Allow void blocks to return witn a void expression in

c-mode to match behavior with void functions in c. Issue
warning with -pedantic. // rdar://11069896


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153200 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 2 deletions

diff --git a/lib/Sema/SemaStmt.cpp b/lib/Sema/SemaStmt.cpp
index ef453f5c6a..333f6dd255 100644
--- a/lib/Sema/SemaStmt.cpp
+++ b/lib/Sema/SemaStmt.cpp
@@ -1886,8 +1886,13 @@ Sema::ActOnCapScopeReturnStmt(SourceLocation ReturnLoc, Expr *RetValExp) {
         !(getLangOpts().CPlusPlus &&
           (RetValExp->isTypeDependent() ||
            RetValExp->getType()->isVoidType()))) {
-      Diag(ReturnLoc, diag::err_return_block_has_expr);
-      RetValExp = 0;
+      if (!getLangOpts().CPlusPlus &&
+          RetValExp->getType()->isVoidType())
+        Diag(ReturnLoc, diag::ext_return_has_void_expr) << "" << 2;
+      else {
+        Diag(ReturnLoc, diag::err_return_block_has_expr);
+        RetValExp = 0;
+      }
     }
   } else if (!RetValExp) {
     return StmtError(Diag(ReturnLoc, diag::err_block_return_missing_expr));