d: Merge upstream dmd 76e3b41375, druntime 1462ebd1, phobos 5fef0d28f.

Updates D language version to v2.100.1.

D front-end changes:

    - Fix delegate literal with inferred return value that requires
      following alias-this to not use class cast.
    - Fix internal error on variadic template type instantiated with two
      arrays of classes.
    - `scope(failure)' blocks that contain `return' statements are now
      deprecated.
    - Fix regression where wrong cast was inserted for ternary operator
      and non-int enums.
    - Fix internal error in code generation trying to reference
      _d_arraysetctor.
    - Fix memory corruption when array literal is passed to map in
      lambda, then returned from nested function.
    - Generate invariant id on the basis of location rather than a
      global counter.
    - Make `noreturn' conversions work.
    - Fix segfault when `.stringof' of template alias overloaded with
      function accessed by trait.
    - Empty array literal passed to scope param not 'falsey' anymore.

Phobos changes:

    - Avoid copying ranges in std.algorithm.comparison.equal.

gcc/d/ChangeLog:

	* dmd/MERGE: Merge upstream dmd 76e3b41375.
	* dmd/VERSION: Bump version to v2.100.1.
	* decl.cc (DeclVisitor::visit (VarDeclaration *)): Evaluate RHS
	  of noreturn declaration expressions first.
	* expr.cc (ExprVisitor::visit (AssignExp *)): Don't generate
	  assignment for noreturn types.

libphobos/ChangeLog:

	* libdruntime/MERGE: Merge upstream druntime 1462ebd1.
	* src/MERGE: Merge upstream phobos 5fef0d28f.

1 files changed, 22 insertions, 0 deletions

diff --git a/gcc/testsuite/gdc.test/runnable/test23234.d b/gcc/testsuite/gdc.test/runnable/test23234.d
new file mode 100644
index 00000000000..7872aa76dfe
--- /dev/null
+++ b/gcc/testsuite/gdc.test/runnable/test23234.d
@@ -0,0 +1,22 @@
+// https://issues.dlang.org/show_bug.cgi?id=23234
+
+class Bar
+{
+}
+
+class Foo
+{
+    Bar get() { return new Bar; }
+    alias get this;
+}
+
+void main()
+{
+    auto foo = new Foo;
+    void test(Bar delegate() dg)
+    {
+        assert(dg() !is null);
+    }
+
+    test(() => foo);
+}