Introduce a new expression kind, SubstNonTypeTemplateParmPackExpr,
that captures the substitution of a non-type template argument pack
for a non-type template parameter pack within a pack expansion that
cannot be fully expanded. This follows the approach taken by
SubstTemplateTypeParmPackType.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123506 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ExprConstant.cpp b/lib/AST/ExprConstant.cpp
index 57ceb3f..cb73810 100644
--- a/lib/AST/ExprConstant.cpp
+++ b/lib/AST/ExprConstant.cpp
@@ -2645,6 +2645,7 @@
   case Expr::NoStmtClass:
   case Expr::OpaqueValueExprClass:
   case Expr::PackExpansionExprClass:
+  case Expr::SubstNonTypeTemplateParmPackExprClass:
     return ICEDiag(2, E->getLocStart());
 
   case Expr::SizeOfPackExprClass: