Add support for calls to dependent names within templates, e.g.,

  template<typename T> void f(T x) {
    g(x); // g is a dependent name, so don't even bother to look it up
    g(); // error: g is not a dependent name
  }

Note that when we see "g(", we build a CXXDependentNameExpr. However,
if none of the call arguments are type-dependent, we will force the
resolution of the name "g" and replace the CXXDependentNameExpr with
its result.

GCC actually produces a nice error message when you make this
mistake, and even offers to compile your code with -fpermissive. I'll
do the former next, but I don't plan to do the latter.

llvm-svn: 60618

1 files changed, 4 insertions, 0 deletions

diff --git a/clang/lib/AST/StmtPrinter.cpp b/clang/lib/AST/StmtPrinter.cpp
index 2e54777b94f..94bca638663 100644
--- a/clang/lib/AST/StmtPrinter.cpp
+++ b/clang/lib/AST/StmtPrinter.cpp
@@ -988,6 +988,10 @@ void StmtPrinter::VisitCXXDeleteExpr(CXXDeleteExpr *E) {
   PrintExpr(E->getArgument());
 }
 
+void StmtPrinter::VisitCXXDependentNameExpr(CXXDependentNameExpr *E) {
+  OS << E->getName()->getName();
+}
+
 // Obj-C 
 
 void StmtPrinter::VisitObjCStringLiteral(ObjCStringLiteral *Node) {