From d6de65740d777c48fb41bae317a7f1cb17f36aff Mon Sep 17 00:00:00 2001
From: Bill Wendling <isanbard@gmail.com>
Date: Sat, 2 Jun 2007 09:40:07 +0000
Subject: [PATCH] Submitted by: Bill Wendling

- Added C99 reference to why "auto" and "register" cannot be used as a
  storage class specifier for file scoped variable declarations.

llvm-svn: 39557
---
 clang/Sema/SemaDecl.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/clang/Sema/SemaDecl.cpp b/clang/Sema/SemaDecl.cpp
index 2963c8f4e4b4..a30944ba92c2 100644
--- a/clang/Sema/SemaDecl.cpp
+++ b/clang/Sema/SemaDecl.cpp
@@ -331,7 +331,8 @@ Sema::ParseDeclarator(Scope *S, Declarator &D, ExprTy *Init,
           return 0;
         }
       }
-      // FIXME: Find C99 spec reference
+      // C99 6.9p2: The storage-class specifiers auto and register shall not
+      // appear in the declaration specifiers in an external declaration.
       if (SC == VarDecl::Auto || SC == VarDecl::Register) {
         Diag(D.getIdentifierLoc(), diag::err_typecheck_sclass_fscope,
              R.getAsString());