From 8c58f4b798177d419c5af37b7e23c490849f2d45 Mon Sep 17 00:00:00 2001 From: Hans-Peter Nilsson Date: Fri, 24 Feb 2023 17:22:02 +0100 Subject: [PATCH] testsuite: Add -fno-ivopts to gcc.dg/Wuse-after-free-2.c, PR108828 For cris-elf before this patch, ever since it was added, this test gets: Running /x/gcc/testsuite/gcc.dg/dg.exp ... FAIL: gcc.dg/Wuse-after-free-2.c (test for warnings, line 115) FAIL: gcc.dg/Wuse-after-free-2.c (test for warnings, line 116) and comparing tree dumps with a native x86_64-pc-linux-gnu run shows a suspicious difference in the "180t.ivopts" dump. Indeed -fno-ivopts makes the warning appear for cris-elf too. It was suggested to simply add -fno-ivopts to the test-flags, like before -fno-tree-loop-distribute-patterns was added; thus. PR tree-optimization/108828 * gcc.dg/Wuse-after-free-2.c: Add -fno-ivopts. --- gcc/testsuite/gcc.dg/Wuse-after-free-2.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/gcc/testsuite/gcc.dg/Wuse-after-free-2.c b/gcc/testsuite/gcc.dg/Wuse-after-free-2.c index 68ec758..ebc0516 100644 --- a/gcc/testsuite/gcc.dg/Wuse-after-free-2.c +++ b/gcc/testsuite/gcc.dg/Wuse-after-free-2.c @@ -1,6 +1,6 @@ /* PR middle-end/104232 - spurious -Wuse-after-free after conditional free { dg-do compile } - { dg-options "-O2 -Wall -fno-tree-loop-distribute-patterns" } */ + { dg-options "-O2 -Wall -fno-tree-loop-distribute-patterns -fno-ivopts" } */ void free (void*); @@ -108,7 +108,8 @@ int warn_cond_loop (char *p) char *q = p; /* -fno-tree-loop-distribute-patterns ensures this does not get converted - into rawmemchr (making q and p unrelated). */ + into rawmemchr (making q and p unrelated). Also, -fno-ivopts is required + for some targets, to not lose track of the pointer. */ while (*q) ++q; -- 2.7.4