On Linux/x86_64,

e96e1bb69c7b46db18e747ee379a62681bc8c82d is the first bad commit
commit e96e1bb69c7b46db18e747ee379a62681bc8c82d
Author: Jason Merrill <ja...@redhat.com>
Date:   Fri Feb 14 10:53:01 2025 +0100

    c++: extended temp cleanups [PR118856]

caused

FAIL: g++.dg/asan/pr118763.C   -O0  execution test
FAIL: g++.dg/asan/pr118763.C   -O1  execution test
FAIL: g++.dg/asan/pr118763.C   -Os  execution test

with GCC configured with

../../gcc/configure 
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r15-7532/usr 
--enable-clocale=gnu --with-system-zlib --with-demangler-in-ld 
--with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl 
--enable-libmpx x86_64-linux --disable-bootstrap

To reproduce:

$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="asan.exp=g++.dg/asan/pr118763.C --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="asan.exp=g++.dg/asan/pr118763.C --target_board='unix{-m32\ 
-march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="asan.exp=g++.dg/asan/pr118763.C --target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="asan.exp=g++.dg/asan/pr118763.C --target_board='unix{-m64\ 
-march=cascadelake}'"

(Please do not reply to this email, for question about this report, contact me 
at haochen dot jiang at intel.com.)
(If you met problems with cascadelake related, disabling AVX512F in command 
line might save that.)
(However, please make sure that there is no potential problems with AVX512.)

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