Teach PackExpansionExpr to keep track of the number of pack expansions
it will expand to, if known. Propagate this information throughout Sema.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@123470 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/DeclTemplate.cpp b/lib/AST/DeclTemplate.cpp
index bd91fac..e7902e9 100644
--- a/lib/AST/DeclTemplate.cpp
+++ b/lib/AST/DeclTemplate.cpp
@@ -332,7 +332,8 @@
if (NTTP->isParameterPack())
E = new (Context) PackExpansionExpr(Context.DependentTy, E,
- NTTP->getLocation());
+ NTTP->getLocation(),
+ llvm::Optional<unsigned>());
Arg = TemplateArgument(E);
} else {
TemplateTemplateParmDecl *TTP = cast<TemplateTemplateParmDecl>(*Param);