On Wed, 29 Oct 2025 at 20:04, Haochen Jiang <[email protected]> wrote: > > On Linux/x86_64, > > c55c1de3a9adb241e3c0dabd7d1edd8ebe9c065f is the first bad commit > commit c55c1de3a9adb241e3c0dabd7d1edd8ebe9c065f > Author: Jonathan Wakely <[email protected]> > Date: Tue Oct 28 12:15:52 2025 +0000 > > libstdc++: Simplify std::regex_traits::value > > caused > > FAIL: g++.dg/warn/uninit-pr105562.C -std=gnu++11 (test for excess errors) > FAIL: g++.dg/warn/uninit-pr105562.C -std=gnu++17 (test for excess errors) > FAIL: g++.dg/warn/uninit-pr105562.C -std=gnu++26 (test for excess errors) > > with GCC configured with > > ../../gcc/configure > --prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-4709/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/warn/uninit-pr105562.C > --target_board='unix{-m32}'" > $ cd {build_dir}/gcc && make check > RUNTESTFLAGS="dg.exp=g++.dg/warn/uninit-pr105562.C --target_board='unix{-m32\ > -march=cascadelake}'" > $ cd {build_dir}/gcc && make check > RUNTESTFLAGS="dg.exp=g++.dg/warn/uninit-pr105562.C > --target_board='unix{-m64}'" > $ cd {build_dir}/gcc && make check > RUNTESTFLAGS="dg.exp=g++.dg/warn/uninit-pr105562.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.)
Fixed at r16-4714-gcc78f8523832d6
