[Concepts] Pass requires-clause to ActOnTemplateParameterList; NFC

Summary:
Prepare to store requires-clause expression for access via
TemplateParameterList.

Reviewers: aaron.ballman, faisalv, rsmith

Subscribers: cfe-commits, nwilson

Differential Revision: http://reviews.llvm.org/D19220

llvm-svn: 268081

1 files changed, 6 insertions, 3 deletions

diff --git a/clang/lib/Sema/SemaTemplate.cpp b/clang/lib/Sema/SemaTemplate.cpp
index 3833e2c3f07..9d3bf1c1605 100644
--- a/clang/lib/Sema/SemaTemplate.cpp
+++ b/clang/lib/Sema/SemaTemplate.cpp
@@ -817,18 +817,21 @@ Decl *Sema::ActOnTemplateTemplateParameter(Scope* S,
   return Param;
 }
 
-/// ActOnTemplateParameterList - Builds a TemplateParameterList that
-/// contains the template parameters in Params/NumParams.
+/// ActOnTemplateParameterList - Builds a TemplateParameterList, optionally
+/// constrained by RequiresClause, that contains the template parameters in
+/// Params.
 TemplateParameterList *
 Sema::ActOnTemplateParameterList(unsigned Depth,
                                  SourceLocation ExportLoc,
                                  SourceLocation TemplateLoc,
                                  SourceLocation LAngleLoc,
                                  ArrayRef<Decl *> Params,
-                                 SourceLocation RAngleLoc) {
+                                 SourceLocation RAngleLoc,
+                                 Expr *RequiresClause) {
   if (ExportLoc.isValid())
     Diag(ExportLoc, diag::warn_template_export_unsupported);
 
+  // FIXME: store RequiresClause
   return TemplateParameterList::Create(
       Context, TemplateLoc, LAngleLoc,
       llvm::makeArrayRef((NamedDecl *const *)Params.data(), Params.size()),