Teach static_cast and dynamic_cast about rvalue references.

llvm-svn: 124006

1 files changed, 14 insertions, 0 deletions

diff --git a/clang/test/CXX/expr/expr.post/expr.dynamic.cast/p3-0x.cpp b/clang/test/CXX/expr/expr.post/expr.dynamic.cast/p3-0x.cpp
new file mode 100644
index 00000000000..3b448a80db2
--- /dev/null
+++ b/clang/test/CXX/expr/expr.post/expr.dynamic.cast/p3-0x.cpp
@@ -0,0 +1,14 @@
+// RUN: %clang_cc1 -std=c++0x -fsyntax-only -verify %s
+
+struct X { virtual ~X(); };
+struct Y : public X { };
+struct Z; // expected-note{{forward declaration of 'Z'}}
+
+void test(X &x, Y &y, Z &z) {
+  // If T is an rvalue reference type, v shall be an expression having
+  // a complete class type, and the result is an xvalue of the type
+  // referred to by T.
+  Y &&yr0 = dynamic_cast<Y&&>(x);
+  Y &&yr1 = dynamic_cast<Y&&>(static_cast<X&&>(x));
+  Y &&yr2 = dynamic_cast<Y&&>(z); // expected-error{{'Z' is an incomplete type}}
+}