op == "*")
+    {
+        return complex_t(x) * this;
+    }
+
+    extern (D) complex_t opBinary(string op)(real_t y)
+        if (op == "*")
+    {
+        return this * complex_t(y);
+    }
+
+    extern (D) complex_t opBinary(string op)(real_t y)
+        if (op == "/")
+    {
+        return this / complex_t(y);
+    }
+
+    extern (D) complex_t opBinary(string op)(complex_t y)
+        if (op == "/")
+    {
+        if (CTFloat.fabs(y.re) < CTFloat.fabs(y.im))
+        {
+            const r = y.re / y.im;
+            const den = y.im + r * y.re;
+            return complex_t((re * r + im) / den, (im * r - re) / den);
+        }
+        else
+        {
+            const r = y.im / y.re;
+            const den = y.re + r * y.im;
+            return complex_t((re + r * im) / den, (im - r * re) / den);
+        }
+    }
+
+    extern (D) bool opCast(T : bool)() const
+    {
+        return re || im;
+    }
+
+    int opEquals(complex_t y) const
+    {
+        return re == y.re && im == y.im;
+    }
+}
+
+extern (C++) real_t creall(complex_t x)
+{
+    return x.re;
+}
+
+extern (C++) real_t cimagl(complex_t x)
+{
+    return x.im;
+}
diff --git a/gcc/d/dmd/root/complex_t.h b/gcc/d/dmd/root/complex_t.h
new file mode 100644
index 0000000..c384848
--- /dev/null
+++ b/gcc/d/dmd/root/complex_t.h
@@ -0,0 +1,71 @@
+
+/* Compiler implementation of the D programming language
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * written by Walter Bright
+ * https://www.digitalmars.com
+ * Distributed under the Boost Software License, Version 1.0.
+ * https://www.boost.org/LICENSE_1_0.txt
+ * https://github.com/dlang/dmd/blob/master/src/dmd/root/complex_t.h
+ */
+
+#pragma once
+
+#include "ctfloat.h"
+
+/* Roll our own complex type for compilers that don't support complex
+ */
+
+struct complex_t
+{
+    real_t re;
+    real_t im;
+
+    complex_t(real_t re) : re(re), im(CTFloat::zero) {}
+    complex_t(real_t re, real_t im) : re(re), im(im) {}
+
+    complex_t operator + (complex_t y) { return complex_t(re + y.re, im + y.im); }
+    complex_t operator - (complex_t y) { return complex_t(re - y.re, im - y.im); }
+    complex_t operator - () { return complex_t(-re, -im); }
+    complex_t operator * (complex_t y) { return complex_t(re * y.re - im * y.im, im * y.re + re * y.im); }
+
+    complex_t operator / (complex_t y)
+    {
+        if (CTFloat::fabs(y.re) < CTFloat::fabs(y.im))
+        {
+            real_t r = y.re / y.im;
+            real_t den = y.im + r * y.re;
+            return complex_t((re * r + im) / den,
+                             (im * r - re) / den);
+        }
+        else
+        {
+            real_t r = y.im / y.re;
+            real_t den = y.re + r * y.im;
+            return complex_t((re + r * im) / den,
+                             (im - r * re) / den);
+        }
+    }
+
+    operator bool () { return re || im; }
+
+    int operator == (complex_t y) { return re == y.re && im == y.im; }
+    int operator != (complex_t y) { return re != y.re || im != y.im; }
+
+private:
+    complex_t() : re(CTFloat::zero), im(CTFloat::zero) {}
+};
+
+inline complex_t operator * (real_t x, complex_t y) { return complex_t(x) * y; }
+inline complex_t operator * (complex_t x, real_t y) { return x * complex_t(y); }
+inline complex_t operator / (complex_t x, real_t y) { return x / complex_t(y); }
+
+
+inline real_t creall(complex_t x)
+{
+    return x.re;
+}
+
+inline real_t cimagl(complex_t x)
+{
+    return x.im;
+}
diff --git a/gcc/d/dmd/root/ctfloat.d b/gcc/d/dmd/root/ctfloat.d
index 9b98742..5ccc7bf 100644
--- a/gcc/d/dmd/root/ctfloat.d
+++ b/gcc/d/dmd/root/ctfloat.d
@@ -1,9 +1,9 @@
 /**
  * Collects functions for compile-time floating-point calculations.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/ctfloat.d, root/_ctfloat.d)
  * Documentation: https://dlang.org/phobos/dmd_root_ctfloat.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/ctfloat.d
diff --git a/gcc/d/dmd/root/ctfloat.h b/gcc/d/dmd/root/ctfloat.h
index 1221b82..6b83dbf 100644
--- a/gcc/d/dmd/root/ctfloat.h
+++ b/gcc/d/dmd/root/ctfloat.h
@@ -1,9 +1,9 @@
 
-/* Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+/* Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/root/ctfloat.h
  */
 
diff --git a/gcc/d/dmd/root/dcompat.h b/gcc/d/dmd/root/dcompat.h
index 8b0bcf2..5823e7c 100644
--- a/gcc/d/dmd/root/dcompat.h
+++ b/gcc/d/dmd/root/dcompat.h
@@ -1,9 +1,9 @@
 
-/* Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+/* Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/root/dcompat.h
  */
 
diff --git a/gcc/d/dmd/root/file.d b/gcc/d/dmd/root/file.d
index 2722529..6331a62 100644
--- a/gcc/d/dmd/root/file.d
+++ b/gcc/d/dmd/root/file.d
@@ -1,9 +1,9 @@
 /**
  * Read a file from disk and store it in memory.
  *
- * Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:   Walter Bright, http://www.digitalmars.com
- * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright: Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:   Walter Bright, https://www.digitalmars.com
+ * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/file.d, root/_file.d)
  * Documentation:  https://dlang.org/phobos/dmd_root_file.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/file.d
diff --git a/gcc/d/dmd/root/file.h b/gcc/d/dmd/root/file.h
index ee0d51e..44ca024 100644
--- a/gcc/d/dmd/root/file.h
+++ b/gcc/d/dmd/root/file.h
@@ -1,9 +1,9 @@
 
-/* Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+/* Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/root/file.h
  */
 
diff --git a/gcc/d/dmd/root/filename.d b/gcc/d/dmd/root/filename.d
index d1500c8..292fccf 100644
--- a/gcc/d/dmd/root/filename.d
+++ b/gcc/d/dmd/root/filename.d
@@ -1,9 +1,9 @@
 /**
  * Encapsulate path and file names.
  *
- * Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:   Walter Bright, http://www.digitalmars.com
- * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright: Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:   Walter Bright, https://www.digitalmars.com
+ * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/filename.d, root/_filename.d)
  * Documentation:  https://dlang.org/phobos/dmd_root_filename.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/filename.d
diff --git a/gcc/d/dmd/root/filename.h b/gcc/d/dmd/root/filename.h
index 9f773b5..419a4c9 100644
--- a/gcc/d/dmd/root/filename.h
+++ b/gcc/d/dmd/root/filename.h
@@ -1,9 +1,9 @@
 
-/* Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+/* Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/root/filename.h
  */
 
diff --git a/gcc/d/dmd/root/hash.d b/gcc/d/dmd/root/hash.d
index f484819..fe97c42 100644
--- a/gcc/d/dmd/root/hash.d
+++ b/gcc/d/dmd/root/hash.d
@@ -1,9 +1,9 @@
 /**
  * Hash functions for arbitrary binary data.
  *
- * Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:   Martin Nowak, Walter Bright, http://www.digitalmars.com
- * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright: Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:   Martin Nowak, Walter Bright, https://www.digitalmars.com
+ * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/hash.d, root/_hash.d)
  * Documentation:  https://dlang.org/phobos/dmd_root_hash.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/hash.d
diff --git a/gcc/d/dmd/root/object.h b/gcc/d/dmd/root/object.h
index fb367bc..609e763 100644
--- a/gcc/d/dmd/root/object.h
+++ b/gcc/d/dmd/root/object.h
@@ -1,9 +1,9 @@
 
-/* Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+/* Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/root/object.h
  */
 
diff --git a/gcc/d/dmd/root/optional.d b/gcc/d/dmd/root/optional.d
index a593ddd..bb8150f 100644
--- a/gcc/d/dmd/root/optional.d
+++ b/gcc/d/dmd/root/optional.d
@@ -1,9 +1,9 @@
 /**
  * Optional implementation.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/optional.d, root/_optional.d)
  * Documentation:  https://dlang.org/phobos/dmd_root_optional.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/optional.d
diff --git a/gcc/d/dmd/root/optional.h b/gcc/d/dmd/root/optional.h
index fa52b58..e4a41a0 100644
--- a/gcc/d/dmd/root/optional.h
+++ b/gcc/d/dmd/root/optional.h
@@ -3,9 +3,9 @@
 /**
  * Optional implementation.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/optional.h, root/_optional.h)
  * Documentation:  https://dlang.org/phobos/dmd_root_optional.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/optional.h
diff --git a/gcc/d/dmd/root/port.d b/gcc/d/dmd/root/port.d
index 1bafa20..0c8088c 100644
--- a/gcc/d/dmd/root/port.d
+++ b/gcc/d/dmd/root/port.d
@@ -1,9 +1,9 @@
 /**
  * Portable routines for functions that have different implementations on different platforms.
  *
- * Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:   Walter Bright, http://www.digitalmars.com
- * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright: Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:   Walter Bright, https://www.digitalmars.com
+ * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/port.d, root/_port.d)
  * Documentation:  https://dlang.org/phobos/dmd_root_port.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/port.d
diff --git a/gcc/d/dmd/root/port.h b/gcc/d/dmd/root/port.h
index 08cf66c..069a365 100644
--- a/gcc/d/dmd/root/port.h
+++ b/gcc/d/dmd/root/port.h
@@ -1,9 +1,9 @@
 
-/* Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+/* Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/root/port.h
  */
 
diff --git a/gcc/d/dmd/root/region.d b/gcc/d/dmd/root/region.d
index 50689fe..1e86f32 100644
--- a/gcc/d/dmd/root/region.d
+++ b/gcc/d/dmd/root/region.d
@@ -1,9 +1,9 @@
 /**
  * Region storage allocator implementation.
  *
- * Copyright:   Copyright (C) 2019-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 2019-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/region.d, root/_region.d)
  * Documentation:  https://dlang.org/phobos/dmd_root_region.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/region.d
diff --git a/gcc/d/dmd/root/rmem.d b/gcc/d/dmd/root/rmem.d
index 198f3d0..ffe5ee1 100644
--- a/gcc/d/dmd/root/rmem.d
+++ b/gcc/d/dmd/root/rmem.d
@@ -1,9 +1,9 @@
 /**
  * Allocate memory using `malloc` or the GC depending on the configuration.
  *
- * Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:   Walter Bright, http://www.digitalmars.com
- * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright: Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:   Walter Bright, https://www.digitalmars.com
+ * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/rmem.d, root/_rmem.d)
  * Documentation:  https://dlang.org/phobos/dmd_root_rmem.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/rmem.d
diff --git a/gcc/d/dmd/root/rmem.h b/gcc/d/dmd/root/rmem.h
index 04d9e3f..1338d7c 100644
--- a/gcc/d/dmd/root/rmem.h
+++ b/gcc/d/dmd/root/rmem.h
@@ -1,9 +1,9 @@
 
