[boost] [wave][function] Suppressing gcc-4.4.1 warnings

Subject: [boost] [wave][function] Suppressing gcc-4.4.1 warnings
From: John Maddock (john_at_[hidden])
Date: 2009-11-05 07:17:42

Looks like the new type-punning warnings from gcc-4.4.1 are false positives 
(but I'd like someone else to confirm that!).

The fixes below illustrate how to suppress them simply by declaring a 
temporary variable.

HTH, John.

Index: boost/wave/util/flex_string.hpp
===================================================================
--- boost/wave/util/flex_string.hpp     (revision 57230)
+++ boost/wave/util/flex_string.hpp     (working copy)
@@ -1211,7 +1211,10 @@
     };

     Storage& Data() const
-    { return *reinterpret_cast<Storage*>(buf_); }
+    {
+       Storage* p = reinterpret_cast<Storage*>(buf_);
+       return *p;
+    }

     RefCountType GetRefs() const
     {
Index: boost/function/function_base.hpp
===================================================================
--- boost/function/function_base.hpp    (revision 57230)
+++ boost/function/function_base.hpp    (working copy)
@@ -316,11 +316,13 @@
             new ((void*)&out_buffer.data) functor_type(*in_functor);

             if (op == move_functor_tag) {
-              reinterpret_cast<functor_type*>(&in_buffer.data)->~Functor();
+              functor_type* f = 
reinterpret_cast<functor_type*>(&in_buffer.data);
+              f->~Functor();
             }
           } else if (op == destroy_functor_tag) {
             // Some compilers (Borland, vc6, ...) are unhappy with 
~functor_type.
-            reinterpret_cast<functor_type*>(&out_buffer.data)->~Functor();
+             functor_type* f = 
reinterpret_cast<functor_type*>(&out_buffer.data);
+             f->~Functor();
           } else if (op == check_functor_type_tag) {
             const BOOST_FUNCTION_STD_NS::type_info& check_type
               = *out_buffer.type.type;