https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102744
Bug ID: 102744
Summary: [12 regression] -O2 vectorization causes
Wzero-length-array-bounds-2.c to fail on arc-elf
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: law at gcc dot gnu.org
Target Milestone: ---
Starting with the patch to vectorize at -O2,
gcc.dg/Wzero-length-array-bounds-2.c has started failing on arc-elf. We're
getting an additional diagnostic:
/home/jlaw/test/gcc/gcc/testsuite/gcc.dg/Wzero-length-array-bounds-2.c:90:17:
warning: writing 8 bytes into a region of size 0 [-Wstringop-overflow=]
This may well be the same underlying issue as the other problems we're chasing
in this space, if that turns out to be the case, just mark this is a duplicate.
I haven't debugged it in any notable way. It should reproduce with just a
cross compiler.
