Re: [r17-2320 Regression] FAIL: libgomp.fortran/teams2.f90 -O (test for excess errors) on Linux/x86_64

Jerry D via Gcc-regression <[email protected]> Mon, 13 Jul 2026 13:46:18 -0700
Newsgroups gmane.comp.gcc.regression,gmane.comp.gcc.patches
Message-ID <[email protected]>
On 7/13/26 2:24 AM, Haochen Jiang wrote:
> On Linux/x86_64,
> 
> f935a7a9013d0748ba1f42dc532df3d278707bf6 is the first bad commit
> commit f935a7a9013d0748ba1f42dc532df3d278707bf6
> Author: Jerry DeLisle <[email protected]>
> Date:   Thu Jul 9 19:24:49 2026 -0700
> 
>      fortran: [PR126170] Fix LTO ICE in copy_function_or_variable
> 
> caused
> 
> FAIL: libgomp.fortran/allocate-1.f90   -O0  (test for excess errors)
> FAIL: libgomp.fortran/allocate-1.f90   -O1  (test for excess errors)
> FAIL: libgomp.fortran/allocate-1.f90   -O2  (test for excess errors)
> FAIL: libgomp.fortran/allocate-1.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
> FAIL: libgomp.fortran/allocate-1.f90   -O3 -g  (test for excess errors)
> FAIL: libgomp.fortran/allocate-1.f90   -Os  (test for excess errors)
> FAIL: libgomp.fortran/cancel-do-2.f90   -O0  (test for excess errors)
> FAIL: libgomp.fortran/cancel-do-2.f90   -O1  (test for excess errors)
> FAIL: libgomp.fortran/cancel-do-2.f90   -O2  (test for excess errors)
> FAIL: libgomp.fortran/cancel-do-2.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
> FAIL: libgomp.fortran/cancel-do-2.f90   -O3 -g  (test for excess errors)
> FAIL: libgomp.fortran/cancel-do-2.f90   -Os  (test for excess errors)
> FAIL: libgomp.fortran/task1.f90   -O0  (test for excess errors)
> FAIL: libgomp.fortran/task1.f90   -O1  (test for excess errors)
> FAIL: libgomp.fortran/task1.f90   -O2  (test for excess errors)
> FAIL: libgomp.fortran/task1.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  (test for excess errors)
> FAIL: libgomp.fortran/task1.f90   -O3 -g  (test for excess errors)
> FAIL: libgomp.fortran/task1.f90   -Os  (test for excess errors)
> FAIL: libgomp.fortran/teams2.f90   -O  (test for excess errors)
> 
> with GCC configured with
> 
> ../../gcc/configure --prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r17-2320/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}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="fortran.exp=libgomp.fortran/allocate-1.f90 --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="fortran.exp=libgomp.fortran/allocate-1.f90 --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="fortran.exp=libgomp.fortran/allocate-1.f90 --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="fortran.exp=libgomp.fortran/allocate-1.f90 --target_board='unix{-m64\ -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="fortran.exp=libgomp.fortran/cancel-do-2.f90 --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="fortran.exp=libgomp.fortran/cancel-do-2.f90 --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="fortran.exp=libgomp.fortran/cancel-do-2.f90 --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="fortran.exp=libgomp.fortran/cancel-do-2.f90 --target_board='unix{-m64\ -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="fortran.exp=libgomp.fortran/task1.f90 --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="fortran.exp=libgomp.fortran/task1.f90 --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="fortran.exp=libgomp.fortran/task1.f90 --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="fortran.exp=libgomp.fortran/task1.f90 --target_board='unix{-m64\ -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="fortran.exp=libgomp.fortran/teams2.f90 --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="fortran.exp=libgomp.fortran/teams2.f90 --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="fortran.exp=libgomp.fortran/teams2.f90 --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check RUNTESTFLAGS="fortran.exp=libgomp.fortran/teams2.f90 --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.)

Can not reproduce here. Fixed by the fix to PR126210

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126210

Running target unix

		=== gfortran Summary ===

# of expected passes		76375
# of expected failures		349
# of unsupported tests		87
/home/jerry/dev/objdir/gcc/gfortran  version 17.0.0 20260712 (experimental) (GCC)

		=== libgomp tests ===


Running target unix

		=== libgomp Summary ===

# of expected passes		11510
# of expected failures		239
# of unsupported tests		364

Compiler version: 17.0.0 20260712 (experimental) (GCC)
Platform: x86_64-pc-linux-gnu
configure flags: --prefix=/home/jerry/dev/usr --enable-languages=c,c++,fortran 
--enable-multilib --enable-libsanitizer --enable-libgomp --disable-bootstrap 
--with-demangler-in-ld --with-fpmath=sse