Implement support for pack expansions whose pattern is a non-type

template argument (described by an expression, of course). For
example:

  template<int...> struct int_tuple { };

  template<int ...Values>
  struct square {
    typedef int_tuple<(Values*Values)...> type;
  };

It also lays the foundation for pack expansions in an initializer-list.
  

llvm-svn: 122751

1 files changed, 5 insertions, 0 deletions

diff --git a/clang/lib/AST/StmtPrinter.cpp b/clang/lib/AST/StmtPrinter.cpp
index 6bbe8f9cd9b..cc905267369 100644
--- a/clang/lib/AST/StmtPrinter.cpp
+++ b/clang/lib/AST/StmtPrinter.cpp
@@ -1246,6 +1246,11 @@ void StmtPrinter::VisitCXXNoexceptExpr(CXXNoexceptExpr *E) {
   OS << ")";
 }
 
+void StmtPrinter::VisitPackExpansionExpr(clang::PackExpansionExpr *E) {
+  PrintExpr(E->getPattern());
+  OS << "...";
+}
+
 // Obj-C
 
 void StmtPrinter::VisitObjCStringLiteral(ObjCStringLiteral *Node) {