Let using directives refer to namespace aliases. Fixes PR5479.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@89657 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/DeclCXX.cpp b/lib/AST/DeclCXX.cpp
index 94621aa..4001988 100644
--- a/lib/AST/DeclCXX.cpp
+++ b/lib/AST/DeclCXX.cpp
@@ -886,12 +886,21 @@
SourceRange QualifierRange,
NestedNameSpecifier *Qualifier,
SourceLocation IdentLoc,
- NamespaceDecl *Used,
+ NamedDecl *Used,
DeclContext *CommonAncestor) {
+ if (NamespaceDecl *NS = dyn_cast_or_null<NamespaceDecl>(Used))
+ Used = NS->getOriginalNamespace();
return new (C) UsingDirectiveDecl(DC, L, NamespaceLoc, QualifierRange,
Qualifier, IdentLoc, Used, CommonAncestor);
}
+NamespaceDecl *UsingDirectiveDecl::getNominatedNamespace() {
+ if (NamespaceAliasDecl *NA =
+ dyn_cast_or_null<NamespaceAliasDecl>(NominatedNamespace))
+ return NA->getNamespace();
+ return cast_or_null<NamespaceDecl>(NominatedNamespace);
+}
+
NamespaceAliasDecl *NamespaceAliasDecl::Create(ASTContext &C, DeclContext *DC,
SourceLocation L,
SourceLocation AliasLoc,
@@ -900,6 +909,8 @@
NestedNameSpecifier *Qualifier,
SourceLocation IdentLoc,
NamedDecl *Namespace) {
+ if (NamespaceDecl *NS = dyn_cast_or_null<NamespaceDecl>(Namespace))
+ Namespace = NS->getOriginalNamespace();
return new (C) NamespaceAliasDecl(DC, L, AliasLoc, Alias, QualifierRange,
Qualifier, IdentLoc, Namespace);
}