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[PATCH] Testcase for PR66974
- From: Richard Biener <rguenther at suse dot de>
- To: gcc-patches at gcc dot gnu dot org
- Date: Thu, 14 Dec 2017 16:17:47 +0100 (CET)
- Subject: [PATCH] Testcase for PR66974
- Authentication-results: sourceware.org; auth=none
Committed.
2017-12-14 Richard Biener <rguenther@suse.de>
PR tree-optimization/66974
* gcc.dg/Warray-bounds-24.c: New testcase.
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];
+}