On Linux/x86_64,
5d4c555d8b716d0899530281fd1d9b31df74d9f4 is the first bad commit
commit 5d4c555d8b716d0899530281fd1d9b31df74d9f4
Author: Jason Merrill <[email protected]>
Date: Wed Nov 11 10:25:25 2026 -0500
c++/contracts: rework constexpr handling
caused
FAIL: g++.dg/contracts/cpp26/non-const1.C -std=c++20 (test for excess errors)
FAIL: g++.dg/contracts/cpp26/non-const1.C -std=c++98 (test for excess errors)
with GCC configured with
../../gcc/configure
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r17-6180/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/contracts/cpp26/non-const1.C
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="dg.exp=g++.dg/contracts/cpp26/non-const1.C
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="dg.exp=g++.dg/contracts/cpp26/non-const1.C
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="dg.exp=g++.dg/contracts/cpp26/non-const1.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.)
