Fix for "defined but not used" warning

[Dave Abrahams]

The following simple patch seems to make GCC a whole lot happier:

properties.hpp

@@ -93 +93 @@
 #else
 #define BOOST_DEF_PROPERTY(KIND, NAME) \
   struct KIND##_##NAME##_t {};                          \
-  namespace { KIND##_##NAME##_t KIND##_##NAME; }        \
+  namespace { KIND##_##NAME##_t const KIND##_##NAME = {}; }   \
   BOOST_INSTALL_PROPERTY(KIND, NAME)
 #endif
 

I haven't tested it against the trunk tests but if you are willing to try and see what breaks, I would be happy to apply it in trunk if you give me the go-ahead.

[Douglas Gregor]

Please go ahead and apply to the trunk

[Dave Abrahams]

Turns out the trunk avoids this problem by using enums.

[leyisong@…]

I also meet a prooblem just like "defined but not used" warning..... It drives me mad~

[Steven Watanabe]

Replying to leyisong@…:

I also meet a prooblem just like "defined but not used" warning..... It drives me mad~

This comment is somewhat pointless unless you can be more specific.