Testcase for PR66974

Message ID alpine.LSU.2.20.1712141617220.12252@zhemvz.fhfr.qr
State New
Headers show
Series
  • Testcase for PR66974
Related show

Commit Message

Richard Biener Dec. 14, 2017, 3:17 p.m.
Committed.

2017-12-14  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/66974
	* gcc.dg/Warray-bounds-24.c: New testcase.

Patch

Index: gcc/testsuite/gcc.dg/Warray-bounds-24.c
===================================================================
--- gcc/testsuite/gcc.dg/Warray-bounds-24.c	(nonexistent)
+++ gcc/testsuite/gcc.dg/Warray-bounds-24.c	(working copy)
@@ -0,0 +1,15 @@ 
+/* { dg-do compile } */
+/* { dg-options "-O3 -Warray-bounds" } */
+
+int foo(unsigned order)
+{
+  int c[3] = {1, 2, 3};
+  unsigned i, j;
+  for (i = 1; i < order; i++) {
+      for (j = 0; j < i / 2; j++) {
+	  c[j] += c[i] * c[i-j-1]; /* { dg-bogus "array bounds" } */
+	  c[i-j-1] += c[i] * c[j]; /* { dg-bogus "array bounds" } */
+      }
+  }
+  return c[0];
+}