https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124071
--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jerry DeLisle <[email protected]>: https://gcc.gnu.org/g:a1b67de3a4dc9ca745569a16c8cab33c0ee6ceca commit r16-7735-ga1b67de3a4dc9ca745569a16c8cab33c0ee6ceca Author: Andre Vehreschild <[email protected]> Date: Thu Feb 12 11:13:25 2026 +0100 Fortran: Fix form team in caf_shmem [PR124071] Form team w/o new_index= tried to compute the new_index assuming that images are scattered onto to teams. I.e. the distribution is: Image index: 1 2 3 4 5 6 New team no: 1 2 1 2 1 2 , i.e. scattered But this algorithm failed, when the images were linearly distributed into the new teams, like in: Image index: 1 2 3 4 5 6 New team no: 1 1 1 2 2 2 The new approach is to look up a free index in the new team, when the computed one is already taken. Because F2018, 11.6.9, ยง4 states the new index is processor dependent, it feels safe to do it this way. PR fortran/124071 libgfortran/ChangeLog: * caf/shmem.c (_gfortran_caf_form_team): Take free index, when computed one is already taken. gcc/testsuite/ChangeLog: * gfortran.dg/coarray/form_team_1.f90: New test.
