https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109646
--- Comment #3 from Patrick Bégou <patrick.be...@univ-grenoble-alpes.fr> --- Confirmed that this commit fixes this problem and https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109622 report too. I will check with the full application soon (need to rebuild OpenMPI for GCC 14). Many thanks you for your responsiveness. Patrick