-/* Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+/* Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/root/rmem.h
  */
 
diff --git a/gcc/d/dmd/root/rootobject.d b/gcc/d/dmd/root/rootobject.d
index 64104b8..7390d07 100644
--- a/gcc/d/dmd/root/rootobject.d
+++ b/gcc/d/dmd/root/rootobject.d
@@ -1,9 +1,9 @@
 /**
  * Provide the root object that classes in dmd inherit from.
  *
- * Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:   Walter Bright, http://www.digitalmars.com
- * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright: Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:   Walter Bright, https://www.digitalmars.com
+ * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/rootobject.d, root/_rootobject.d)
  * Documentation:  https://dlang.org/phobos/dmd_root_rootobject.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/rootobject.d
diff --git a/gcc/d/dmd/root/speller.d b/gcc/d/dmd/root/speller.d
index 543005b..b3e59f5 100644
--- a/gcc/d/dmd/root/speller.d
+++ b/gcc/d/dmd/root/speller.d
@@ -3,9 +3,9 @@
  *
  * Does not have any dependencies on the rest of DMD.
  *
- * Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:   Walter Bright, http://www.digitalmars.com
- * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright: Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:   Walter Bright, https://www.digitalmars.com
+ * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/speller.d, root/_speller.d)
  * Documentation:  https://dlang.org/phobos/dmd_root_speller.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/speller.d
diff --git a/gcc/d/dmd/root/string.d b/gcc/d/dmd/root/string.d
index 73fe562..0c7cad0 100644
--- a/gcc/d/dmd/root/string.d
+++ b/gcc/d/dmd/root/string.d
@@ -1,9 +1,9 @@
 /**
  * Contains various string related functions.
  *
- * Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:   Walter Bright, http://www.digitalmars.com
- * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright: Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:   Walter Bright, https://www.digitalmars.com
+ * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/string.d, root/_string.d)
  * Documentation:  https://dlang.org/phobos/dmd_root_string.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/string.d
diff --git a/gcc/d/dmd/root/stringtable.d b/gcc/d/dmd/root/stringtable.d
index 42b26e2..884a9f1 100644
--- a/gcc/d/dmd/root/stringtable.d
+++ b/gcc/d/dmd/root/stringtable.d
@@ -1,9 +1,9 @@
 /**
  * A specialized associative array with string keys stored in a variable length structure.
  *
- * Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:   Walter Bright, http://www.digitalmars.com
- * License:   $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright: Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:   Walter Bright, https://www.digitalmars.com
+ * License:   $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:    $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/stringtable.d, root/_stringtable.d)
  * Documentation:  https://dlang.org/phobos/dmd_root_stringtable.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/stringtable.d
@@ -284,7 +284,7 @@ private:
     size_t findSlot(hash_t hash, scope const(char)[] str) const @nogc nothrow pure
     {
         // quadratic probing using triangular numbers
-        // http://stackoverflow.com/questions/2348187/moving-from-linear-probing-to-quadratic-probing-hash-collisons/2349774#2349774
+        // https://stackoverflow.com/questions/2348187/moving-from-linear-probing-to-quadratic-probing-hash-collisons/2349774#2349774
         for (size_t i = hash & (table.length - 1), j = 1;; ++j)
         {
             const(StringValue!T)* sv;
diff --git a/gcc/d/dmd/root/utf.d b/gcc/d/dmd/root/utf.d
new file mode 100644
index 0000000..15838e9
--- /dev/null
+++ b/gcc/d/dmd/root/utf.d
@@ -0,0 +1,561 @@
+/**
+ * Functions related to UTF encoding.
+ *
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/utf.d, _utf.d)
+ * Documentation:  https://dlang.org/phobos/dmd_root_utf.html
+ * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/utf.d
+ */
+
+module dmd.root.utf;
+
+nothrow pure @nogc:
+
+/// The Unicode code space is the range of code points [0x000000,0x10FFFF]
+/// except the UTF-16 surrogate pairs in the range [0xD800,0xDFFF]
+bool utf_isValidDchar(dchar c)
+{
+    // TODO: Whether non-char code points should be rejected is pending review.
+    // 0xFFFE and 0xFFFF are valid for internal use, like Phobos std.utf.isValidDChar
+    // See also https://issues.dlang.org/show_bug.cgi?id=1357
+    if (c < 0xD800) // Almost all characters in a typical document.
+        return true;
+    if (c > 0xDFFF && c <= 0x10FFFF)
+        return true;
+    return false;
+}
+
+/*******************************
+ * Return !=0 if unicode alpha.
+ * Use table from C99 Appendix D.
+ */
+bool isUniAlpha(dchar c)
+{
+    static immutable wchar[2][] ALPHA_TABLE =
+    [
+        [0x00AA, 0x00AA],
+        [0x00B5, 0x00B5],
+        [0x00B7, 0x00B7],
+        [0x00BA, 0x00BA],
+        [0x00C0, 0x00D6],
+        [0x00D8, 0x00F6],
+        [0x00F8, 0x01F5],
+        [0x01FA, 0x0217],
+        [0x0250, 0x02A8],
+        [0x02B0, 0x02B8],
+        [0x02BB, 0x02BB],
+        [0x02BD, 0x02C1],
+        [0x02D0, 0x02D1],
+        [0x02E0, 0x02E4],
+        [0x037A, 0x037A],
+        [0x0386, 0x0386],
+        [0x0388, 0x038A],
+        [0x038C, 0x038C],
+        [0x038E, 0x03A1],
+        [0x03A3, 0x03CE],
+        [0x03D0, 0x03D6],
+        [0x03DA, 0x03DA],
+        [0x03DC, 0x03DC],
+        [0x03DE, 0x03DE],
+        [0x03E0, 0x03E0],
+        [0x03E2, 0x03F3],
+        [0x0401, 0x040C],
+        [0x040E, 0x044F],
+        [0x0451, 0x045C],
+        [0x045E, 0x0481],
+        [0x0490, 0x04C4],
+        [0x04C7, 0x04C8],
+        [0x04CB, 0x04CC],
+        [0x04D0, 0x04EB],
+        [0x04EE, 0x04F5],
+        [0x04F8, 0x04F9],
+        [0x0531, 0x0556],
+        [0x0559, 0x0559],
+        [0x0561, 0x0587],
+        [0x05B0, 0x05B9],
+        [0x05BB, 0x05BD],
+        [0x05BF, 0x05BF],
+        [0x05C1, 0x05C2],
+        [0x05D0, 0x05EA],
+        [0x05F0, 0x05F2],
+        [0x0621, 0x063A],
+        [0x0640, 0x0652],
+        [0x0660, 0x0669],
+        [0x0670, 0x06B7],
+        [0x06BA, 0x06BE],
+        [0x06C0, 0x06CE],
+        [0x06D0, 0x06DC],
+        [0x06E5, 0x06E8],
+        [0x06EA, 0x06ED],
+        [0x06F0, 0x06F9],
+        [0x0901, 0x0903],
+        [0x0905, 0x0939],
+        [0x093D, 0x094D],
+        [0x0950, 0x0952],
+        [0x0958, 0x0963],
+        [0x0966, 0x096F],
+        [0x0981, 0x0983],
+        [0x0985, 0x098C],
+        [0x098F, 0x0990],
+        [0x0993, 0x09A8],
+        [0x09AA, 0x09B0],
+        [0x09B2, 0x09B2],
+        [0x09B6, 0x09B9],
+        [0x09BE, 0x09C4],
+        [0x09C7, 0x09C8],
+        [0x09CB, 0x09CD],
+        [0x09DC, 0x09DD],
+        [0x09DF, 0x09E3],
+        [0x09E6, 0x09F1],
+        [0x0A02, 0x0A02],
+        [0x0A05, 0x0A0A],
+        [0x0A0F, 0x0A10],
+        [0x0A13, 0x0A28],
+        [0x0A2A, 0x0A30],
+        [0x0A32, 0x0A33],
+        [0x0A35, 0x0A36],
+        [0x0A38, 0x0A39],
+        [0x0A3E, 0x0A42],
+        [0x0A47, 0x0A48],
+        [0x0A4B, 0x0A4D],
+        [0x0A59, 0x0A5C],
+        [0x0A5E, 0x0A5E],
+        [0x0A66, 0x0A6F],
+        [0x0A74, 0x0A74],
+        [0x0A81, 0x0A83],
+        [0x0A85, 0x0A8B],
+        [0x0A8D, 0x0A8D],
+        [0x0A8F, 0x0A91],
+        [0x0A93, 0x0AA8],
+        [0x0AAA, 0x0AB0],
+        [0x0AB2, 0x0AB3],
+        [0x0AB5, 0x0AB9],
+        [0x0ABD, 0x0AC5],
+        [0x0AC7, 0x0AC9],
+        [0x0ACB, 0x0ACD],
+        [0x0AD0, 0x0AD0],
+        [0x0AE0, 0x0AE0],
+        [0x0AE6, 0x0AEF],
+        [0x0B01, 0x0B03],
+        [0x0B05, 0x0B0C],
+        [0x0B0F, 0x0B10],
+        [0x0B13, 0x0B28],
+        [0x0B2A, 0x0B30],
+        [0x0B32, 0x0B33],
+        [0x0B36, 0x0B39],
+        [0x0B3D, 0x0B43],
+        [0x0B47, 0x0B48],
+        [0x0B4B, 0x0B4D],
+        [0x0B5C, 0x0B5D],
+        [0x0B5F, 0x0B61],
+        [0x0B66, 0x0B6F],
+        [0x0B82, 0x0B83],
+        [0x0B85, 0x0B8A],
+        [0x0B8E, 0x0B90],
+        [0x0B92, 0x0B95],
+        [0x0B99, 0x0B9A],
+        [0x0B9C, 0x0B9C],
+        [0x0B9E, 0x0B9F],
+        [0x0BA3, 0x0BA4],
+        [0x0BA8, 0x0BAA],
+        [0x0BAE, 0x0BB5],
+        [0x0BB7, 0x0BB9],
+        [0x0BBE, 0x0BC2],
+        [0x0BC6, 0x0BC8],
+        [0x0BCA, 0x0BCD],
+        [0x0BE7, 0x0BEF],
+        [0x0C01, 0x0C03],
+        [0x0C05, 0x0C0C],
+        [0x0C0E, 0x0C10],
+        [0x0C12, 0x0C28],
+        [0x0C2A, 0x0C33],
+        [0x0C35, 0x0C39],
+        [0x0C3E, 0x0C44],
+        [0x0C46, 0x0C48],
+        [0x0C4A, 0x0C4D],
+        [0x0C60, 0x0C61],
+        [0x0C66, 0x0C6F],
+        [0x0C82, 0x0C83],
+        [0x0C85, 0x0C8C],
+        [0x0C8E, 0x0C90],
+        [0x0C92, 0x0CA8],
+        [0x0CAA, 0x0CB3],
+        [0x0CB5, 0x0CB9],
+        [0x0CBE, 0x0CC4],
+        [0x0CC6, 0x0CC8],
+        [0x0CCA, 0x0CCD],
+        [0x0CDE, 0x0CDE],
+        [0x0CE0, 0x0CE1],
+        [0x0CE6, 0x0CEF],
+        [0x0D02, 0x0D03],
+        [0x0D05, 0x0D0C],
+        [0x0D0E, 0x0D10],
+        [0x0D12, 0x0D28],
+        [0x0D2A, 0x0D39],
+        [0x0D3E, 0x0D43],
+        [0x0D46, 0x0D48],
+        [0x0D4A, 0x0D4D],
+        [0x0D60, 0x0D61],
+        [0x0D66, 0x0D6F],
+        [0x0E01, 0x0E3A],
+        [0x0E40, 0x0E5B],
+        [0x0E81, 0x0E82],
+        [0x0E84, 0x0E84],
+        [0x0E87, 0x0E88],
+        [0x0E8A, 0x0E8A],
+        [0x0E8D, 0x0E8D],
+        [0x0E94, 0x0E97],
+        [0x0E99, 0x0E9F],
+        [0x0EA1, 0x0EA3],
+        [0x0EA5, 0x0EA5],
+        [0x0EA7, 0x0EA7],
+        [0x0EAA, 0x0EAB],
+        [0x0EAD, 0x0EAE],
+        [0x0EB0, 0x0EB9],
+        [0x0EBB, 0x0EBD],
+        [0x0EC0, 0x0EC4],
+        [0x0EC6, 0x0EC6],
+        [0x0EC8, 0x0ECD],
+        [0x0ED0, 0x0ED9],
+        [0x0EDC, 0x0EDD],
+        [0x0F00, 0x0F00],
+        [0x0F18, 0x0F19],
+        [0x0F20, 0x0F33],
+        [0x0F35, 0x0F35],
+        [0x0F37, 0x0F37],
+        [0x0F39, 0x0F39],
+        [0x0F3E, 0x0F47],
+        [0x0F49, 0x0F69],
+        [0x0F71, 0x0F84],
+        [0x0F86, 0x0F8B],
+        [0x0F90, 0x0F95],
+        [0x0F97, 0x0F97],
+        [0x0F99, 0x0FAD],
+        [0x0FB1, 0x0FB7],
+        [0x0FB9, 0x0FB9],
+        [0x10A0, 0x10C5],
+        [0x10D0, 0x10F6],
+        [0x1E00, 0x1E9B],
+        [0x1EA0, 0x1EF9],
+        [0x1F00, 0x1F15],
+        [0x1F18, 0x1F1D],
+        [0x1F20, 0x1F45],
+        [0x1F48, 0x1F4D],
+        [0x1F50, 0x1F57],
+        [0x1F59, 0x1F59],
+        [0x1F5B, 0x1F5B],
