Preserve that a TemplateName was arrived at by substituting

for a template template parameter.

Uses to follow.

I've also made the uniquing of SubstTemplateTemplateParmPacks
use a ContextualFoldingSet as a minor space efficiency.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134137 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/Sema/SemaTemplateInstantiate.cpp b/lib/Sema/SemaTemplateInstantiate.cpp
index 69e592ee25..c452e26a40 100644
--- a/lib/Sema/SemaTemplateInstantiate.cpp
+++ b/lib/Sema/SemaTemplateInstantiate.cpp
@@ -992,13 +992,14 @@ TemplateName TemplateInstantiator::TransformTemplateName(CXXScopeSpec &SS,
       
       TemplateName Template = Arg.getAsTemplate();
       assert(!Template.isNull() && "Null template template argument");
-      
+
       // We don't ever want to substitute for a qualified template name, since
       // the qualifier is handled separately. So, look through the qualified
       // template name to its underlying declaration.
       if (QualifiedTemplateName *QTN = Template.getAsQualifiedTemplateName())
         Template = TemplateName(QTN->getTemplateDecl());
-          
+
+      Template = getSema().Context.getSubstTemplateTemplateParm(TTP, Template);
       return Template;
     }
   }