[backport from gcc-4.7/trunk r184436 <mikpe@it.uu.se>]

gcc/

2012-02-21  Richard Guenther  <rguenther@suse.de>

	PR middle-end/52314
	* gimplify.c (create_tmp_from_val): Use the main variant type
	for the type of the temporary we create.

--- gcc-4.6.3/gcc/gimplify.c.~1~	2011-07-07 14:50:03.000000000 +0200
+++ gcc-4.6.3/gcc/gimplify.c	2012-03-10 11:56:40.000000000 +0100
@@ -492,7 +492,8 @@ create_tmp_reg (tree type, const char *p
 static inline tree
 create_tmp_from_val (tree val)
 {
-  return create_tmp_var (TREE_TYPE (val), get_name (val));
+  /* Drop all qualifiers and address-space information from the value type.  */
+  return create_tmp_var (TYPE_MAIN_VARIANT (TREE_TYPE (val)), get_name (val));
 }
 
 /* Create a temporary to hold the value of VAL.  If IS_FORMAL, try to reuse