https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60898
--- Comment #18 from Mikael Morin <mikael at gcc dot gnu.org> --- Created attachment 34756 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34756&action=edit patch fixing comment #7 (In reply to Mikael Morin from comment #17) > Using Tobias' analysis in comment #14, there is an "obvious" fix, augmenting > the reference count of the symbols present in the vector (untested): > This is not enough. There is some code in resolve_symbol that reassigns some this_symtree->n.sym, and may call gfc_release_symbol. The problem being there is no check that this_symtree->n.sym == sym, so that we may apply gfc_free_symbol to something that remains reachable through this_symtree->n.sym.
