implement a couple fixme's by implementing __extension__ properly.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57806 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 5 deletions

diff --git a/lib/Parse/Parser.cpp b/lib/Parse/Parser.cpp
index 1b3adb95c0..e30e4f4fa8 100644
--- a/lib/Parse/Parser.cpp
+++ b/lib/Parse/Parser.cpp
@@ -15,6 +15,7 @@
 #include "clang/Basic/Diagnostic.h"
 #include "clang/Parse/DeclSpec.h"
 #include "clang/Parse/Scope.h"
+#include "ExtensionRAIIObject.h"
 #include "ParsePragma.h"
 using namespace clang;
 
@@ -341,11 +342,9 @@ Parser::DeclTy *Parser::ParseExternalDeclaration() {
     // TODO: Invoke action for top-level semicolon.
     return 0;
   case tok::kw___extension__: {
-    ConsumeToken();
-    // FIXME: Disable extension warnings.
-    DeclTy *RV = ParseExternalDeclaration();
-    // FIXME: Restore extension warnings.
-    return RV;
+    // __extension__ silences extension warnings in the subexpression.
+    ExtensionRAIIObject O(Diags);  // Use RAII to do this.
+    return ParseExternalDeclaration();
   }
   case tok::kw_asm: {
     ExprResult Result = ParseSimpleAsm();