On Linux/x86_64,
858f300727833740f74d90378a0f302d4254ef37 is the first bad commit
commit 858f300727833740f74d90378a0f302d4254ef37
Author: Nathaniel Shead <[email protected]>
Date: Sat Nov 15 15:27:13 2025 +1100
c++: Support template block-scope OpenMP user-defined reductions in modules
[PR119864]
caused
FAIL: g++.dg/modules/omp-4_a.C module-cmi p1 (gcm.cache/p1.gcm)
FAIL: g++.dg/modules/omp-4_a.C -std=c++17 (internal compiler error: in
write_function_def, at cp/module.cc:12937)
FAIL: g++.dg/modules/omp-4_a.C -std=c++17 (test for excess errors)
FAIL: g++.dg/modules/omp-4_a.C -std=c++20 (internal compiler error: in
write_function_def, at cp/module.cc:12937)
FAIL: g++.dg/modules/omp-4_a.C -std=c++20 (test for excess errors)
FAIL: g++.dg/modules/omp-4_a.C -std=c++26 (internal compiler error: in
write_function_def, at cp/module.cc:12937)
FAIL: g++.dg/modules/omp-4_a.C -std=c++26 (test for excess errors)
with GCC configured with
../../gcc/configure
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-5727/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="modules.exp=g++.dg/modules/omp-4_a.C --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="modules.exp=g++.dg/modules/omp-4_a.C --target_board='unix{-m32\
-march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="modules.exp=g++.dg/modules/omp-4_a.C --target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="modules.exp=g++.dg/modules/omp-4_a.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.)