+        [0x1F5D, 0x1F5D],
+        [0x1F5F, 0x1F7D],
+        [0x1F80, 0x1FB4],
+        [0x1FB6, 0x1FBC],
+        [0x1FBE, 0x1FBE],
+        [0x1FC2, 0x1FC4],
+        [0x1FC6, 0x1FCC],
+        [0x1FD0, 0x1FD3],
+        [0x1FD6, 0x1FDB],
+        [0x1FE0, 0x1FEC],
+        [0x1FF2, 0x1FF4],
+        [0x1FF6, 0x1FFC],
+        [0x203F, 0x2040],
+        [0x207F, 0x207F],
+        [0x2102, 0x2102],
+        [0x2107, 0x2107],
+        [0x210A, 0x2113],
+        [0x2115, 0x2115],
+        [0x2118, 0x211D],
+        [0x2124, 0x2124],
+        [0x2126, 0x2126],
+        [0x2128, 0x2128],
+        [0x212A, 0x2131],
+        [0x2133, 0x2138],
+        [0x2160, 0x2182],
+        [0x3005, 0x3007],
+        [0x3021, 0x3029],
+        [0x3041, 0x3093],
+        [0x309B, 0x309C],
+        [0x30A1, 0x30F6],
+        [0x30FB, 0x30FC],
+        [0x3105, 0x312C],
+        [0x4E00, 0x9FA5],
+        [0xAC00, 0xD7A3]
+    ];
+
+    size_t high = ALPHA_TABLE.length - 1;
+    // Shortcut search if c is out of range
+    size_t low = (c < ALPHA_TABLE[0][0] || ALPHA_TABLE[high][1] < c) ? high + 1 : 0;
+    // Binary search
+    while (low <= high)
+    {
+        size_t mid = (low + high) >> 1;
+        if (c < ALPHA_TABLE[mid][0])
+            high = mid - 1;
+        else if (ALPHA_TABLE[mid][1] < c)
+            low = mid + 1;
+        else
+        {
+            assert(ALPHA_TABLE[mid][0] <= c && c <= ALPHA_TABLE[mid][1]);
+            return true;
+        }
+    }
+    return false;
+}
+
+/**
+ * Returns the code length of c in code units.
+ */
+int utf_codeLengthChar(dchar c)
+{
+    if (c <= 0x7F)
+        return 1;
+    if (c <= 0x7FF)
+        return 2;
+    if (c <= 0xFFFF)
+        return 3;
+    if (c <= 0x10FFFF)
+        return 4;
+    assert(false);
+}
+
+int utf_codeLengthWchar(dchar c)
+{
+    return c <= 0xFFFF ? 1 : 2;
+}
+
+/**
+ * Returns the code length of c in code units for the encoding.
+ * sz is the encoding: 1 = utf8, 2 = utf16, 4 = utf32.
+ */
+int utf_codeLength(int sz, dchar c)
+{
+    if (sz == 1)
+        return utf_codeLengthChar(c);
+    if (sz == 2)
+        return utf_codeLengthWchar(c);
+    assert(sz == 4);
+    return 1;
+}
+
+void utf_encodeChar(char* s, dchar c)
+{
+    assert(s !is null);
+    assert(utf_isValidDchar(c));
+    if (c <= 0x7F)
+    {
+        s[0] = cast(char)c;
+    }
+    else if (c <= 0x07FF)
+    {
+        s[0] = cast(char)(0xC0 | (c >> 6));
+        s[1] = cast(char)(0x80 | (c & 0x3F));
+    }
+    else if (c <= 0xFFFF)
+    {
+        s[0] = cast(char)(0xE0 | (c >> 12));
+        s[1] = cast(char)(0x80 | ((c >> 6) & 0x3F));
+        s[2] = cast(char)(0x80 | (c & 0x3F));
+    }
+    else if (c <= 0x10FFFF)
+    {
+        s[0] = cast(char)(0xF0 | (c >> 18));
+        s[1] = cast(char)(0x80 | ((c >> 12) & 0x3F));
+        s[2] = cast(char)(0x80 | ((c >> 6) & 0x3F));
+        s[3] = cast(char)(0x80 | (c & 0x3F));
+    }
+    else
+        assert(0);
+}
+
+void utf_encodeWchar(wchar* s, dchar c)
+{
+    assert(s !is null);
+    assert(utf_isValidDchar(c));
+    if (c <= 0xFFFF)
+    {
+        s[0] = cast(wchar)c;
+    }
+    else
+    {
+        s[0] = cast(wchar)((((c - 0x010000) >> 10) & 0x03FF) + 0xD800);
+        s[1] = cast(wchar)(((c - 0x010000) & 0x03FF) + 0xDC00);
+    }
+}
+
+void utf_encode(int sz, void* s, dchar c)
+{
+    if (sz == 1)
+        utf_encodeChar(cast(char*)s, c);
+    else if (sz == 2)
+        utf_encodeWchar(cast(wchar*)s, c);
+    else
+    {
+        assert(sz == 4);
+        *(cast(dchar*)s) = c;
+    }
+}
+
+/********************************************
+ * Decode a UTF-8 sequence as a single UTF-32 code point.
+ * Params:
+ *      s = UTF-8 sequence
+ *      ridx = starting index in s[], updated to reflect number of code units decoded
+ *      rresult = set to character decoded
+ * Returns:
+ *      null on success, otherwise error message string
+ */
+string utf_decodeChar(const(char)[] s, ref size_t ridx, out dchar rresult)
+{
+    // UTF-8 decoding errors
+    static immutable string UTF8_DECODE_OK = null; // no error
+    static immutable string UTF8_DECODE_OUTSIDE_CODE_SPACE = "Outside Unicode code space";
+    static immutable string UTF8_DECODE_TRUNCATED_SEQUENCE = "Truncated UTF-8 sequence";
+    static immutable string UTF8_DECODE_OVERLONG = "Overlong UTF-8 sequence";
+    static immutable string UTF8_DECODE_INVALID_TRAILER = "Invalid trailing code unit";
+    static immutable string UTF8_DECODE_INVALID_CODE_POINT = "Invalid code point decoded";
+
+    /* The following encodings are valid, except for the 5 and 6 byte
+     * combinations:
+     *      0xxxxxxx
+     *      110xxxxx 10xxxxxx
+     *      1110xxxx 10xxxxxx 10xxxxxx
+     *      11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
+     *      111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
+     *      1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
+     */
+    static immutable ubyte[256] UTF8_STRIDE =
+    [
+        1,1,1,1, 1,1,1,1,
+        1,1,1,1, 1,1,1,1,
+        1,1,1,1, 1,1,1,1,
+        1,1,1,1, 1,1,1,1,
+        1,1,1,1, 1,1,1,1,
+        1,1,1,1, 1,1,1,1,
+        1,1,1,1, 1,1,1,1,
+        1,1,1,1, 1,1,1,1,
+
+        1,1,1,1, 1,1,1,1,
+        1,1,1,1, 1,1,1,1,
+        1,1,1,1, 1,1,1,1,
+        1,1,1,1, 1,1,1,1,
+        1,1,1,1, 1,1,1,1,
+        1,1,1,1, 1,1,1,1,
+        1,1,1,1, 1,1,1,1,
+        1,1,1,1, 1,1,1,1,
+
+        0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF,
+        0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF,
+        0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF,
+        0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF,
+        0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF,
+        0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF,
+        0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF,
+        0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF,
+
+        2,2,2,2, 2,2,2,2,
+        2,2,2,2, 2,2,2,2,
+        2,2,2,2, 2,2,2,2,
+        2,2,2,2, 2,2,2,2,
+
+        3,3,3,3, 3,3,3,3,
+        3,3,3,3, 3,3,3,3,
+
+        4,4,4,4, 4,4,4,4,
+        5,5,5,5, 6,6,0xFF,0xFF
+    ];
+
+    assert(s !is null);
+    size_t i = ridx++;
+
+    const char u = s[i];
+    // Pre-stage results for ASCII and error cases
+    rresult = u;
+    //printf("utf_decodeChar(s = %02x, %02x, %02x len = %d)\n", u, s[1], s[2], len);
+    // Get expected sequence length
+    const size_t n = UTF8_STRIDE[u];
+    switch (n)
+    {
+    case 1:
+        // ASCII
+        return UTF8_DECODE_OK;
+    case 2:
+    case 3:
+    case 4:
+        // multi-byte UTF-8
+        break;
+    default:
+        // 5- or 6-byte sequence
+        return UTF8_DECODE_OUTSIDE_CODE_SPACE;
+    }
+    if (s.length < i + n) // source too short
+        return UTF8_DECODE_TRUNCATED_SEQUENCE;
+    // Pick off 7 - n low bits from first code unit
+    dchar c = u & ((1 << (7 - n)) - 1);
+    /* The following combinations are overlong, and illegal:
+     *      1100000x (10xxxxxx)
+     *      11100000 100xxxxx (10xxxxxx)
+     *      11110000 1000xxxx (10xxxxxx 10xxxxxx)
+     *      11111000 10000xxx (10xxxxxx 10xxxxxx 10xxxxxx)
+     *      11111100 100000xx (10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx)
+     */
+    const char u2 = s[++i];
+    // overlong combination
+    if ((u & 0xFE) == 0xC0 || (u == 0xE0 && (u2 & 0xE0) == 0x80) || (u == 0xF0 && (u2 & 0xF0) == 0x80) || (u == 0xF8 && (u2 & 0xF8) == 0x80) || (u == 0xFC && (u2 & 0xFC) == 0x80))
+        return UTF8_DECODE_OVERLONG;
+    // Decode remaining bits
+    for (const m = n + i - 1; i != m; ++i)
+    {
+        const u3 = s[i];
+        if ((u3 & 0xC0) != 0x80) // trailing bytes are 10xxxxxx
+            return UTF8_DECODE_INVALID_TRAILER;
+        c = (c << 6) | (u3 & 0x3F);
+    }
+    if (!utf_isValidDchar(c))
+        return UTF8_DECODE_INVALID_CODE_POINT;
+    ridx = i;
+    rresult = c;
+    return UTF8_DECODE_OK;
+}
+
+/********************************************
+ * Decode a UTF-16 sequence as a single UTF-32 code point.
+ * Params:
+ *      s = UTF-16 sequence
+ *      ridx = starting index in s[], updated to reflect number of code units decoded
+ *      rresult = set to character decoded
+ * Returns:
+ *      null on success, otherwise error message string
+ */
+string utf_decodeWchar(const(wchar)[] s, ref size_t ridx, out dchar rresult)
+{
+    // UTF-16 decoding errors
+    static immutable string UTF16_DECODE_OK = null; // no error
+    static immutable string UTF16_DECODE_TRUNCATED_SEQUENCE = "Truncated UTF-16 sequence";
+    static immutable string UTF16_DECODE_INVALID_SURROGATE = "Invalid low surrogate";
+    static immutable string UTF16_DECODE_UNPAIRED_SURROGATE = "Unpaired surrogate";
+    static immutable string UTF16_DECODE_INVALID_CODE_POINT = "Invalid code point decoded";
+
+    assert(s !is null);
+    size_t i = ridx++;
+
+    // Pre-stage results for single wchar and error cases
+    dchar u = rresult = s[i];
+    if (u < 0xD800) // Single wchar codepoint
+        return UTF16_DECODE_OK;
+    if (0xD800 <= u && u <= 0xDBFF) // Surrogate pair
+    {
+        if (s.length <= i + 1)
+            return UTF16_DECODE_TRUNCATED_SEQUENCE;
+        wchar u2 = s[i + 1];
+        if (u2 < 0xDC00 || 0xDFFF < u)
+            return UTF16_DECODE_INVALID_SURROGATE;
+        u = ((u - 0xD7C0) << 10) + (u2 - 0xDC00);
+        ++ridx;
+    }
+    else if (0xDC00 <= u && u <= 0xDFFF)
+        return UTF16_DECODE_UNPAIRED_SURROGATE;
+    if (!utf_isValidDchar(u))
+        return UTF16_DECODE_INVALID_CODE_POINT;
+    rresult = u;
+    return UTF16_DECODE_OK;
+}
diff --git a/gcc/d/dmd/safe.d b/gcc/d/dmd/safe.d
index 7eb3e23..bad071e 100644
--- a/gcc/d/dmd/safe.d
+++ b/gcc/d/dmd/safe.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/function.html#function-safety, Function Safety)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/safe.d, _safe.d)
  * Documentation:  https://dlang.org/phobos/dmd_safe.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/safe.d
diff --git a/gcc/d/dmd/sapply.d b/gcc/d/dmd/sapply.d
index 018b046..7314d5b 100644
--- a/gcc/d/dmd/sapply.d
+++ b/gcc/d/dmd/sapply.d
@@ -1,9 +1,9 @@
 /**
  * Provides a depth-first statement visitor.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/sparse.d, _sparse.d)
  * Documentation:  https://dlang.org/phobos/dmd_sapply.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/sapply.d
diff --git a/gcc/d/dmd/scope.h b/gcc/d/dmd/scope.h
index 4d8c0bb..a163e75 100644
--- a/gcc/d/dmd/scope.h
+++ b/gcc/d/dmd/scope.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/scope.h
  */
 
