https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120350
--- Comment #1 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Nathaniel Shead <nsh...@gcc.gnu.org>: https://gcc.gnu.org/g:9a6e5a437f0416627ee516f6ef5929cb30c5e498 commit r16-751-g9a6e5a437f0416627ee516f6ef5929cb30c5e498 Author: Nathaniel Shead <nathanielosh...@gmail.com> Date: Mon May 19 23:17:16 2025 +1000 c++/modules: Always mark tinfo vars as TREE_ADDRESSABLE [PR120350] We need to mark type info decls as addressable if we take them by reference; this is done by walking the declaration during parsing and marking the decl as needed. However, with modules we don't stream tinfo decls directly; rather we stream just their name and type and reconstruct them in the importer directly. This means that any addressable flags are not propagated, and we error because TREE_ADDRESSABLE is not set despite taking its address. But tinfo decls should always have TREE_ADDRESSABLE set, as any attempt to use the tinfo decl will go through build_address anyway. So this patch fixes the issue by eagerly marking the constructed decl as TREE_ADDRESSABLE so that modules gets this flag correctly set as well. PR c++/120350 gcc/cp/ChangeLog: * rtti.cc (get_tinfo_decl_direct): Mark TREE_ADDRESSABLE. gcc/testsuite/ChangeLog: * g++.dg/modules/tinfo-3_a.H: New test. * g++.dg/modules/tinfo-3_b.C: New test. Signed-off-by: Nathaniel Shead <nathanielosh...@gmail.com> Reviewed-by: Jason Merrill <ja...@redhat.com>
