Comments: handle template paramter documentation in alias-declaration
templates.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161215 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/Comment.cpp b/lib/AST/Comment.cpp
index 15b80c6..ecf6d2a 100644
--- a/lib/AST/Comment.cpp
+++ b/lib/AST/Comment.cpp
@@ -194,6 +194,10 @@
   } else if (isa<ClassTemplateSpecializationDecl>(ThisDecl)) {
     IsTemplateDecl = true;
     IsTemplateSpecialization = true;
+  } else if (const TypeAliasTemplateDecl *TAT =
+                 dyn_cast<TypeAliasTemplateDecl>(ThisDecl)) {
+    IsTemplateDecl = true;
+    TemplateParameters = TAT->getTemplateParameters();
   }
   IsFilled = true;
 }