Fix PR4027 + rdar://6808859, we were rejecting implicit casts of

aggregates even though we already accept explicit ones.  Easy fix.

llvm-svn: 69661

2 files changed, 7 insertions, 0 deletions

diff --git a/clang/lib/AST/Expr.cpp b/clang/lib/AST/Expr.cpp
index 46dce59d3e9..970d2951921 100644
--- a/clang/lib/AST/Expr.cpp
+++ b/clang/lib/AST/Expr.cpp
@@ -1064,6 +1064,7 @@ bool Expr::isConstantInitializer(ASTContext &Ctx) const {
       return Exp->getSubExpr()->isConstantInitializer(Ctx);
     break;
   }
+  case ImplicitCastExprClass:
   case CStyleCastExprClass:
     // Handle casts with a destination that's a struct or union; this
     // deals with both the gcc no-op struct cast extension and the
diff --git a/clang/test/Sema/const-eval.c b/clang/test/Sema/const-eval.c
index dd91c482365..08daa5f8d6e 100644
--- a/clang/test/Sema/const-eval.c
+++ b/clang/test/Sema/const-eval.c
@@ -55,3 +55,9 @@ EVAL_EXPR(26, (_Complex double)0 ? -1 : 1)
 EVAL_EXPR(27, (_Complex int)0 ? -1 : 1)
 EVAL_EXPR(28, (_Complex double)1 ? 1 : -1)
 EVAL_EXPR(29, (_Complex int)1 ? 1 : -1)
+
+
+// PR4027 + rdar://6808859
+struct a { int x, y };
+static struct a V2 = (struct a)(struct a){ 1, 2};
+static const struct a V1 = (struct a){ 1, 2};