Diagnose use of _Thread_local as an extension when not in C11 mode.

llvm-svn: 369954
diff --git a/clang/lib/Parse/ParseDecl.cpp b/clang/lib/Parse/ParseDecl.cpp
index 3de52ce..1375409 100644
--- a/clang/lib/Parse/ParseDecl.cpp
+++ b/clang/lib/Parse/ParseDecl.cpp
@@ -3574,6 +3574,8 @@
       isStorageClass = true;
       break;
     case tok::kw__Thread_local:
+      if (!getLangOpts().C11)
+        Diag(Tok, diag::ext_c11_feature) << Tok.getName();
       isInvalid = DS.SetStorageClassSpecThread(DeclSpec::TSCS__Thread_local,
                                                Loc, PrevSpec, DiagID);
       isStorageClass = true;
@@ -3631,7 +3633,7 @@
     // alignment-specifier
     case tok::kw__Alignas:
       if (!getLangOpts().C11)
-        Diag(Tok, diag::ext_c11_alignment) << Tok.getName();
+        Diag(Tok, diag::ext_c11_feature) << Tok.getName();
       ParseAlignmentSpecifier(DS.getAttributes());
       continue;