https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119139
--- Comment #9 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Iain Buclaw <ibuc...@gcc.gnu.org>: https://gcc.gnu.org/g:81582ca6cb692098c1bda7995aec46c6cbfbfcb3 commit r15-7968-g81582ca6cb692098c1bda7995aec46c6cbfbfcb3 Author: Iain Buclaw <ibuc...@gdcproject.org> Date: Tue Mar 11 17:56:18 2025 +0100 d: Fix regression returning from function with invariants [PR119139] An optimization was added in GDC-12 which sets the TREE_READONLY flag on all local variables with the storage class `const' assigned. For some reason, const is also being added by the front-end to `__result' variables in non-virtual functions, which ends up getting wrong code by the gimplify pass promoting the local to static storage. A bug has been raised upstream, as this looks like an error in the AST. For now, turn off setting TREE_READONLY on all result variables. PR d/119139 gcc/d/ChangeLog: * decl.cc (get_symbol_decl): Don't set TREE_READONLY for __result declarations. gcc/testsuite/ChangeLog: * gdc.dg/pr119139.d: New test.