diff --git a/gcc/d/dmd/semantic2.d b/gcc/d/dmd/semantic2.d
index c3fe752..f36cdc9 100644
--- a/gcc/d/dmd/semantic2.d
+++ b/gcc/d/dmd/semantic2.d
@@ -1,9 +1,9 @@
 /**
  * Performs the semantic2 stage, which deals with initializer expressions.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/semantic2.d, _semantic2.d)
  * Documentation:  https://dlang.org/phobos/dmd_semantic2.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/semantic2.d
@@ -56,11 +56,11 @@ import dmd.root.filename;
 import dmd.common.outbuffer;
 import dmd.root.rmem;
 import dmd.root.rootobject;
+import dmd.root.utf;
 import dmd.sideeffect;
 import dmd.statementsem;
 import dmd.staticassert;
 import dmd.tokens;
-import dmd.utf;
 import dmd.statement;
 import dmd.target;
 import dmd.templateparamsem;
diff --git a/gcc/d/dmd/semantic3.d b/gcc/d/dmd/semantic3.d
index 49b87d6..7bcb7ec 100644
--- a/gcc/d/dmd/semantic3.d
+++ b/gcc/d/dmd/semantic3.d
@@ -1,9 +1,9 @@
 /**
  * Performs the semantic3 stage, which deals with function bodies.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/semantic3.d, _semantic3.d)
  * Documentation:  https://dlang.org/phobos/dmd_semantic3.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/semantic3.d
@@ -58,11 +58,11 @@ import dmd.root.filename;
 import dmd.common.outbuffer;
 import dmd.root.rmem;
 import dmd.root.rootobject;
+import dmd.root.utf;
 import dmd.sideeffect;
 import dmd.statementsem;
 import dmd.staticassert;
 import dmd.tokens;
-import dmd.utf;
 import dmd.semantic2;
 import dmd.statement;
 import dmd.target;
diff --git a/gcc/d/dmd/sideeffect.d b/gcc/d/dmd/sideeffect.d
index 99833b5..d365049 100644
--- a/gcc/d/dmd/sideeffect.d
+++ b/gcc/d/dmd/sideeffect.d
@@ -1,9 +1,9 @@
 /**
  * Find side-effects of expressions.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/sideeffect.d, _sideeffect.d)
  * Documentation:  https://dlang.org/phobos/dmd_sideeffect.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/sideeffect.d
diff --git a/gcc/d/dmd/statement.d b/gcc/d/dmd/statement.d
index 91e3fe7..be568f5 100644
--- a/gcc/d/dmd/statement.d
+++ b/gcc/d/dmd/statement.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/statement.html, Statements)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/statement.d, _statement.d)
  * Documentation:  https://dlang.org/phobos/dmd_statement.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/statement.d
@@ -72,7 +72,7 @@ TypeIdentifier getException()
 }
 
 /***********************************************************
- * Specification: http://dlang.org/spec/statement.html
+ * Specification: https://dlang.org/spec/statement.html
  */
 extern (C++) abstract class Statement : ASTNode
 {
diff --git a/gcc/d/dmd/statement.h b/gcc/d/dmd/statement.h
index 98b7bd3..dfb65a1 100644
--- a/gcc/d/dmd/statement.h
+++ b/gcc/d/dmd/statement.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/statement.h
  */
 
diff --git a/gcc/d/dmd/statement_rewrite_walker.d b/gcc/d/dmd/statement_rewrite_walker.d
index 2f6605c..b1f659d 100644
--- a/gcc/d/dmd/statement_rewrite_walker.d
+++ b/gcc/d/dmd/statement_rewrite_walker.d
@@ -1,9 +1,9 @@
 /**
  * Provides a visitor for statements that allows rewriting the currently visited node.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/statement_rewrite_walker.d, _statement_rewrite_walker.d)
  * Documentation:  https://dlang.org/phobos/dmd_statement_rewrite_walker.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/statement_rewrite_walker.d
diff --git a/gcc/d/dmd/statementsem.d b/gcc/d/dmd/statementsem.d
index 91855ac..faeba114 100644
--- a/gcc/d/dmd/statementsem.d
+++ b/gcc/d/dmd/statementsem.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/statement.html, Statements)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/statementsem.d, _statementsem.d)
  * Documentation:  https://dlang.org/phobos/dmd_statementsem.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/statementsem.d
diff --git a/gcc/d/dmd/staticassert.d b/gcc/d/dmd/staticassert.d
index 984dc42..7daf7cd 100644
--- a/gcc/d/dmd/staticassert.d
+++ b/gcc/d/dmd/staticassert.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/version.html#static-assert, Static Assert)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/staticassert.d, _staticassert.d)
  * Documentation:  https://dlang.org/phobos/dmd_staticassert.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/staticassert.d
diff --git a/gcc/d/dmd/staticassert.h b/gcc/d/dmd/staticassert.h
index 8f88080..5c00b46 100644
--- a/gcc/d/dmd/staticassert.h
+++ b/gcc/d/dmd/staticassert.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/staticassert.h
  */
 
diff --git a/gcc/d/dmd/staticcond.d b/gcc/d/dmd/staticcond.d
index 6d74ad2..6ff166a 100644
--- a/gcc/d/dmd/staticcond.d
+++ b/gcc/d/dmd/staticcond.d
@@ -1,9 +1,9 @@
 /**
  * Lazily evaluate static conditions for `static if`, `static assert` and template constraints.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/staticcond.d, _staticcond.d)
  * Documentation:  https://dlang.org/phobos/dmd_staticcond.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/staticcond.d
diff --git a/gcc/d/dmd/stmtstate.d b/gcc/d/dmd/stmtstate.d
index bb13d7c..3e26b8f 100644
--- a/gcc/d/dmd/stmtstate.d
+++ b/gcc/d/dmd/stmtstate.d
@@ -1,9 +1,9 @@
 /**
  * Used to help transform statement AST into flow graph.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/stmtstate.d, _stmtstate.d)
  * Documentation: https://dlang.org/phobos/dmd_stmtstate.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/stmtstate.d
diff --git a/gcc/d/dmd/target.d b/gcc/d/dmd/target.d
index 8e434a3..619304d 100644
--- a/gcc/d/dmd/target.d
+++ b/gcc/d/dmd/target.d
@@ -15,9 +15,9 @@
  * - $(LINK2 https://github.com/ldc-developers/ldc, LDC repository)
  * - $(LINK2 https://github.com/D-Programming-GDC/gcc, GDC repository)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/target.d, _target.d)
  * Documentation:  https://dlang.org/phobos/dmd_target.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/target.d
@@ -74,7 +74,7 @@ extern (C++) struct Target
         /* These are mutually exclusive; one and only one is set.
          * Match spelling and casing of corresponding version identifiers
          */
-        Freestanding = 0,
+        none         = 0,
         linux        = 1,
         Windows      = 2,
         OSX          = 4,
diff --git a/gcc/d/dmd/target.h b/gcc/d/dmd/target.h
index 6348d93..9c879de 100644
--- a/gcc/d/dmd/target.h
+++ b/gcc/d/dmd/target.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 2013-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 2013-2022 by The D Language Foundation, All Rights Reserved
  * written by Iain Buclaw
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/target.h
  */
 
diff --git a/gcc/d/dmd/template.h b/gcc/d/dmd/template.h
index 69cc84f..95cd349 100644
--- a/gcc/d/dmd/template.h
+++ b/gcc/d/dmd/template.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/template.h
  */
 
diff --git a/gcc/d/dmd/templateparamsem.d b/gcc/d/dmd/templateparamsem.d
index b462742..e093260 100644
--- a/gcc/d/dmd/templateparamsem.d
+++ b/gcc/d/dmd/templateparamsem.d
@@ -1,9 +1,9 @@
 /**
  * Semantic analysis of template parameters.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/templateparamsem.d, _templateparamsem.d)
  * Documentation:  https://dlang.org/phobos/dmd_templateparamsem.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/templateparamsem.d
diff --git a/gcc/d/dmd/tokens.d b/gcc/d/dmd/tokens.d
index e5b05d3..5830dbb 100644
--- a/gcc/d/dmd/tokens.d
+++ b/gcc/d/dmd/tokens.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/lex.html#tokens, Tokens)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/tokens.d, _tokens.d)
  * Documentation:  https://dlang.org/phobos/dmd_tokens.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/tokens.d
@@ -21,7 +21,7 @@ import dmd.identifier;
 import dmd.root.ctfloat;
 import dmd.common.outbuffer;
 import dmd.root.rmem;
-import dmd.utf;
+import dmd.root.utf;
 
 enum TOK : ubyte
 {
diff --git a/gcc/d/dmd/tokens.h b/gcc/d/dmd/tokens.h
index e095aa6..0a00ae7 100644
--- a/gcc/d/dmd/tokens.h
+++ b/gcc/d/dmd/tokens.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/tokens.h
  */
 
