d: Merge upstream dmd, druntime 643b1261bb, phobos 1c98326e7

D front-end changes:

    - Suggested preview switches now give gdc flags (PR109681).
    - `new S[10]' is now lowered to `_d_newarrayT!S(10)'.

D runtime changes:

    - Runtime compiler library functions `_d_newarrayU', `_d_newarrayT',
      `_d_newarrayiT' have been converted to templates.

Phobos changes:

    - Add new `std.traits.Unshared' template.

gcc/d/ChangeLog:

	* dmd/MERGE: Merge upstream dmd 643b1261bb.
	* d-attribs.cc (build_attributes): Update for new front-end interface.
	* d-lang.cc (d_post_options): Likewise.
	* decl.cc (layout_class_initializer): Likewise.

libphobos/ChangeLog:

	* libdruntime/MERGE: Merge upstream druntime 643b1261bb.
	* libdruntime/Makefile.am (DRUNTIME_DSOURCES_FREEBSD): Add
	core/sys/freebsd/ifaddrs.d, core/sys/freebsd/net/if_dl.d,
	core/sys/freebsd/sys/socket.d, core/sys/freebsd/sys/types.d.
	(DRUNTIME_DSOURCES_LINUX): Add core/sys/linux/linux/if_arp.d,
	core/sys/linux/linux/if_packet.d.
	* libdruntime/Makefile.in: Regenerate.
	* src/MERGE: Merge upstream phobos 1c98326e7.

1 files changed, 41 insertions, 0 deletions

diff --git a/libphobos/src/std/traits.d b/libphobos/src/std/traits.d
index aa69aac..2e7a4f6 100644
--- a/libphobos/src/std/traits.d
+++ b/libphobos/src/std/traits.d
@@ -132,6 +132,7 @@
  *           $(LREF PointerTarget)
  *           $(LREF Signed)
  *           $(LREF Unconst)
+ *           $(LREF Unshared)
  *           $(LREF Unqual)
  *           $(LREF Unsigned)
  *           $(LREF ValueType)
@@ -7848,6 +7849,46 @@ else
     static assert(is(Unconst!ImmIntArr == immutable(int)[]));
 }
 
+/++
+    Removes `shared` qualifier, if any, from type `T`.
+
+    Note that while `immutable` is implicitly `shared`, it is unaffected by
+    Unshared. Only explict `shared` is removed.
+  +/
+template Unshared(T)
+{
+    static if (is(T == shared U, U))
+        alias Unshared = U;
+    else
+        alias Unshared = T;
+}
+
+///
+@safe unittest
+{
+    static assert(is(Unshared!int == int));
+    static assert(is(Unshared!(const int) == const int));
+    static assert(is(Unshared!(immutable int) == immutable int));
+
+    static assert(is(Unshared!(shared int) == int));
+    static assert(is(Unshared!(shared(const int)) == const int));
+
+    static assert(is(Unshared!(shared(int[])) == shared(int)[]));
+}
+
+@safe unittest
+{
+    static assert(is(Unshared!(                   int) == int));
+    static assert(is(Unshared!(             const int) == const int));
+    static assert(is(Unshared!(       inout       int) == inout int));
+    static assert(is(Unshared!(       inout const int) == inout const int));
+    static assert(is(Unshared!(shared             int) == int));
+    static assert(is(Unshared!(shared       const int) == const int));
+    static assert(is(Unshared!(shared inout       int) == inout int));
+    static assert(is(Unshared!(shared inout const int) == inout const int));
+    static assert(is(Unshared!(         immutable int) == immutable int));
+}
+
 version (StdDdoc)
 {
     /**