https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114229
--- Comment #4 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:9ccd03dee4c35a24c6699a58a7251a5277a91cf5 commit r14-9375-g9ccd03dee4c35a24c6699a58a7251a5277a91cf5 Author: Nathaniel Shead <nathanielosh...@gmail.com> Date: Thu Mar 7 23:09:03 2024 +1100 c++: Redetermine whether to write vtables on stream-in [PR114229] We currently always stream DECL_INTERFACE_KNOWN, which is needed since many kinds of declarations already have their interface determined at parse time. But for vtables and type-info declarations we need to re-evaluate on stream-in as whether they need to be emitted or not changes in each TU, so this patch clears DECL_INTERFACE_KNOWN on these kinds of declarations so that they can go through 'import_export_decl' again. Note that the precise details of the virt-2 tests will need to change when we implement the resolution of [1], for now I just updated the test to not fail with the new (current) semantics. [1]: https://github.com/itanium-cxx-abi/cxx-abi/pull/171 PR c++/114229 gcc/cp/ChangeLog: * module.cc (trees_out::core_bools): Redetermine DECL_INTERFACE_KNOWN on stream-in for vtables and tinfo. * decl2.cc (import_export_decl): Add fixme for ABI changes with module vtables and tinfo. gcc/testsuite/ChangeLog: * g++.dg/modules/virt-2_b.C: Update test to acknowledge that we now emit vtables here too. * g++.dg/modules/virt-3_a.C: New test. * g++.dg/modules/virt-3_b.C: New test. * g++.dg/modules/virt-3_c.C: New test. * g++.dg/modules/virt-3_d.C: New test. Signed-off-by: Nathaniel Shead <nathanielosh...@gmail.com>