diff --git a/gcc/d/dmd/traits.d b/gcc/d/dmd/traits.d
index 7b9a8c8..ae8ab9b 100644
--- a/gcc/d/dmd/traits.d
+++ b/gcc/d/dmd/traits.d
@@ -3,9 +3,9 @@
  *
  * Specification: $(LINK2 https://dlang.org/spec/traits.html, Traits)
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/traits.d, _traits.d)
  * Documentation:  https://dlang.org/phobos/dmd_traits.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/traits.d
diff --git a/gcc/d/dmd/typesem.d b/gcc/d/dmd/typesem.d
index b8c4317..34b363d 100644
--- a/gcc/d/dmd/typesem.d
+++ b/gcc/d/dmd/typesem.d
@@ -1,9 +1,9 @@
 /**
  * Semantic analysis for D types.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/typesem.d, _typesem.d)
  * Documentation:  https://dlang.org/phobos/dmd_typesem.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/typesem.d
@@ -22,7 +22,6 @@ import dmd.arrayop;
 import dmd.arraytypes;
 import dmd.astcodegen;
 import dmd.astenums;
-import dmd.complex;
 import dmd.dcast;
 import dmd.dclass;
 import dmd.declaration;
@@ -52,6 +51,7 @@ import dmd.mtype;
 import dmd.objc;
 import dmd.opover;
 import dmd.parse;
+import dmd.root.complex;
 import dmd.root.ctfloat;
 import dmd.root.rmem;
 import dmd.common.outbuffer;
@@ -161,7 +161,7 @@ private void resolveTupleIndex(const ref Loc loc, Scope* sc, Dsymbol s, out Expr
     const(uinteger_t) d = eindex.toUInteger();
     if (d >= tup.objects.dim)
     {
-        .error(loc, "tuple index `%llu` exceeds length %zu", d, tup.objects.dim);
+        .error(loc, "tuple index `%llu` exceeds length %llu", d, cast(ulong)tup.objects.dim);
         pt = Type.terror;
         return;
     }
diff --git a/gcc/d/dmd/typinf.d b/gcc/d/dmd/typinf.d
index d05af61..21447ae 100644
--- a/gcc/d/dmd/typinf.d
+++ b/gcc/d/dmd/typinf.d
@@ -1,9 +1,9 @@
 /**
  * Generate `TypeInfo` objects, which are needed for run-time introspection of types.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/typeinf.d, _typeinf.d)
  * Documentation:  https://dlang.org/phobos/dmd_typinf.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/typinf.d
diff --git a/gcc/d/dmd/utf.d b/gcc/d/dmd/utf.d
deleted file mode 100644
index 1125c21..0000000
--- a/gcc/d/dmd/utf.d
+++ /dev/null
@@ -1,561 +0,0 @@
-/**
- * Functions related to UTF encoding.
- *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
- * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/utf.d, _utf.d)
- * Documentation:  https://dlang.org/phobos/dmd_utf.html
- * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/utf.d
- */
-
-module dmd.utf;
-
-nothrow pure @nogc:
-
-/// The Unicode code space is the range of code points [0x000000,0x10FFFF]
-/// except the UTF-16 surrogate pairs in the range [0xD800,0xDFFF]
-bool utf_isValidDchar(dchar c)
-{
-    // TODO: Whether non-char code points should be rejected is pending review.
-    // 0xFFFE and 0xFFFF are valid for internal use, like Phobos std.utf.isValidDChar
-    // See also https://issues.dlang.org/show_bug.cgi?id=1357
-    if (c < 0xD800) // Almost all characters in a typical document.
-        return true;
-    if (c > 0xDFFF && c <= 0x10FFFF)
-        return true;
-    return false;
-}
-
-/*******************************
- * Return !=0 if unicode alpha.
- * Use table from C99 Appendix D.
- */
-bool isUniAlpha(dchar c)
-{
-    static immutable wchar[2][] ALPHA_TABLE =
-    [
-        [0x00AA, 0x00AA],
-        [0x00B5, 0x00B5],
-        [0x00B7, 0x00B7],
-        [0x00BA, 0x00BA],
-        [0x00C0, 0x00D6],
-        [0x00D8, 0x00F6],
-        [0x00F8, 0x01F5],
-        [0x01FA, 0x0217],
-        [0x0250, 0x02A8],
-        [0x02B0, 0x02B8],
-        [0x02BB, 0x02BB],
-        [0x02BD, 0x02C1],
-        [0x02D0, 0x02D1],
-        [0x02E0, 0x02E4],
-        [0x037A, 0x037A],
-        [0x0386, 0x0386],
-        [0x0388, 0x038A],
-        [0x038C, 0x038C],
-        [0x038E, 0x03A1],
-        [0x03A3, 0x03CE],
-        [0x03D0, 0x03D6],
-        [0x03DA, 0x03DA],
-        [0x03DC, 0x03DC],
-        [0x03DE, 0x03DE],
-        [0x03E0, 0x03E0],
-        [0x03E2, 0x03F3],
-        [0x0401, 0x040C],
-        [0x040E, 0x044F],
-        [0x0451, 0x045C],
-        [0x045E, 0x0481],
-        [0x0490, 0x04C4],
-        [0x04C7, 0x04C8],
-        [0x04CB, 0x04CC],
-        [0x04D0, 0x04EB],
-        [0x04EE, 0x04F5],
-        [0x04F8, 0x04F9],
-        [0x0531, 0x0556],
-        [0x0559, 0x0559],
-        [0x0561, 0x0587],
-        [0x05B0, 0x05B9],
-        [0x05BB, 0x05BD],
-        [0x05BF, 0x05BF],
-        [0x05C1, 0x05C2],
-        [0x05D0, 0x05EA],
-        [0x05F0, 0x05F2],
-        [0x0621, 0x063A],
-        [0x0640, 0x0652],
-        [0x0660, 0x0669],
-        [0x0670, 0x06B7],
-        [0x06BA, 0x06BE],
-        [0x06C0, 0x06CE],
-        [0x06D0, 0x06DC],
-        [0x06E5, 0x06E8],
-        [0x06EA, 0x06ED],
-        [0x06F0, 0x06F9],
-        [0x0901, 0x0903],
-        [0x0905, 0x0939],
-        [0x093D, 0x094D],
-        [0x0950, 0x0952],
-        [0x0958, 0x0963],
-        [0x0966, 0x096F],
-        [0x0981, 0x0983],
-        [0x0985, 0x098C],
-        [0x098F, 0x0990],
-        [0x0993, 0x09A8],
-        [0x09AA, 0x09B0],
-        [0x09B2, 0x09B2],
-        [0x09B6, 0x09B9],
-        [0x09BE, 0x09C4],
-        [0x09C7, 0x09C8],
-        [0x09CB, 0x09CD],
-        [0x09DC, 0x09DD],
-        [0x09DF, 0x09E3],
-        [0x09E6, 0x09F1],
-        [0x0A02, 0x0A02],
-        [0x0A05, 0x0A0A],
-        [0x0A0F, 0x0A10],
-        [0x0A13, 0x0A28],
-        [0x0A2A, 0x0A30],
-        [0x0A32, 0x0A33],
-        [0x0A35, 0x0A36],
-        [0x0A38, 0x0A39],
-        [0x0A3E, 0x0A42],
-        [0x0A47, 0x0A48],
-        [0x0A4B, 0x0A4D],
-        [0x0A59, 0x0A5C],
-        [0x0A5E, 0x0A5E],
-        [0x0A66, 0x0A6F],
-        [0x0A74, 0x0A74],
-        [0x0A81, 0x0A83],
-        [0x0A85, 0x0A8B],
-        [0x0A8D, 0x0A8D],
-        [0x0A8F, 0x0A91],
-        [0x0A93, 0x0AA8],
-        [0x0AAA, 0x0AB0],
-        [0x0AB2, 0x0AB3],
-        [0x0AB5, 0x0AB9],
-        [0x0ABD, 0x0AC5],
-        [0x0AC7, 0x0AC9],
-        [0x0ACB, 0x0ACD],
-        [0x0AD0, 0x0AD0],
-        [0x0AE0, 0x0AE0],
-        [0x0AE6, 0x0AEF],
-        [0x0B01, 0x0B03],
-        [0x0B05, 0x0B0C],
-        [0x0B0F, 0x0B10],
-        [0x0B13, 0x0B28],
-        [0x0B2A, 0x0B30],
-        [0x0B32, 0x0B33],
-        [0x0B36, 0x0B39],
-        [0x0B3D, 0x0B43],
-        [0x0B47, 0x0B48],
-        [0x0B4B, 0x0B4D],
-        [0x0B5C, 0x0B5D],
-        [0x0B5F, 0x0B61],
-        [0x0B66, 0x0B6F],
-        [0x0B82, 0x0B83],
-        [0x0B85, 0x0B8A],
-        [0x0B8E, 0x0B90],
-        [0x0B92, 0x0B95],
-        [0x0B99, 0x0B9A],
-        [0x0B9C, 0x0B9C],
-        [0x0B9E, 0x0B9F],
-        [0x0BA3, 0x0BA4],
-        [0x0BA8, 0x0BAA],
-        [0x0BAE, 0x0BB5],
-        [0x0BB7, 0x0BB9],
-        [0x0BBE, 0x0BC2],
-        [0x0BC6, 0x0BC8],
-        [0x0BCA, 0x0BCD],
-        [0x0BE7, 0x0BEF],
-        [0x0C01, 0x0C03],
-        [0x0C05, 0x0C0C],
-        [0x0C0E, 0x0C10],
-        [0x0C12, 0x0C28],
-        [0x0C2A, 0x0C33],
-        [0x0C35, 0x0C39],
-        [0x0C3E, 0x0C44],
-        [0x0C46, 0x0C48],
-        [0x0C4A, 0x0C4D],
-        [0x0C60, 0x0C61],
-        [0x0C66, 0x0C6F],
-        [0x0C82, 0x0C83],
-        [0x0C85, 0x0C8C],
-        [0x0C8E, 0x0C90],
-        [0x0C92, 0x0CA8],
-        [0x0CAA, 0x0CB3],
-        [0x0CB5, 0x0CB9],
-        [0x0CBE, 0x0CC4],
-        [0x0CC6, 0x0CC8],
-        [0x0CCA, 0x0CCD],
-        [0x0CDE, 0x0CDE],
-        [0x0CE0, 0x0CE1],
-        [0x0CE6, 0x0CEF],
-        [0x0D02, 0x0D03],
-        [0x0D05, 0x0D0C],
-        [0x0D0E, 0x0D10],
-        [0x0D12, 0x0D28],
-        [0x0D2A, 0x0D39],
-        [0x0D3E, 0x0D43],
-        [0x0D46, 0x0D48],
-        [0x0D4A, 0x0D4D],
-        [0x0D60, 0x0D61],
-        [0x0D66, 0x0D6F],
-        [0x0E01, 0x0E3A],
-        [0x0E40, 0x0E5B],
-        [0x0E81, 0x0E82],
-        [0x0E84, 0x0E84],
-        [0x0E87, 0x0E88],
-        [0x0E8A, 0x0E8A],
-        [0x0E8D, 0x0E8D],
-        [0x0E94, 0x0E97],
-        [0x0E99, 0x0E9F],
-        [0x0EA1, 0x0EA3],
-        [0x0EA5, 0x0EA5],
-        [0x0EA7, 0x0EA7],
-        [0x0EAA, 0x0EAB],
-        [0x0EAD, 0x0EAE],
-        [0x0EB0, 0x0EB9],
-        [0x0EBB, 0x0EBD],
-        [0x0EC0, 0x0EC4],
-        [0x0EC6, 0x0EC6],
-        [0x0EC8, 0x0ECD],
-        [0x0ED0, 0x0ED9],
-        [0x0EDC, 0x0EDD],
-        [0x0F00, 0x0F00],
-        [0x0F18, 0x0F19],
-        [0x0F20, 0x0F33],
-        [0x0F35, 0x0F35],
-        [0x0F37, 0x0F37],
-        [0x0F39, 0x0F39],
-        [0x0F3E, 0x0F47],
-        [0x0F49, 0x0F69],
-        [0x0F71, 0x0F84],
-        [0x0F86, 0x0F8B],
-        [0x0F90, 0x0F95],
-        [0x0F97, 0x0F97],
-        [0x0F99, 0x0FAD],
-        [0x0FB1, 0x0FB7],
-        [0x0FB9, 0x0FB9],
-        [0x10A0, 0x10C5],
-        [0x10D0, 0x10F6],
-        [0x1E00, 0x1E9B],
-        [0x1EA0, 0x1EF9],
-        [0x1F00, 0x1F15],
-        [0x1F18, 0x1F1D],
-        [0x1F20, 0x1F45],
-        [0x1F48, 0x1F4D],
-        [0x1F50, 0x1F57],
-        [0x1F59, 0x1F59],
-        [0x1F5B, 0x1F5B],
-        [0x1F5D, 0x1F5D],
-        [0x1F5F, 0x1F7D],
-        [0x1F80, 0x1FB4],
-        [0x1FB6, 0x1FBC],
-        [0x1FBE, 0x1FBE],
-        [0x1FC2, 0x1FC4],
-        [0x1FC6, 0x1FCC],
-        [0x1FD0, 0x1FD3],
-        [0x1FD6, 0x1FDB],
-        [0x1FE0, 0x1FEC],
-        [0x1FF2, 0x1FF4],
-        [0x1FF6, 0x1FFC],
-        [0x203F, 0x2040],
-        [0x207F, 0x207F],
-        [0x2102, 0x2102],
-        [0x2107, 0x2107],
-        [0x210A, 0x2113],
-        [0x2115, 0x2115],
-        [0x2118, 0x211D],
-        [0x2124, 0x2124],
-        [0x2126, 0x2126],
-        [0x2128, 0x2128],
-        [0x212A, 0x2131],
-        [0x2133, 0x2138],
-        [0x2160, 0x2182],
-        [0x3005, 0x3007],
