tree-ssa-structalias.c (get_constraint_for_1): Constants only point to nonlocal, not anything.

2010-10-12  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-structalias.c (get_constraint_for_1): Constants
	only point to nonlocal, not anything.

From-SVN: r165372

gcc/ChangeLog

+2010-10-12  Richard Guenther  <rguenther@suse.de>
+
+	* tree-ssa-structalias.c (get_constraint_for_1): Constants
+	only point to nonlocal, not anything.
+
 2010-10-11  Hariharan Sandanagobalane  <hariharan@picochip.com>
 
 	* config/picochip/picochip.c (TARGET_EXCEPT_UNWIND_INFO): Use sjlj

gcc/tree-ssa-structalias.c

@@ -3335,7 +3335,7 @@ get_constraint_for_1 (tree t, VEC (ce_s, heap) **results, bool address_p,
       if (flag_delete_null_pointer_checks)
 	temp.var = nothing_id;
       else
-	temp.var = anything_id;
+	temp.var = nonlocal_id;
       temp.type = ADDRESSOF;
       temp.offset = 0;
       VEC_safe_push (ce_s, heap, *results, &temp);
@@ -3428,6 +3428,15 @@ get_constraint_for_1 (tree t, VEC (ce_s, heap) **results, bool address_p,
 	get_constraint_for_ssa_var (t, results, address_p);
 	return;
       }
+    case tcc_constant:
+      {
+	/* We cannot refer to automatic variables through constants.  */ 
+	temp.type = ADDRESSOF;
+	temp.var = nonlocal_id;
+	temp.offset = 0;
+	VEC_safe_push (ce_s, heap, *results, &temp);
+	return;
+      }
     default:;
     }