id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
6142	boost::mpl/has_xxx.hpp gives several errors	Ivo Raisr <ivosh@…>	Aleksey Gurtovoy	"when using boost 1.47.0 with gcc 4.1.2 and -Wundef -Werror,
it gives the following errors

{{{
boost/mpl/has_xxx.hpp:344:9: error: ""BOOST_MPL_HAS_XXX_NO_EXPLICIT_TEST_FUNCTION"" is not defined
boost/mpl/has_xxx.hpp:357:9: error: ""BOOST_MPL_HAS_XXX_NO_WRAPPED_TYPES"" is not defined
mpl/has_xxx.hpp:386:9: error: ""BOOST_MPL_HAS_XXX_NO_EXPLICIT_TEST_FUNCTION"" is not defined
boost/mpl/has_xxx.hpp:459:8: error: ""BOOST_MPL_HAS_XXX_NEEDS_TEMPLATE_SFINAE"" is not defined
}}}

This problem has been already addressed by bug report 4666, but apparently its part for MPL has been forgotten. Therefore I would like to resurrect this problem again.

Either the logic of defining these four #define's needs to be revisited in the header file, or their usage must be rewritten to check whether the #define is defined at all. For the latter case, I'm attaching a patch.

Should you need more information, just ping me.
Ivo Raisr"	Bugs	new	Boost 1.49.0	mpl	Boost 1.47.0	Problem			driscoll@… bb51@…