[r15-7963 Regression] FAIL: gfortran.dg/binding_label_tests_26b.f90 -O (test for errors, line 8) on Linux/x86_64

[haochen.jiang]

On Linux/x86_64,

456924e078c0312f9a0f07aa829ab2b6fdcf237c is the first bad commit
commit 456924e078c0312f9a0f07aa829ab2b6fdcf237c
Author: Richard Sandiford <richard.sandiford@arm.com>
Date:   Tue Mar 11 15:39:00 2025 +0000

    aarch64: Generalise tbz_2.c

caused

FAIL: gfortran.dg/binding_label_tests_26b.f90   -O   (test for errors, line 8)
FAIL: gfortran.dg/binding_label_tests_26b.f90   -O   (test for errors, line 9)
FAIL: gfortran.dg/binding_label_tests_26b.f90   -O  (test for excess errors)

with GCC configured with

../../gcc/configure --prefix=/export/users/haochenj/src/gcc-bisect/master/master/r15-7963/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=gfortran.dg/binding_label_tests_26b.f90 --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gfortran.dg/binding_label_tests_26b.f90 --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gfortran.dg/binding_label_tests_26b.f90 --target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gfortran.dg/binding_label_tests_26b.f90 --target_board='unix{-m64\ -march=cascadelake}'"

(Please do not reply to this email, for question about this report, contact me at haochen dot jiang at intel.com.)
(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.)