-        [0x3021, 0x3029],
-        [0x3041, 0x3093],
-        [0x309B, 0x309C],
-        [0x30A1, 0x30F6],
-        [0x30FB, 0x30FC],
-        [0x3105, 0x312C],
-        [0x4E00, 0x9FA5],
-        [0xAC00, 0xD7A3]
-    ];
-
-    size_t high = ALPHA_TABLE.length - 1;
-    // Shortcut search if c is out of range
-    size_t low = (c < ALPHA_TABLE[0][0] || ALPHA_TABLE[high][1] < c) ? high + 1 : 0;
-    // Binary search
-    while (low <= high)
-    {
-        size_t mid = (low + high) >> 1;
-        if (c < ALPHA_TABLE[mid][0])
-            high = mid - 1;
-        else if (ALPHA_TABLE[mid][1] < c)
-            low = mid + 1;
-        else
-        {
-            assert(ALPHA_TABLE[mid][0] <= c && c <= ALPHA_TABLE[mid][1]);
-            return true;
-        }
-    }
-    return false;
-}
-
-/**
- * Returns the code length of c in code units.
- */
-int utf_codeLengthChar(dchar c)
-{
-    if (c <= 0x7F)
-        return 1;
-    if (c <= 0x7FF)
-        return 2;
-    if (c <= 0xFFFF)
-        return 3;
-    if (c <= 0x10FFFF)
-        return 4;
-    assert(false);
-}
-
-int utf_codeLengthWchar(dchar c)
-{
-    return c <= 0xFFFF ? 1 : 2;
-}
-
-/**
- * Returns the code length of c in code units for the encoding.
- * sz is the encoding: 1 = utf8, 2 = utf16, 4 = utf32.
- */
-int utf_codeLength(int sz, dchar c)
-{
-    if (sz == 1)
-        return utf_codeLengthChar(c);
-    if (sz == 2)
-        return utf_codeLengthWchar(c);
-    assert(sz == 4);
-    return 1;
-}
-
-void utf_encodeChar(char* s, dchar c)
-{
-    assert(s !is null);
-    assert(utf_isValidDchar(c));
-    if (c <= 0x7F)
-    {
-        s[0] = cast(char)c;
-    }
-    else if (c <= 0x07FF)
-    {
-        s[0] = cast(char)(0xC0 | (c >> 6));
-        s[1] = cast(char)(0x80 | (c & 0x3F));
-    }
-    else if (c <= 0xFFFF)
-    {
-        s[0] = cast(char)(0xE0 | (c >> 12));
-        s[1] = cast(char)(0x80 | ((c >> 6) & 0x3F));
-        s[2] = cast(char)(0x80 | (c & 0x3F));
-    }
-    else if (c <= 0x10FFFF)
-    {
-        s[0] = cast(char)(0xF0 | (c >> 18));
-        s[1] = cast(char)(0x80 | ((c >> 12) & 0x3F));
-        s[2] = cast(char)(0x80 | ((c >> 6) & 0x3F));
-        s[3] = cast(char)(0x80 | (c & 0x3F));
-    }
-    else
-        assert(0);
-}
-
-void utf_encodeWchar(wchar* s, dchar c)
-{
-    assert(s !is null);
-    assert(utf_isValidDchar(c));
-    if (c <= 0xFFFF)
-    {
-        s[0] = cast(wchar)c;
-    }
-    else
-    {
-        s[0] = cast(wchar)((((c - 0x010000) >> 10) & 0x03FF) + 0xD800);
-        s[1] = cast(wchar)(((c - 0x010000) & 0x03FF) + 0xDC00);
-    }
-}
-
-void utf_encode(int sz, void* s, dchar c)
-{
-    if (sz == 1)
-        utf_encodeChar(cast(char*)s, c);
-    else if (sz == 2)
-        utf_encodeWchar(cast(wchar*)s, c);
-    else
-    {
-        assert(sz == 4);
-        *(cast(dchar*)s) = c;
-    }
-}
-
-/********************************************
- * Decode a UTF-8 sequence as a single UTF-32 code point.
- * Params:
- *      s = UTF-8 sequence
- *      ridx = starting index in s[], updated to reflect number of code units decoded
- *      rresult = set to character decoded
- * Returns:
- *      null on success, otherwise error message string
- */
-string utf_decodeChar(const(char)[] s, ref size_t ridx, out dchar rresult)
-{
-    // UTF-8 decoding errors
-    static immutable string UTF8_DECODE_OK = null; // no error
-    static immutable string UTF8_DECODE_OUTSIDE_CODE_SPACE = "Outside Unicode code space";
-    static immutable string UTF8_DECODE_TRUNCATED_SEQUENCE = "Truncated UTF-8 sequence";
-    static immutable string UTF8_DECODE_OVERLONG = "Overlong UTF-8 sequence";
-    static immutable string UTF8_DECODE_INVALID_TRAILER = "Invalid trailing code unit";
-    static immutable string UTF8_DECODE_INVALID_CODE_POINT = "Invalid code point decoded";
-
-    /* The following encodings are valid, except for the 5 and 6 byte
-     * combinations:
-     *      0xxxxxxx
-     *      110xxxxx 10xxxxxx
-     *      1110xxxx 10xxxxxx 10xxxxxx
-     *      11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
-     *      111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
-     *      1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
-     */
-    static immutable ubyte[256] UTF8_STRIDE =
-    [
-        1,1,1,1, 1,1,1,1,
-        1,1,1,1, 1,1,1,1,
-        1,1,1,1, 1,1,1,1,
-        1,1,1,1, 1,1,1,1,
-        1,1,1,1, 1,1,1,1,
-        1,1,1,1, 1,1,1,1,
-        1,1,1,1, 1,1,1,1,
-        1,1,1,1, 1,1,1,1,
-
-        1,1,1,1, 1,1,1,1,
-        1,1,1,1, 1,1,1,1,
-        1,1,1,1, 1,1,1,1,
-        1,1,1,1, 1,1,1,1,
-        1,1,1,1, 1,1,1,1,
-        1,1,1,1, 1,1,1,1,
-        1,1,1,1, 1,1,1,1,
-        1,1,1,1, 1,1,1,1,
-
-        0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF,
-        0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF,
-        0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF,
-        0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF,
-        0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF,
-        0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF,
-        0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF,
-        0xFF,0xFF,0xFF,0xFF, 0xFF,0xFF,0xFF,0xFF,
-
-        2,2,2,2, 2,2,2,2,
-        2,2,2,2, 2,2,2,2,
-        2,2,2,2, 2,2,2,2,
-        2,2,2,2, 2,2,2,2,
-
-        3,3,3,3, 3,3,3,3,
-        3,3,3,3, 3,3,3,3,
-
-        4,4,4,4, 4,4,4,4,
-        5,5,5,5, 6,6,0xFF,0xFF
-    ];
-
-    assert(s !is null);
-    size_t i = ridx++;
-
-    const char u = s[i];
-    // Pre-stage results for ASCII and error cases
-    rresult = u;
-    //printf("utf_decodeChar(s = %02x, %02x, %02x len = %d)\n", u, s[1], s[2], len);
-    // Get expected sequence length
-    const size_t n = UTF8_STRIDE[u];
-    switch (n)
-    {
-    case 1:
-        // ASCII
-        return UTF8_DECODE_OK;
-    case 2:
-    case 3:
-    case 4:
-        // multi-byte UTF-8
-        break;
-    default:
-        // 5- or 6-byte sequence
-        return UTF8_DECODE_OUTSIDE_CODE_SPACE;
-    }
-    if (s.length < i + n) // source too short
-        return UTF8_DECODE_TRUNCATED_SEQUENCE;
-    // Pick off 7 - n low bits from first code unit
-    dchar c = u & ((1 << (7 - n)) - 1);
-    /* The following combinations are overlong, and illegal:
-     *      1100000x (10xxxxxx)
-     *      11100000 100xxxxx (10xxxxxx)
-     *      11110000 1000xxxx (10xxxxxx 10xxxxxx)
-     *      11111000 10000xxx (10xxxxxx 10xxxxxx 10xxxxxx)
-     *      11111100 100000xx (10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx)
-     */
-    const char u2 = s[++i];
-    // overlong combination
-    if ((u & 0xFE) == 0xC0 || (u == 0xE0 && (u2 & 0xE0) == 0x80) || (u == 0xF0 && (u2 & 0xF0) == 0x80) || (u == 0xF8 && (u2 & 0xF8) == 0x80) || (u == 0xFC && (u2 & 0xFC) == 0x80))
-        return UTF8_DECODE_OVERLONG;
-    // Decode remaining bits
-    for (const m = n + i - 1; i != m; ++i)
-    {
-        const u3 = s[i];
-        if ((u3 & 0xC0) != 0x80) // trailing bytes are 10xxxxxx
-            return UTF8_DECODE_INVALID_TRAILER;
-        c = (c << 6) | (u3 & 0x3F);
-    }
-    if (!utf_isValidDchar(c))
-        return UTF8_DECODE_INVALID_CODE_POINT;
-    ridx = i;
-    rresult = c;
-    return UTF8_DECODE_OK;
-}
-
-/********************************************
- * Decode a UTF-16 sequence as a single UTF-32 code point.
- * Params:
- *      s = UTF-16 sequence
- *      ridx = starting index in s[], updated to reflect number of code units decoded
- *      rresult = set to character decoded
- * Returns:
- *      null on success, otherwise error message string
- */
-string utf_decodeWchar(const(wchar)[] s, ref size_t ridx, out dchar rresult)
-{
-    // UTF-16 decoding errors
-    static immutable string UTF16_DECODE_OK = null; // no error
-    static immutable string UTF16_DECODE_TRUNCATED_SEQUENCE = "Truncated UTF-16 sequence";
-    static immutable string UTF16_DECODE_INVALID_SURROGATE = "Invalid low surrogate";
-    static immutable string UTF16_DECODE_UNPAIRED_SURROGATE = "Unpaired surrogate";
-    static immutable string UTF16_DECODE_INVALID_CODE_POINT = "Invalid code point decoded";
-
-    assert(s !is null);
-    size_t i = ridx++;
-
-    // Pre-stage results for single wchar and error cases
-    dchar u = rresult = s[i];
-    if (u < 0xD800) // Single wchar codepoint
-        return UTF16_DECODE_OK;
-    if (0xD800 <= u && u <= 0xDBFF) // Surrogate pair
-    {
-        if (s.length <= i + 1)
-            return UTF16_DECODE_TRUNCATED_SEQUENCE;
-        wchar u2 = s[i + 1];
-        if (u2 < 0xDC00 || 0xDFFF < u)
-            return UTF16_DECODE_INVALID_SURROGATE;
-        u = ((u - 0xD7C0) << 10) + (u2 - 0xDC00);
-        ++ridx;
-    }
-    else if (0xDC00 <= u && u <= 0xDFFF)
-        return UTF16_DECODE_UNPAIRED_SURROGATE;
-    if (!utf_isValidDchar(u))
-        return UTF16_DECODE_INVALID_CODE_POINT;
-    rresult = u;
-    return UTF16_DECODE_OK;
-}
diff --git a/gcc/d/dmd/utils.d b/gcc/d/dmd/utils.d
index 6cd5d20..f8e7e48 100644
--- a/gcc/d/dmd/utils.d
+++ b/gcc/d/dmd/utils.d
@@ -1,9 +1,9 @@
 /**
  * This module defines some utility functions for DMD.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/utils.d, _utils.d)
  * Documentation:  https://dlang.org/phobos/dmd_utils.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/utils.d
diff --git a/gcc/d/dmd/version.h b/gcc/d/dmd/version.h
index 6c5e2f0..afc4557 100644
--- a/gcc/d/dmd/version.h
+++ b/gcc/d/dmd/version.h
@@ -1,10 +1,10 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
+ * Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
  * written by Walter Bright
- * http://www.digitalmars.com
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/version.h
  */
 
