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Nathaniel Shead
authored
In some cases we can access members of a namespace-scope class without ever having performed name-lookup on it; this can occur when a forward-declaration of the class is used as a return type, for instance, or with PIMPL. One possible approach would be to do name lookup in complete_type to force lazy loading to occur, but this seems overly expensive for a relatively rare case. Instead, this patch generalises the existing pending-entity support to handle this case as well. Unfortunately this does mean that almost every class definition will be added to the pending-entity table, and almost always unnecessarily, but I don't see a good way to avoid this. gcc/cp/ChangeLog: * module.cc (depset::DB_IS_MEMBER_BIT): Rename to... (depset::DB_IS_PENDING_BIT): ...this. (depset::is_member): Remove. (depset::is_pending_entity): New function. (depset::hash::make_dependency): Mark definitions of namespace-scope types as maybe-pending entities. (depset::hash::add_class_entities): Rename DB_IS_MEMBER_BIT to DB_IS_PENDING_BIT. (depset::hash::find_dependencies): Use is_pending_entity instead of is_member. (module_state::write_pendings): Likewise; adjust comment. gcc/testsuite/ChangeLog: * g++.dg/modules/inst-4_b.C: Adjust pending-entity count. * g++.dg/modules/member-def-1_c.C: Likewise. * g++.dg/modules/member-def-2_c.C: Likewise. * g++.dg/modules/tpl-spec-3_b.C: Likewise. * g++.dg/modules/tpl-spec-4_b.C: Likewise. * g++.dg/modules/tpl-spec-5_b.C: Likewise. * g++.dg/modules/class-9_a.H: New test. * g++.dg/modules/class-9_b.H: New test. * g++.dg/modules/class-9_c.C: New test. Signed-off-by:Nathaniel Shead <nathanieloshead@gmail.com> Reviewed-by:
Jason Merrill <jason@redhat.com>