On Linux/x86_64,
acfdad706d8acca6c4ed6ef3b63c2e02f1c47881 is the first bad commit
commit acfdad706d8acca6c4ed6ef3b63c2e02f1c47881
Author: Nathan Myers <[email protected]>
Date: Fri Apr 3 23:55:39 2026 -0400
libstdc++: Use allocate_at_least in vector, string (P0401) [PR118030]
caused
FAIL: g++.dg/opt/shrink-wrapping-vector-1.C -std=gnu++98 scan-rtl-dump
pro_and_epilogue "Performing shrink-wrapping"
with GCC configured with
../../gcc/configure
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r17-603/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="dg.exp=g++.dg/opt/shrink-wrapping-vector-1.C
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="dg.exp=g++.dg/opt/shrink-wrapping-vector-1.C
--target_board='unix{-m64\ -march=cascadelake}'"
(Please directly reply to this email for question about this report.)
(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.)
