https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108828
Bug ID: 108828
Summary: ivopts silencing gcc.dg/Wuse-after-free-2.c:115
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: hp at gcc dot gnu.org
Target Milestone: ---
Host: x86_64-pc-linux-gnu
Target: cris-elf
Source from r13-5978-g4f5a1198065d.
Running the test-suite for a cross to cris-elf on x86_64-pc-linux-gnu shows
among other differences for cris-elf:
Running /x/gcc/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)
Diffing tree dumps from -fdump-tree-all-all shows a suspicious difference in
the "180t.ivopts" dump compared to that of the native run; for cris-elf, IIUC
some temporary object is introduced that causes dissociation with the
pointer...or something. Anyway, "-fno-ivopts" makes the warning appear for
cris-elf.
I don't see this test-suite-failure for recent reports to gcc-testresults@ for
other targets (pru-unknown-elf, arm-unknown-linux-gnueabi,
powerpc64le-unknown-linux-gnu, aarch64-suse-linux-gnu, s390x-ibm-linux-gnu,
powerpc-ibm-aix7.2.5.0).
The test has failed since it's introduction; it's not a regression.