diff --git a/gcc/d/dmd/visitor.d b/gcc/d/dmd/visitor.d
index 8b9c012..e6dfa11 100644
--- a/gcc/d/dmd/visitor.d
+++ b/gcc/d/dmd/visitor.d
@@ -1,9 +1,9 @@
 /**
  * Provides a visitor class visiting all AST nodes present in the compiler.
  *
- * Copyright:   Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
- * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
- * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
+ * Copyright:   Copyright (C) 1999-2022 by The D Language Foundation, All Rights Reserved
+ * Authors:     $(LINK2 https://www.digitalmars.com, Walter Bright)
+ * License:     $(LINK2 https://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/visitor.d, _visitor.d)
  * Documentation:  https://dlang.org/phobos/dmd_visitor.html
  * Coverage:    https://codecov.io/gh/dlang/dmd/src/master/src/dmd/visitor.d
diff --git a/gcc/d/dmd/visitor.h b/gcc/d/dmd/visitor.h
index e61f16d..5bad56b 100644
--- a/gcc/d/dmd/visitor.h
+++ b/gcc/d/dmd/visitor.h
@@ -1,9 +1,9 @@
 
 /* Compiler implementation of the D programming language
- * Copyright (C) 2013-2021 by The D Language Foundation, All Rights Reserved
- * http://www.digitalmars.com
+ * Copyright (C) 2013-2022 by The D Language Foundation, All Rights Reserved
+ * https://www.digitalmars.com
  * Distributed under the Boost Software License, Version 1.0.
- * http://www.boost.org/LICENSE_1_0.txt
+ * https://www.boost.org/LICENSE_1_0.txt
  * https://github.com/dlang/dmd/blob/master/src/dmd/visitor.h
  */
 
diff --git a/gcc/testsuite/gdc.test/compilable/99bottles.d b/gcc/testsuite/gdc.test/compilable/99bottles.d
index 09360a8..5341a49 100644
--- a/gcc/testsuite/gdc.test/compilable/99bottles.d
+++ b/gcc/testsuite/gdc.test/compilable/99bottles.d
@@ -1,5 +1,5 @@
 // written by Don Clugston:
-//    http://www.digitalmars.com/d/archives/digitalmars/D/announce/4374.html
+//    https://www.digitalmars.com/d/archives/digitalmars/D/announce/4374.html
 //    http://www.99-bottles-of-beer.net/language-d-1212.html
 
 // Generates the "99 bottles of beer" song at compile time,
diff --git a/gcc/testsuite/gdc.test/compilable/art4769.d b/gcc/testsuite/gdc.test/compilable/art4769.d
index 34adcda..dfffe77 100644
--- a/gcc/testsuite/gdc.test/compilable/art4769.d
+++ b/gcc/testsuite/gdc.test/compilable/art4769.d
@@ -1,4 +1,4 @@
-// http://www.digitalmars.com/webnews/newsgroups.php?art_group=digitalmars.D.bugs&article_id=4769
+// https://www.digitalmars.com/d/archives/digitalmars/D/bugs/4769.html
 
 // COMPILED_IMPORTS: imports/art4769a.d imports/art4769b.d
 // PERMUTE_ARGS:
diff --git a/gcc/testsuite/gdc.test/compilable/test69.d b/gcc/testsuite/gdc.test/compilable/test69.d
index 66662dc..395a49f 100644
--- a/gcc/testsuite/gdc.test/compilable/test69.d
+++ b/gcc/testsuite/gdc.test/compilable/test69.d
@@ -1,7 +1,7 @@
 // PERMUTE_ARGS:
 
 // ICE(expression.c) DMD 0.110
-// http://www.digitalmars.com/d/archives/digitalmars/D/bugs/2966.html
+// https://www.digitalmars.com/d/archives/digitalmars/D/bugs/2966.html
 
 string str255() { return "\255"; }
 void fromFail49()
diff --git a/gcc/testsuite/gdc.test/fail_compilation/fail11.d b/gcc/testsuite/gdc.test/fail_compilation/fail11.d
index 8ba05df..9a5a815 100644
--- a/gcc/testsuite/gdc.test/fail_compilation/fail11.d
+++ b/gcc/testsuite/gdc.test/fail_compilation/fail11.d
@@ -5,7 +5,7 @@ fail_compilation/fail11.d(12): Error: `int*` has no effect
 ---
 */
 
-// http://forum.dlang.org/thread/c738o9$1p7i$1@digitaldaemon.com
+// https://forum.dlang.org/thread/c738o9$1p7i$1@digitaldaemon.com
 
 void main()
 {
diff --git a/gcc/testsuite/gdc.test/fail_compilation/fail15.d b/gcc/testsuite/gdc.test/fail_compilation/fail15.d
index 0386b9a..cd18485 100644
--- a/gcc/testsuite/gdc.test/fail_compilation/fail15.d
+++ b/gcc/testsuite/gdc.test/fail_compilation/fail15.d
@@ -6,7 +6,7 @@ fail_compilation/fail15.d(24): Error: cannot use `[]` operator on expression of
 */
 /*
 Segfault on DMD 0.095
-http://www.digitalmars.com/d/archives/digitalmars/D/bugs/926.html
+https://www.digitalmars.com/d/archives/digitalmars/D/bugs/926.html
 */
 module test;
 
diff --git a/gcc/testsuite/gdc.test/fail_compilation/fail35.d b/gcc/testsuite/gdc.test/fail_compilation/fail35.d
index c35dfe1..4f47a62 100644
--- a/gcc/testsuite/gdc.test/fail_compilation/fail35.d
+++ b/gcc/testsuite/gdc.test/fail_compilation/fail35.d
@@ -5,7 +5,7 @@ fail_compilation/fail35.d(15): Error: variable `t` cannot be read at compile tim
 ---
 */
 
-// http://www.digitalmars.com/d/archives/digitalmars/D/bugs/2372.html
+// https://www.digitalmars.com/d/archives/digitalmars/D/bugs/2372.html
 // allegedly crashes, but cannot reproduce
 
 void main()
diff --git a/gcc/testsuite/gdc.test/fail_compilation/fail73.d b/gcc/testsuite/gdc.test/fail_compilation/fail73.d
index b9b480d..0242201 100644
--- a/gcc/testsuite/gdc.test/fail_compilation/fail73.d
+++ b/gcc/testsuite/gdc.test/fail_compilation/fail73.d
@@ -6,7 +6,7 @@ fail_compilation/fail73.d(20): Error: `case` not in `switch` statement
 */
 
 // segfault DMD 0.120
-// http://www.digitalmars.com/d/archives/digitalmars/D/bugs/4634.html
+// https://www.digitalmars.com/d/archives/digitalmars/D/bugs/4634.html
 
 void main()
 {
diff --git a/gcc/testsuite/gdc.test/fail_compilation/misc_parser_err_cov1.d b/gcc/testsuite/gdc.test/fail_compilation/misc_parser_err_cov1.d
index df169e19..22cf392 100644
--- a/gcc/testsuite/gdc.test/fail_compilation/misc_parser_err_cov1.d
+++ b/gcc/testsuite/gdc.test/fail_compilation/misc_parser_err_cov1.d
@@ -15,14 +15,18 @@ fail_compilation/misc_parser_err_cov1.d(35): Error: `key:value` expected for ass
 fail_compilation/misc_parser_err_cov1.d(36): Error: basic type expected, not `;`
 fail_compilation/misc_parser_err_cov1.d(36): Error: `{ members }` expected for anonymous class
 fail_compilation/misc_parser_err_cov1.d(38): Error: template argument expected following `!`
-fail_compilation/misc_parser_err_cov1.d(38): Error: found `if` when expecting `)`
-fail_compilation/misc_parser_err_cov1.d(38): Error: found `)` instead of statement
+fail_compilation/misc_parser_err_cov1.d(38): Error: missing closing `)` after `if (parseShift!()`
+fail_compilation/misc_parser_err_cov1.d(38): Error: found `)` when expecting `(`
+fail_compilation/misc_parser_err_cov1.d(39): Error: missing closing `)` after `if (`
 fail_compilation/misc_parser_err_cov1.d(39): Error: identifier expected following `(type)`.
 fail_compilation/misc_parser_err_cov1.d(39): Error: expression expected, not `;`
 fail_compilation/misc_parser_err_cov1.d(40): Error: semicolon expected following auto declaration, not `auto`
 fail_compilation/misc_parser_err_cov1.d(40): Error: identifier or `new` expected following `.`, not `+`
-fail_compilation/misc_parser_err_cov1.d(41): Error: declaration expected, not `(`
-fail_compilation/misc_parser_err_cov1.d(42): Error: unrecognized declaration
+fail_compilation/misc_parser_err_cov1.d(41): Error: identifier or new keyword expected following `(...)`.
+fail_compilation/misc_parser_err_cov1.d(41): Error: found `.` when expecting `;` following statement
+fail_compilation/misc_parser_err_cov1.d(41): Error: expression expected, not `;`
+fail_compilation/misc_parser_err_cov1.d(42): Error: found `}` when expecting `;` following statement
+fail_compilation/misc_parser_err_cov1.d(43): Error: found `End of File` when expecting `}` following compound statement
 ---
 */
 module misc_parser_err_cov1;
diff --git a/gcc/testsuite/gdc.test/fail_compilation/parseStc.d b/gcc/testsuite/gdc.test/fail_compilation/parseStc.d
index e0ce2c3..c9c4288 100644
--- a/gcc/testsuite/gdc.test/fail_compilation/parseStc.d
+++ b/gcc/testsuite/gdc.test/fail_compilation/parseStc.d
@@ -1,9 +1,10 @@
 /*
 TEST_OUTPUT:
 ---
-fail_compilation/parseStc.d(11): Error: found `;` when expecting `)`
-fail_compilation/parseStc.d(11): Error: found `)` when expecting `;` following statement
-fail_compilation/parseStc.d(12): Error: redundant attribute `const`
+fail_compilation/parseStc.d(12): Error: missing closing `)` after `if (x`
+fail_compilation/parseStc.d(12): Error: use `{ }` for an empty statement, not `;`
+fail_compilation/parseStc.d(12): Error: found `)` when expecting `;` following statement
+fail_compilation/parseStc.d(13): Error: redundant attribute `const`
 ---
 */
 void test1()
@@ -15,9 +16,9 @@ void test1()
 /*
 TEST_OUTPUT:
 ---
-fail_compilation/parseStc.d(25): Error: redundant attribute `const`
 fail_compilation/parseStc.d(26): Error: redundant attribute `const`
-fail_compilation/parseStc.d(27): Error: conflicting attribute `immutable`
+fail_compilation/parseStc.d(27): Error: redundant attribute `const`
+fail_compilation/parseStc.d(28): Error: conflicting attribute `immutable`
 ---
 */
 void test2()
@@ -30,8 +31,8 @@ void test2()
 /*
 TEST_OUTPUT:
 ---
-fail_compilation/parseStc.d(37): Error: redundant attribute `const`
 fail_compilation/parseStc.d(38): Error: redundant attribute `const`
+fail_compilation/parseStc.d(39): Error: redundant attribute `const`
 ---
 */
 struct S3 { const const test3() {} }
diff --git a/gcc/testsuite/gdc.test/runnable/mars1.d b/gcc/testsuite/gdc.test/runnable/mars1.d
index 30aa950..c981334 100644
--- a/gcc/testsuite/gdc.test/runnable/mars1.d
+++ b/gcc/testsuite/gdc.test/runnable/mars1.d
@@ -1923,7 +1923,7 @@ void test20050()
 
