https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77500
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Author: jakub Date: Thu Sep 8 12:19:21 2016 New Revision: 240038 URL: https://gcc.gnu.org/viewcvs?rev=240038&root=gcc&view=rev Log: PR fortran/77500 * trans-openmp.c (gfc_trans_omp_atomic): For atomic write or swap, don't try to look through GFC_ISYM_CONVERSION. In other cases, check that value.function.isym is non-NULL before dereferencing it. * gfortran.dg/gomp/pr77500.f90: New test. Added: trunk/gcc/testsuite/gfortran.dg/gomp/pr77500.f90 Modified: trunk/gcc/fortran/ChangeLog trunk/gcc/fortran/trans-openmp.c trunk/gcc/testsuite/ChangeLog