On Tue, May 19, 2026 at 11:29 AM Haochen Jiang <[email protected]> wrote:
> On Linux/x86_64, > > 79e29562907b454cdb867195b34cf63156d2d0cc is the first bad commit > commit 79e29562907b454cdb867195b34cf63156d2d0cc > Author: Avi Kivity <[email protected]> > Date: Thu Feb 26 19:59:41 2026 +0200 > > libstdc++: optimize std::uninitialized_move{,_n}() to memcpy when > possible [PR121789] > > caused > > FAIL: g++.dg/torture/pr118521.C -O1 (test for excess errors) > > with GCC configured with > > ../../gcc/configure > --prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r17-570/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 > > Thanks, I already got this from Linaro's bot and am working to resolve it. > To reproduce: > > $ cd {build_dir}/gcc && make check > RUNTESTFLAGS="dg-torture.exp=g++.dg/torture/pr118521.C > --target_board='unix{-m32}'" > $ cd {build_dir}/gcc && make check > RUNTESTFLAGS="dg-torture.exp=g++.dg/torture/pr118521.C > --target_board='unix{-m32\ -march=cascadelake}'" > $ cd {build_dir}/gcc && make check > RUNTESTFLAGS="dg-torture.exp=g++.dg/torture/pr118521.C > --target_board='unix{-m64}'" > $ cd {build_dir}/gcc && make check > RUNTESTFLAGS="dg-torture.exp=g++.dg/torture/pr118521.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.) >
