https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95707
--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Harald Anlauf <anl...@gcc.gnu.org>: https://gcc.gnu.org/g:4dd2fd9c4350529947fffc6bf257b5e22379554b commit r10-8341-g4dd2fd9c4350529947fffc6bf257b5e22379554b Author: Harald Anlauf <anl...@gmx.de> Date: Sat Jun 20 16:15:16 2020 +0200 PR fortran/95707 - ICE in finish_equivalences, at fortran/trans-common.c:1319 With submodules and equivalence declarations, name mangling may result in long internal symbols overflowing internal buffers. We now check that we do not exceed the enlarged buffer sizes. gcc/fortran/ PR fortran/95707 * gfortran.h (gfc_common_head): Enlarge buffer. * trans-common.c (gfc_sym_mangled_common_id): Enlarge temporary buffers, and add check on length on mangled name to prevent overflow. (cherry picked from commit 3345e74299687de6144b87c0632018cafd4ccf3b)