https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91529
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-8 branch has been updated by Jason Merrill <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:09831707ce65606f951c97632d882f083ad3ed02 commit r8-10273-g09831707ce65606f951c97632d882f083ad3ed02 Author: Jason Merrill <ja...@redhat.com> Date: Mon May 25 18:38:09 2020 -0400 c++: -fmerge-all-constants vs. destructors [PR91529] cp_finish_decl avoids setting TREE_READONLY on TREE_STATIC variables that have non-constant construction or destruction, but -fmerge-all-constants was converting an automatic variable to static while leaving TREE_READONLY set. Fixed by clearing the flag in cp_finish_decl in the presence of -fmerge-all-constants. gcc/cp/ChangeLog 2020-05-01 Jason Merrill <ja...@redhat.com> PR c++/91529 * decl.c (cp_finish_decl): Also clear TREE_READONLY if -fmerge-all-constants.