commit 7278465e24b3d5a399ae2474f12870a91ba6af62
Author: Marek Polacek <polacek@redhat.com>
Date:   Fri Oct 17 21:02:54 2014 +0000

    re PR c/63567 (Linux kernel build error due to non-static initializers)
    
            PR c/63567
            * c-typeck.c (digest_init): Allow initializing objects with static
            storage duration with compound literals even in C99 and add pedwarn
            for it.
    
            * gcc.dg/pr61096-1.c: Change dg-error into dg-warning.
            * gcc.dg/pr63567-1.c: New test.
            * gcc.dg/pr63567-2.c: New test.
    
    From-SVN: r216416

Index: gcc/c/c-typeck.c
===================================================================
--- gcc/c/c-typeck.c	(revision 235439)
+++ gcc/c/c-typeck.c	(working copy)
@@ -6223,13 +6223,15 @@ digest_init (location_t init_loc, tree t
 	inside_init = convert (type, inside_init);
 
       if (require_constant
-	  && (code == VECTOR_TYPE || !flag_isoc99)
 	  && TREE_CODE (inside_init) == COMPOUND_LITERAL_EXPR)
 	{
 	  /* As an extension, allow initializing objects with static storage
 	     duration with compound literals (which are then treated just as
 	     the brace enclosed list they contain).  Also allow this for
 	     vectors, as we can only assign them with compound literals.  */
+	  if (flag_isoc99 && code != VECTOR_TYPE)
+	    pedwarn_init (init_loc, OPT_Wpedantic, "initializer element "
+			  "is not constant");
 	  tree decl = COMPOUND_LITERAL_EXPR_DECL (inside_init);
 	  inside_init = DECL_INITIAL (decl);
 	}