re PR c++/52744 (bad handling of member (function) pointers in template parameters)

2012-10-12  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/52744
	* g++.dg/cpp0x/pr52744.C: New.

From-SVN: r192392

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 0612d04351fa8a42b6e5ac44b684534336963df5..9f3d29906f9abaa6b7fc5661a86fb2e0375ab526 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2012-10-12  Paolo Carlini  <paolo.carlini@oracle.com>
+
+       PR c++/52744
+       * g++.dg/cpp0x/pr52744.C: New.
+
 2012-10-12  Janus Weil  <janus@gcc.gnu.org>
 
        PR fortran/40453

diff --git a/gcc/testsuite/g++.dg/cpp0x/pr52744.C b/gcc/testsuite/g++.dg/cpp0x/pr52744.C
new file mode 100644 (file)
index 0000000..1a01fb2
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/pr52744.C
@@ -0,0 +1,83 @@
+// PR c++/52744
+// { dg-do compile { target c++11 } }
+
+struct T
+{
+  int a;
+  void b(){}
+  int c(int)
+  {
+    return 1;
+    }
+};
+
+template<typename CT, CT> struct member_helper;
+
+template<typename FT, FT(T::*mem)>
+struct member_helper<FT(T::*), mem>
+{
+  static const char* worker()
+  {
+    return "for members";
+  }
+};
+
+template<typename Return, typename... Args, Return(T::*fun)(Args...)>
+struct member_helper<Return(T::*)(Args...), fun>
+{
+  static const char* worker()
+  {
+    return "for member functions returning non void";
+  }
+};
+
+template<typename... Args, void(T::*fun)(Args...)>
+struct member_helper<void(T::*)(Args...), fun>
+{
+  static const char* worker()
+  {
+    return "for member functions returning void";
+  }
+};
+
+void member_test()
+{
+  member_helper<decltype(&T::a), &T::a>::worker();
+  member_helper<decltype(&T::b), &T::b>::worker();
+  member_helper<decltype(&T::c), &T::c>::worker();
+}
+
+typedef void lua_State;
+
+template<typename T, T> class function_helper
+{
+  static_assert(sizeof(T) != sizeof(T),
+               "Error: function_helper works with functions (duh)");
+};
+
+template<typename Return, typename... Args, Return(*func)(Args...)>
+struct function_helper<Return(*)(Args...), func>
+{
+  static int wrapper(lua_State* l)
+  {
+    return 1;
+  }
+};
+
+template<typename... Args, void(*func)(Args...)>
+struct function_helper<void(*)(Args...), func>
+{
+  static int wrapper(lua_State* l)
+  {
+    return 0;
+  }
+};
+
+int ciao(int){ return 0; }
+void ciao2(int){}
+
+void function_test()
+{
+  function_helper<decltype(&ciao), &ciao>::wrapper(0);
+  function_helper<decltype(&ciao2), &ciao2>::wrapper(0);
+}