Implement C++0x [expr.static.cast]p9, which permits explicitly casting

a scoped enumeration type to an integral or floating type,
properly. There was an over-eager assertion, and it was missing the
floating-point case.

Fixes PR9107/<rdar://problem/8937402>. 

llvm-svn: 125825

1 files changed, 29 insertions, 0 deletions

diff --git a/clang/test/CXX/expr/expr.post/expr.static.cast/p9-0x.cpp b/clang/test/CXX/expr/expr.post/expr.static.cast/p9-0x.cpp
new file mode 100644
index 00000000000..4acafb89aca
--- /dev/null
+++ b/clang/test/CXX/expr/expr.post/expr.static.cast/p9-0x.cpp
@@ -0,0 +1,29 @@
+// RUN: %clang_cc1 -std=c++0x -fsyntax-only -verify %s
+
+enum class EC { ec1 };
+
+void test0(EC ec) {
+  (void)static_cast<bool>(ec);
+  (void)static_cast<bool>(EC::ec1);
+  (void)static_cast<char>(ec);
+  (void)static_cast<char>(EC::ec1);
+  (void)static_cast<int>(ec);
+  (void)static_cast<int>(EC::ec1);
+  (void)static_cast<unsigned long>(ec);
+  (void)static_cast<unsigned long>(EC::ec1);
+  (void)static_cast<float>(ec);
+  (void)static_cast<float>(EC::ec1);
+  (void)static_cast<double>(ec);
+  (void)static_cast<double>(EC::ec1);
+}
+
+namespace PR9107 {
+  enum E {};
+  template <class _Tp> inline _Tp* addressof(_Tp& __x) {
+    return (_Tp*)&(char&)__x;
+  }
+  void test() {
+    E a;
+    addressof(a);
+  }
+}