On Linux/x86_64, 05b03452db6a520091aed254d3c399caed714b15 is the first bad commit commit 05b03452db6a520091aed254d3c399caed714b15 Author: Jason Merrill <ja...@redhat.com> Date: Fri Nov 6 20:41:54 2020 -0500
c++: Improve error location for class using-decl. caused FAIL: g++.dg/ubsan/pr61272.C (test for errors, line 15) FAIL: g++.dg/ubsan/pr61272.C (test for excess errors) with GCC configured with ../../gcc/configure --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r11-4852/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="ubsan.exp=g++.dg/ubsan/pr61272.C --target_board='unix{-m32}'" $ cd {build_dir}/gcc && make check RUNTESTFLAGS="ubsan.exp=g++.dg/ubsan/pr61272.C --target_board='unix{-m32\ -march=cascadelake}'" $ cd {build_dir}/gcc && make check RUNTESTFLAGS="ubsan.exp=g++.dg/ubsan/pr61272.C --target_board='unix{-m64}'" $ cd {build_dir}/gcc && make check RUNTESTFLAGS="ubsan.exp=g++.dg/ubsan/pr61272.C --target_board='unix{-m64\ -march=cascadelake}'" (Please do not reply to this email, for question about this report, contact me at skpgkp2 at gmail dot com)