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Diffstat (limited to 'clang/lib/Sema/SemaModule.cpp')
-rw-r--r--clang/lib/Sema/SemaModule.cpp15
1 files changed, 12 insertions, 3 deletions
diff --git a/clang/lib/Sema/SemaModule.cpp b/clang/lib/Sema/SemaModule.cpp
index b0e7d30..3aa124d 100644
--- a/clang/lib/Sema/SemaModule.cpp
+++ b/clang/lib/Sema/SemaModule.cpp
@@ -90,7 +90,14 @@ Sema::ActOnGlobalModuleFragmentDecl(SourceLocation ModuleLoc) {
// All declarations created from now on are owned by the global module.
auto *TU = Context.getTranslationUnitDecl();
- TU->setModuleOwnershipKind(Decl::ModuleOwnershipKind::Visible);
+ // [module.global.frag]p2
+ // A global-module-fragment specifies the contents of the global module
+ // fragment for a module unit. The global module fragment can be used to
+ // provide declarations that are attached to the global module and usable
+ // within the module unit.
+ //
+ // So the declations in the global module shouldn't be visible by default.
+ TU->setModuleOwnershipKind(Decl::ModuleOwnershipKind::ReachableWhenImported);
TU->setLocalOwningModule(GlobalModule);
// FIXME: Consider creating an explicit representation of this declaration.
@@ -325,10 +332,12 @@ Sema::ActOnModuleDecl(SourceLocation StartLoc, SourceLocation ModuleLoc,
VisibleModules.setVisible(Mod, ModuleLoc);
// From now on, we have an owning module for all declarations we see.
- // However, those declarations are module-private unless explicitly
+ // In C++20 modules, those declaration would be reachable when imported
+ // unless explicitily exported.
+ // Otherwise, those declarations are module-private unless explicitly
// exported.
auto *TU = Context.getTranslationUnitDecl();
- TU->setModuleOwnershipKind(Decl::ModuleOwnershipKind::ModulePrivate);
+ TU->setModuleOwnershipKind(Decl::ModuleOwnershipKind::ReachableWhenImported);
TU->setLocalOwningModule(Mod);
// We are in the module purview, but before any other (non import)