211   ModuleScopes.push_back({}); // No GMF  in HandleStartOfHeaderUnit()
212   ModuleScopes.back().BeginLoc = StartOfTU;  in HandleStartOfHeaderUnit()
213   ModuleScopes.back().Module = Mod;  in HandleStartOfHeaderUnit()
314   assert(ModuleScopes.size() <= 1 && "expected to be at global module scope");  in ActOnModuleDecl()
322     Diag(VisibleModules.getImportLoc(ModuleScopes.back().Module),  in ActOnModuleDecl()
336         ModuleScopes.empty()  in ActOnModuleDecl()
338             : ModuleScopes.back().BeginLoc;  in ActOnModuleDecl()
452     ModuleScopes.push_back({});  in ActOnModuleDecl()
454       ModuleScopes.back().OuterVisibleModules = std::move(VisibleModules);  in ActOnModuleDecl()
461   ModuleScopes.back().BeginLoc = StartLoc;  in ActOnModuleDecl()
462   ModuleScopes.back().Module = Mod;  in ActOnModuleDecl()
499     Context.addModuleInitializer(ModuleScopes.back().Module, Import);  in ActOnModuleDecl()
517   switch (ModuleScopes.empty() ? Module::ExplicitGlobalModuleFragment  in ActOnPrivateModuleFragmentDecl()
518                                : ModuleScopes.back().Module->Kind) {  in ActOnPrivateModuleFragmentDecl()
530     Diag(ModuleScopes.back().BeginLoc, diag::note_previous_definition);  in ActOnPrivateModuleFragmentDecl()
535     Diag(ModuleScopes.back().BeginLoc,  in ActOnPrivateModuleFragmentDecl()
537         << FixItHint::CreateInsertion(ModuleScopes.back().BeginLoc, "export ");  in ActOnPrivateModuleFragmentDecl()
554           ModuleScopes.back().Module, PrivateLoc);  in ActOnPrivateModuleFragmentDecl()
558   ModuleScopes.push_back({});  in ActOnPrivateModuleFragmentDecl()
559   ModuleScopes.back().BeginLoc = ModuleLoc;  in ActOnPrivateModuleFragmentDecl()
560   ModuleScopes.back().Module = PrivateModuleFragment;  in ActOnPrivateModuleFragmentDecl()
588     assert(!ModuleScopes.empty() && "in a module purview, but no module?");  in ActOnModuleImport()
589     Module *NamedMod = ModuleScopes.back().Module;  in ActOnModuleImport()
696   if (!ModuleScopes.empty())  in ActOnModuleImport()
697     Context.addModuleInitializer(ModuleScopes.back().Module, Import);  in ActOnModuleImport()
704   } else if (!ModuleScopes.empty() && !currentModuleIsImplementation()) {  in ActOnModuleImport()
744     if (!ModuleScopes.empty())  in BuildModuleInclude()
745       Context.addModuleInitializer(ModuleScopes.back().Module, ImportD);  in BuildModuleInclude()
764   ModuleScopes.push_back({});  in ActOnAnnotModuleBegin()
765   ModuleScopes.back().Module = Mod;  in ActOnAnnotModuleBegin()
767     ModuleScopes.back().OuterVisibleModules = std::move(VisibleModules);  in ActOnAnnotModuleBegin()
787     VisibleModules = std::move(ModuleScopes.back().OuterVisibleModules);  in ActOnAnnotModuleEnd()
793   assert(!ModuleScopes.empty() && ModuleScopes.back().Module == Mod &&  in ActOnAnnotModuleEnd()
795   ModuleScopes.pop_back();  in ActOnAnnotModuleEnd()
865       Diag(ModuleScopes.back().BeginLoc,  in ActOnStartExportDecl()
867           << FixItHint::CreateInsertion(ModuleScopes.back().BeginLoc, "export ");  in ActOnStartExportDecl()
870     } else if (ModuleScopes.back().Module->Kind ==  in ActOnStartExportDecl()
873       Diag(ModuleScopes.back().BeginLoc, diag::note_private_module_fragment);  in ActOnStartExportDecl()
1038   ModuleScopes.push_back({BeginLoc, TheGlobalModuleFragment,  in PushGlobalModuleFragment()
1046   assert(!ModuleScopes.empty() &&  in PopGlobalModuleFragment()
1049   ModuleScopes.pop_back();  in PopGlobalModuleFragment()
1062   ModuleScopes.push_back({BeginLoc, TheImplicitGlobalModuleFragment,  in PushImplicitGlobalModuleFragment()
1069   assert(!ModuleScopes.empty() &&  in PopImplicitGlobalModuleFragment()
1072   ModuleScopes.pop_back();  in PopImplicitGlobalModuleFragment()