re PR tree-optimization/51238 (ICE: SIGSEGV in find_uses_to_rename_use…

re PR tree-optimization/51238 (ICE: SIGSEGV in find_uses_to_rename_use (tree-ssa-loop-manip.c:1267) with -Os -ftree-loop-distribution)

2012-12-05  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/51238
	* gcc.dg/torture/pr51238.c: New testcase.

From-SVN: r194192

gcc/testsuite/ChangeLog

 2012-12-05  Richard Biener  <rguenther@suse.de>
 
+	PR tree-optimization/51238
+	* gcc.dg/torture/pr51238.c: New testcase.
+
+2012-12-05  Richard Biener  <rguenther@suse.de>
+
 	PR tree-optimization/50222
 	* gcc.dg/torture/pr50222.c: New testcase.
 

gcc/testsuite/gcc.dg/torture/pr51238.c

+/* { dg-do compile } */
+/* { dg-options "-ftree-loop-distribution" } */
+
+extern int ia[];
+extern int ib[];
+int i;
+
+void
+foo (int l)
+{
+  while (l--)
+    {
+      i = ia[l];
+      ia[l] = ib[l] = 0;
+    }
+}