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, 13 insertions, 3 deletions

diff --git a/gcc/d/dmd/statementsem.d b/gcc/d/dmd/statementsem.d
index 2916bbc38dd..c1c2dc92e12 100644
--- a/gcc/d/dmd/statementsem.d
+++ b/gcc/d/dmd/statementsem.d
@@ -2829,10 +2829,20 @@ package (dmd) extern (C++) final class StatementSemanticVisitor : Visitor
             rs.error("`return` statements cannot be in contracts");
             errors = true;
         }
-        if (sc.os && sc.os.tok != TOK.onScopeFailure)
+        if (sc.os)
         {
-            rs.error("`return` statements cannot be in `%s` bodies", Token.toChars(sc.os.tok));
-            errors = true;
+            // @@@DEPRECATED_2.112@@@
+            // Deprecated in 2.100, transform into an error in 2.112
+            if (sc.os.tok == TOK.onScopeFailure)
+            {
+                rs.deprecation("`return` statements cannot be in `scope(failure)` bodies.");
+                deprecationSupplemental(rs.loc, "Use try-catch blocks for this purpose");
+            }
+            else
+            {
+                rs.error("`return` statements cannot be in `%s` bodies", Token.toChars(sc.os.tok));
+                errors = true;
+            }
         }
         if (sc.tf)
         {