vla-1.c (main): Use result of f1 to avoid optimizing it away if promoted to const.

2011-03-16  Richard Guenther  <rguenther@suse.de>

	* gcc.dg/guality/vla-1.c (main): Use result of f1 to avoid
	optimizing it away if promoted to const.

From-SVN: r171050

gcc/testsuite/ChangeLog

 2011-03-16  Richard Guenther  <rguenther@suse.de>
 
+	* gcc.dg/guality/vla-1.c (main): Use result of f1 to avoid
+	optimizing it away if promoted to const.
+
+2011-03-16  Richard Guenther  <rguenther@suse.de>
+
 	PR tree-optimization/48149
 	* gcc.dg/fold-complex-1.c: New testcase.
 

gcc/testsuite/gcc.dg/guality/vla-1.c

@@ -28,9 +28,10 @@ f2 (int i)
 int
 main ()
 {
+  volatile int j;
   int i = 5;
   asm volatile ("" : "=r" (i) : "0" (i));
-  f1 (i);
+  j = f1 (i);
   f2 (i);
   return 0;
 }