On Linux/x86_64,

a553c70e363e75ce02c8e12e3b74b1dd9a965475 is the first bad commit
commit a553c70e363e75ce02c8e12e3b74b1dd9a965475
Author: Tobias Burnus <[email protected]>
Date:   Fri Dec 5 09:08:06 2025 +0100

    OpenMP: C/C++ parser support for dyn_groupprivate

caused

FAIL: gfortran.dg/gomp/dyn_groupprivate-1.f90   -O   scan-tree-dump-times 
original "#pragma omp target dyn_groupprivate\\(D.4680\\)" 1

with GCC configured with

../../gcc/configure 
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-5899/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="gomp.exp=gfortran.dg/gomp/dyn_groupprivate-1.f90 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="gomp.exp=gfortran.dg/gomp/dyn_groupprivate-1.f90 
--target_board='unix{-m32\ -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.)

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