Re: [C++ Patch] PR 14710 (add -Wuseless-cast)

[Paolo Carlini]

On 03/19/2012 03:59 PM, Jason Merrill wrote:
OK.
Thanks. I committed the patch. I'm going to add, as obvious, the 
following few additional tests, which my previous iteration got wrong.

Paolo.

//////////////////
2012-03-19  Paolo Carlini  <paolo.carl...@oracle.com>

        * g++.dg/warn/Wuseless-cast.C: Extend.



Index: testsuite/g++.dg/warn/Wuseless-cast.C
===================================================================
--- testsuite/g++.dg/warn/Wuseless-cast.C       (revision 185528)
+++ testsuite/g++.dg/warn/Wuseless-cast.C       (working copy)
@@ -58,6 +58,8 @@ template<typename T>
     dynamic_cast<A&>(t);
   }
 
+A prvalue();
+
 void f()
 {
   int n; 
@@ -90,6 +92,10 @@ void f()
 #ifdef __GXX_EXPERIMENTAL_CXX0X__
   (int&&)(42);
   static_cast<int&&>(42);
+
+  (A&&)(prvalue());
+  const_cast<A&&>(prvalue());
+  static_cast<A&&>(prvalue());
 #endif
 
   A a;