PR c/18079 (noinline and always_inline are incompatible)

[Jan Hubicka]

Hi,
I've run across this older bug that is trivial to fix.
Bootstrapped/regtested i686-linux, OK?

__attribute__ ((always_inline))
__attribute__ ((noinline))
void t()
{
}
__attribute__ ((noinline))
__attribute__ ((always_inline))
void q()
{
}
	PR c/18079
	* c-common.c (handle_noinline_attribute,
	handle_always_inline_attribute): Noinline and always_inline are
	incompatible.
Index: c-common.c
===================================================================
--- c-common.c	(revision 143984)
+++ c-common.c	(working copy)
@@ -5261,7 +5261,11 @@ handle_noinline_attribute (tree *node, t
 			   int ARG_UNUSED (flags), bool *no_add_attrs)
 {
   if (TREE_CODE (*node) == FUNCTION_DECL)
-    DECL_UNINLINABLE (*node) = 1;
+    {
+      if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (*node)))
+        error ("%qD is declared both noinline and always_inline", *node);
+      DECL_UNINLINABLE (*node) = 1;
+    }
   else
     {
       warning (OPT_Wattributes, "%qE attribute ignored", name);
@@ -5282,6 +5286,8 @@ handle_always_inline_attribute (tree *no
 {
   if (TREE_CODE (*node) == FUNCTION_DECL)
     {
+      if (lookup_attribute ("noinline", DECL_ATTRIBUTES (*node)))
+	error ("%qD is declared both noinline and always_inline", *node);
       /* Set the attribute and mark it for disregarding inline
 	 limits.  */
       DECL_DISREGARD_INLINE_LIMITS (*node) = 1;