Teach NestedNameSpecifier to keep track of namespace aliases the same

way it keeps track of namespaces. Previously, we would map from the
namespace alias to its underlying namespace when building a
nested-name-specifier, losing source information in the process.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126358 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/Sema/DeclSpec.cpp b/lib/Sema/DeclSpec.cpp
index 39984974bf..f21d90f7c8 100644
--- a/lib/Sema/DeclSpec.cpp
+++ b/lib/Sema/DeclSpec.cpp
@@ -74,6 +74,15 @@ void CXXScopeSpec::Extend(ASTContext &Context, NamespaceDecl *Namespace,
   Range.setEnd(ColonColonLoc);
 }
 
+void CXXScopeSpec::Extend(ASTContext &Context, NamespaceAliasDecl *Alias,
+                          SourceLocation AliasLoc, 
+                          SourceLocation ColonColonLoc) {
+  ScopeRep = NestedNameSpecifier::Create(Context, ScopeRep, Alias);
+  if (Range.getBegin().isInvalid())
+    Range.setBegin(AliasLoc);
+  Range.setEnd(ColonColonLoc);
+}
+
 void CXXScopeSpec::MakeGlobal(ASTContext &Context, 
                               SourceLocation ColonColonLoc) {
   assert(!ScopeRep && "Already have a nested-name-specifier!?");