Fix PR9902: correctly substitute alias templates within the template in which they are defined: provide an empty list of arguments for each containing template context during substitution.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@131211 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaTemplate.cpp b/lib/Sema/SemaTemplate.cpp
index a9b8af2..5d93067 100644
--- a/lib/Sema/SemaTemplate.cpp
+++ b/lib/Sema/SemaTemplate.cpp
@@ -1855,6 +1855,9 @@
// Only substitute for the innermost template argument list.
MultiLevelTemplateArgumentList TemplateArgLists;
+ unsigned Depth = AliasTemplate->getTemplateParameters()->getDepth();
+ for (unsigned I = 0; I < Depth; ++I)
+ TemplateArgLists.addOuterTemplateArguments(0, 0);
TemplateArgLists.addOuterTemplateArguments(&TemplateArgs);
InstantiatingTemplate Inst(*this, TemplateLoc, Template);