https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77327
--- Comment #6 from Vittorio Zecca <zeccav at gmail dot com> --- After applying the proposed patch the asan memory checker did not report any memory fault, in particular the heap-use-after-free in interface.c Fritz, do you have a -fsanitize=address version of gfortran, in particular of f951?