 ////////////////////////////////////////////////////////////////////////
 
-// http://github.com/dlang/dmd/pull/11238
+// https://github.com/dlang/dmd/pull/11238
 
 int testCpStatic1(int y)
 {
@@ -1960,7 +1960,7 @@ void test7()
 
 ////////////////////////////////////////////////////////////////////////
 
-// http://github.com/dlang/dmd/pull/11388
+// https://github.com/dlang/dmd/pull/11388
 
 ushort byteswap(ushort x) pure
 {
diff --git a/gcc/testsuite/gdc.test/runnable/template1.d b/gcc/testsuite/gdc.test/runnable/template1.d
index dde9213..ed237d8 100644
--- a/gcc/testsuite/gdc.test/runnable/template1.d
+++ b/gcc/testsuite/gdc.test/runnable/template1.d
@@ -1554,7 +1554,7 @@ void test64()
 }
 
 /******************************************/
-// http://www.digitalmars.com/d/archives/28052.html
+// https://www.digitalmars.com/d/archives/28052.html
 
 alias int value_type;
 
@@ -1923,7 +1923,7 @@ specialization:: first int
 
 
 /******************************************/
-// http://www.digitalmars.com/pnews/read.php?server=news.digitalmars.com&group=digitalmars.D.bugs&artnum=2117
+// https://www.digitalmars.com/d/archives/digitalmars/D/bugs/2117.html
 
 class Conversion(T,U){
         alias char Small;
diff --git a/gcc/testsuite/gdc.test/runnable/template2.d b/gcc/testsuite/gdc.test/runnable/template2.d
index fe08a6c0..234cb71 100644
--- a/gcc/testsuite/gdc.test/runnable/template2.d
+++ b/gcc/testsuite/gdc.test/runnable/template2.d
@@ -1,5 +1,5 @@
 // original post to the D newsgroup:
-//    http://www.digitalmars.com/pnews/read.php?server=news.digitalmars.com&group=D&artnum=10554&header
+//    https://www.digitalmars.com/d/archives/10510.html#N10554
 // Test to manipulate 3D vectors, in D!
 // by Sean L Palmer (seanpalmer@directvinternet.com)
 // This code is released without any warranty.  Use at your own risk.
diff --git a/gcc/testsuite/gdc.test/runnable/template9.d b/gcc/testsuite/gdc.test/runnable/template9.d
index 63620dd..cb3de5b 100644
--- a/gcc/testsuite/gdc.test/runnable/template9.d
+++ b/gcc/testsuite/gdc.test/runnable/template9.d
@@ -4706,7 +4706,7 @@ void test14735()
 {
     char[64] buf;
 
-    // Supported from 2.063: (http://dlang.org/changelog#implicitarraycast)
+    // Supported from 2.063: (https://dlang.org/changelog/2.063.html#implicitarraycast)
     assert(indexOf14735a(buf[0..32], '\0') == 2);
     assert(indexOf14735b(buf[0..32], '\0') == 2);
 
diff --git a/gcc/testsuite/gdc.test/runnable/test12.d b/gcc/testsuite/gdc.test/runnable/test12.d
index dac4ed6..01c7486 100644
--- a/gcc/testsuite/gdc.test/runnable/test12.d
+++ b/gcc/testsuite/gdc.test/runnable/test12.d
@@ -832,7 +832,7 @@ void test38()
 
 
 /**************************************/
-// http://www.digitalmars.com/d/archives/digitalmars/D/bugs/2409.html
+// https://www.digitalmars.com/d/archives/digitalmars/D/bugs/2409.html
 
 class C39
 {
diff --git a/gcc/testsuite/gdc.test/runnable/test15.d b/gcc/testsuite/gdc.test/runnable/test15.d
index 222742c..70e3a82 100644
--- a/gcc/testsuite/gdc.test/runnable/test15.d
+++ b/gcc/testsuite/gdc.test/runnable/test15.d
@@ -515,7 +515,7 @@ void test30()
 
 
 /************************************/
-// http://www.digitalmars.com/d/archives/18204.html
+// https://www.digitalmars.com/d/archives/18204.html
 // DMD0.050 also failed with alias.
 
 alias int recls_bool_t;
diff --git a/gcc/testsuite/gdc.test/runnable/test20855.d b/gcc/testsuite/gdc.test/runnable/test20855.d
index 7e43ec8..30152fe 100644
--- a/gcc/testsuite/gdc.test/runnable/test20855.d
+++ b/gcc/testsuite/gdc.test/runnable/test20855.d
@@ -1,3 +1,4 @@
+// PERMUTE_ARGS: -O
 // https://issues.dlang.org/show_bug.cgi?id=20855
 
 string exp()
diff --git a/gcc/testsuite/gdc.test/runnable/test22.d b/gcc/testsuite/gdc.test/runnable/test22.d
index 1d806d6..38a9cc3 100644
--- a/gcc/testsuite/gdc.test/runnable/test22.d
+++ b/gcc/testsuite/gdc.test/runnable/test22.d
@@ -16,7 +16,7 @@ extern(C)
 
 /*************************************/
 
-// http://www.digitalmars.com/d/archives/digitalmars/D/bugs/4766.html
+// https://www.digitalmars.com/d/archives/digitalmars/D/bugs/4766.html
 // Only with -O
 
 real randx()
diff --git a/gcc/testsuite/gdc.test/runnable/testarray.d b/gcc/testsuite/gdc.test/runnable/testarray.d
index 4784f47..02bf771 100644
--- a/gcc/testsuite/gdc.test/runnable/testarray.d
+++ b/gcc/testsuite/gdc.test/runnable/testarray.d
@@ -3,7 +3,7 @@
 
 import core.memory;
 
-// see http://forum.dlang.org/thread/4BB6296E.6050506@digitalmars.com for more info
+// see https://forum.dlang.org/thread/4BB6296E.6050506@digitalmars.com for more info
 
 // failure case for bug fixed by druntime rev 282
 // how it works:
diff --git a/gcc/testsuite/gdc.test/runnable/testcontracts.d b/gcc/testsuite/gdc.test/runnable/testcontracts.d
index 7869691..ba0dc69 100644
--- a/gcc/testsuite/gdc.test/runnable/testcontracts.d
+++ b/gcc/testsuite/gdc.test/runnable/testcontracts.d
@@ -239,7 +239,7 @@ void test6()
 /*******************************************/
 
 /+
-// http://d.puremagic.com/issues/show_bug.cgi?id=3722
+// https://issues.dlang.org/show_bug.cgi?id=3722
 
 class Bug3722A
 {
diff --git a/gcc/testsuite/gdc.test/runnable/testsafe.d b/gcc/testsuite/gdc.test/runnable/testsafe.d
index 40496f5..11813a0 100644
--- a/gcc/testsuite/gdc.test/runnable/testsafe.d
+++ b/gcc/testsuite/gdc.test/runnable/testsafe.d
@@ -1,6 +1,6 @@
 // PERMUTE_ARGS:
 
-//http://d.puremagic.com/issues/show_bug.cgi?id=5415
+//https://issues.dlang.org/show_bug.cgi?id=5415
 
 @safe
 void pointercast()
@@ -31,7 +31,7 @@ void pointercast2()
 
 @safe
 void pointerarithmetic()
-{//http://d.puremagic.com/issues/show_bug.cgi?id=4132
+{//https://issues.dlang.org/show_bug.cgi?id=4132
     void* a;
     int b;
 
@@ -273,7 +273,7 @@ void use__gshared()
 
 @safe
 void voidinitializers()
-{//http://d.puremagic.com/issues/show_bug.cgi?id=4885
+{//https://issues.dlang.org/show_bug.cgi?id=4885
     static assert(!__traits(compiles, () @safe { uint* ptr = void; } ));
     static assert( __traits(compiles, () @safe { uint i = void; } ));
     static assert( __traits(compiles, () @safe { uint[2] a = void; } ));
@@ -290,14 +290,14 @@ void voidinitializers()
 
 @safe
 void pointerindex()
-{//http://d.puremagic.com/issues/show_bug.cgi?id=9195
+{//https://issues.dlang.org/show_bug.cgi?id=9195
     static assert(!__traits(compiles, () @safe { int* p; auto a = p[30]; }));
     static assert( __traits(compiles, () @safe{ int* p; auto a = p[0]; }));
 }
 
 @safe
 void basiccast()
-{//http://d.puremagic.com/issues/show_bug.cgi?id=5088
+{//https://issues.dlang.org/show_bug.cgi?id=5088
     auto a = cast(int)cast(const int)1;
     auto b = cast(real)cast(const int)1;
     auto c = cast(real)cast(const real)2.0;
diff --git a/gcc/testsuite/gdc.test/runnable/traits_child.d b/gcc/testsuite/gdc.test/runnable/traits_child.d
index 056b8f1..bea8511 100644
--- a/gcc/testsuite/gdc.test/runnable/traits_child.d
+++ b/gcc/testsuite/gdc.test/runnable/traits_child.d
@@ -64,7 +64,7 @@ alias cm = C.m;
 alias cmset = C.m.set;
 
 
-// adapted from http://thecybershadow.net/d/dconf2017/#/21
+// adapted from https://thecybershadow.net/d/dconf2017/#/21
 struct S { string a, b, c; }
 
 static string printField(alias field)()
diff --git a/gcc/testsuite/gdc.test/runnable/xtest46.d b/gcc/testsuite/gdc.test/runnable/xtest46.d
index 4fe6b00..a66e00f 100644
--- a/gcc/testsuite/gdc.test/runnable/xtest46.d
+++ b/gcc/testsuite/gdc.test/runnable/xtest46.d
@@ -5063,7 +5063,7 @@ class Bar6847 : Foo6847
 }
 
 /***************************************************/
-// http://d.puremagic.com/issues/show_bug.cgi?id=6488
+// https://issues.dlang.org/show_bug.cgi?id=6488
 
 struct TickDuration
 {
@@ -6727,14 +6727,14 @@ void test9477()
     static bool isEq (T1, T2)(T1 s1, T2 s2) { return s1 == s2; }
     static bool isNeq(T1, T2)(T1 s1, T2 s2) { return s1 != s2; }
 
-    // Must be outside the loop due to http://d.puremagic.com/issues/show_bug.cgi?id=9748
+    // Must be outside the loop due to https://issues.dlang.org/show_bug.cgi?id=9748
     int order;
-    // Must be outside the loop due to http://d.puremagic.com/issues/show_bug.cgi?id=9756
+    // Must be outside the loop due to https://issues.dlang.org/show_bug.cgi?id=9756
     auto checkOrder(bool dyn, uint expected)()
     {
         assert(order==expected);
         order++;
-        // Use temporary ("v") to work around http://d.puremagic.com/issues/show_bug.cgi?id=9402
+        // Use temporary ("v") to work around https://issues.dlang.org/show_bug.cgi?id=9402
         auto v = cast(Select9477!(dyn, string, char[1]))"a";
         return v;
     }
@@ -6742,7 +6742,7 @@ void test9477()
     foreach (b1; Tuple9477!(false, true))
         foreach (b2; Tuple9477!(false, true))
         {
-            version (D_PIC) {} else version (D_PIE) {}  else // Work around http://d.puremagic.com/issues/show_bug.cgi?id=9754
+            version (D_PIC) {} else version (D_PIE) {}  else // Work around https://issues.dlang.org/show_bug.cgi?id=9754
             {
                 assert( isEq (cast(Select9477!(b1, string, char[0]))"" , cast(Select9477!(b2, string, char[0]))""  ));
                 assert(!isNeq(cast(Select9477!(b1, string, char[0]))"" , cast(Select9477!(b2, string, char[0]))""  ));
-- 
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