re PR c/48731 (regression: __attribute__((flatten)) produces error with function…

re PR c/48731 (regression: __attribute__((flatten)) produces error with function calling variadic functions)

2011-04-26  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/48731
	* gcc.dg/torture/pr48731.c: New testcase.

From-SVN: r172964

gcc/testsuite/ChangeLog

 2011-04-26  Richard Guenther  <rguenther@suse.de>
 
+	PR tree-optimization/48731
+	* gcc.dg/torture/pr48731.c: New testcase.
+
+2011-04-26  Richard Guenther  <rguenther@suse.de>
+
 	PR testsuite/48753
 	* gcc.dg/tree-prof/val-prof-2.c: Adjust.
 

gcc/testsuite/gcc.dg/torture/pr48731.c

+/* { dg-do compile } */
+
+#include <stdarg.h>
+
+int blah(int a, ...)
+{
+  va_list va;
+  va_start(va,a);
+  if (a == 0)
+    return -1;
+  else 
+    {
+      int i;
+      for (i = 0; i < a; i++)
+	va_arg(va,int);
+      return va_arg(va,int);
+    }
+}
+
+__attribute((flatten))
+int blah2(int b, int c)
+{
+  return blah(2, b, c);
+}