d: Merge upstream dmd c2274e56a (PR96250).

1. Fixes an ICE in the front-end if a struct symbol were to appear twice
in the compilation unit.

2. Fixes a rejects-valid bug in the front-end where `(symbol)' was being
resolved as a `var' expression, instead of `this.var'.

Reviewed-on: https://github.com/dlang/dmd/pull/11436
	     https://github.com/dlang/dmd/pull/11439

gcc/d/ChangeLog:

	PR d/96250
	* dmd/MERGE: Merge upstream dmd c2274e56a.

9 files changed, 110 insertions, 1 deletions

diff --git a/gcc/testsuite/gdc.test/compilable/b9490.d b/gcc/testsuite/gdc.test/compilable/b9490.d
new file mode 100644
index 0000000..d0148b1
--- /dev/null
+++ b/gcc/testsuite/gdc.test/compilable/b9490.d
@@ -0,0 +1,39 @@
+// https://issues.dlang.org/show_bug.cgi?id=9490
+class A
+{
+    int[1] arr;
+
+    this()
+    {
+        assert(arr.length);
+        assert((arr).length);
+    }
+}
+
+class C
+{
+    struct Foo { int a; void funcToo(){} }
+    Foo foo;
+
+    auto get(){return foo;}
+
+    void test()
+    {
+        // Error: need 'this' to access member a
+        (foo).a = 1;
+        (foo).funcToo();
+        (get()).a = 2;
+    }
+}
+
+struct S { int i; }
+struct S1 { S s; }
+void f(int) { }
+
+void main()
+{
+    S1 s1;
+    f(s1.s.tupleof); // OK
+    f((s1.s).tupleof); // Error: need 'this' to access member s
+}
+
diff --git a/gcc/testsuite/gdc.test/compilable/ice14739.d b/gcc/testsuite/gdc.test/compilable/ice14739.d
new file mode 100644
index 0000000..cc90da6
--- /dev/null
+++ b/gcc/testsuite/gdc.test/compilable/ice14739.d
@@ -0,0 +1,19 @@
+// REQUIRED_ARGS: -o-
+
+void main(string[] args)
+{
+    immutable int a;
+    immutable int b;
+    S!a sa;
+    S!b sb;
+    C!a ca;
+    C!b cb;
+}
+
+struct S(alias a)
+{
+}
+
+class C(alias a)
+{
+}
diff --git a/gcc/testsuite/gdc.test/fail_compilation/fail17492.d b/gcc/testsuite/gdc.test/fail_compilation/fail17492.d
index e45c2e5..80e9e2a 100644
--- a/gcc/testsuite/gdc.test/fail_compilation/fail17492.d
+++ b/gcc/testsuite/gdc.test/fail_compilation/fail17492.d
@@ -1,6 +1,7 @@
 /* TEST_OUTPUT:
 ---
-fail_compilation/fail17492.d(19): Error: class fail17492.C.testE.I already exists at fail_compilation/fail17492.d(12). Perhaps in another function with the same name?
+fail_compilation/fail17492.d(20): Error: class `fail17492.C.testE.I` already exists at fail17492.d(13). Perhaps in another function with the same name?
+fail_compilation/fail17492.d(37): Error: struct `fail17492.S.testE.I` already exists at fail17492.d(30). Perhaps in another function with the same name?
 ---
 https://issues.dlang.org/show_bug.cgi?id=17492
 */
@@ -21,3 +22,20 @@ class C
         }
     }
 }
+
+class S
+{
+    void testE()
+    {
+        struct I
+        {
+        }
+    }
+
+    void testE()
+    {
+        struct I
+        {
+        }
+    }
+}
diff --git a/gcc/testsuite/gdc.test/fail_compilation/ice21060.d b/gcc/testsuite/gdc.test/fail_compilation/ice21060.d
new file mode 100644
index 0000000..d33889c
--- /dev/null
+++ b/gcc/testsuite/gdc.test/fail_compilation/ice21060.d
@@ -0,0 +1,15 @@
+/*
+EXTRA_FILES: imports/ice21060a/package.d imports/ice21060b/package.d imports/ice21060c/package.d imports/ice21060d/package.d
+TEST_OUTPUT:
+---
+fail_compilation/imports/ice21060b/package.d(3): Error: struct `imports.ice21060d.P21060` already exists at fail_compilation/imports/ice21060d/package.d(3). Perhaps in another function with the same name?
+---
+*/
+struct S21060
+{
+    void print()
+    {
+        import imports.ice21060a;
+        import imports.ice21060b;
+    }
+}
diff --git a/gcc/testsuite/gdc.test/fail_compilation/imports/ice21060a/package.d b/gcc/testsuite/gdc.test/fail_compilation/imports/ice21060a/package.d
new file mode 100644
index 0000000..b046aeb
--- /dev/null
+++ b/gcc/testsuite/gdc.test/fail_compilation/imports/ice21060a/package.d
@@ -0,0 +1 @@
+import imports.ice21060c;
diff --git a/gcc/testsuite/gdc.test/fail_compilation/imports/ice21060b/package.d b/gcc/testsuite/gdc.test/fail_compilation/imports/ice21060b/package.d
new file mode 100644
index 0000000..a806fd0
--- /dev/null
+++ b/gcc/testsuite/gdc.test/fail_compilation/imports/ice21060b/package.d
@@ -0,0 +1,5 @@
+module imports.ice21060d;
+
+struct P21060
+{
+}
diff --git a/gcc/testsuite/gdc.test/fail_compilation/imports/ice21060c/package.d b/gcc/testsuite/gdc.test/fail_compilation/imports/ice21060c/package.d
new file mode 100644
index 0000000..cc6f74e
--- /dev/null
+++ b/gcc/testsuite/gdc.test/fail_compilation/imports/ice21060c/package.d
@@ -0,0 +1 @@
+import imports.ice21060d;
diff --git a/gcc/testsuite/gdc.test/fail_compilation/imports/ice21060d/package.d b/gcc/testsuite/gdc.test/fail_compilation/imports/ice21060d/package.d
new file mode 100644
index 0000000..a806fd0
--- /dev/null
+++ b/gcc/testsuite/gdc.test/fail_compilation/imports/ice21060d/package.d
@@ -0,0 +1,5 @@
+module imports.ice21060d;
+
+struct P21060
+{
+}
diff --git a/gcc/testsuite/gdc.test/runnable/b16278.d b/gcc/testsuite/gdc.test/runnable/b16278.d
new file mode 100644
index 0000000..a0a422d
--- /dev/null
+++ b/gcc/testsuite/gdc.test/runnable/b16278.d
@@ -0,0 +1,6 @@
+// REQUIRED_ARGS: -main
+class A()
+{
+    static struct S { A a; }
+}
+enum e = is(A!());