On Linux/x86_64,
df483ebd24689a3bebfae2089637a00eca0e5a12 is the first bad commit
commit df483ebd24689a3bebfae2089637a00eca0e5a12
Author: Jonathan Wakely <[email protected]>
Date: Mon Feb 26 13:17:13 2024 +0000
libstdc++: Add nodiscard in <algorithm>
caused
FAIL: g++.dg/torture/pr104601.C -O0 (test for excess errors)
FAIL: g++.dg/torture/pr104601.C -O1 (test for excess errors)
FAIL: g++.dg/torture/pr104601.C -O2 -flto -fno-use-linker-plugin
-flto-partition=none (test for excess errors)
FAIL: g++.dg/torture/pr104601.C -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects (test for excess errors)
FAIL: g++.dg/torture/pr104601.C -O2 (test for excess errors)
FAIL: g++.dg/torture/pr104601.C -O3 -g (test for excess errors)
FAIL: g++.dg/torture/pr104601.C -Os (test for excess errors)
with GCC configured with
../../gcc/configure
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r14-9478/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-torture.exp=g++.dg/torture/pr104601.C
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="dg-torture.exp=g++.dg/torture/pr104601.C
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="dg-torture.exp=g++.dg/torture/pr104601.C
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="dg-torture.exp=g++.dg/torture/pr104601.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.)
