Some months ago I proposed to include a defect macro to detect some defficiencies by several compilers regarding the ability to handle pointers to data members as template parameters. The name we came up with is BOOST_NO_POINTER_TO_MEMBER_TEMPLATE_PARAMETERS I include a little test case that successfully detects the bug in three out of the four compilers checked to show the problem * MSVC 6.5 (MSKB article ##249045), * MSVC 7.0 (***) * ICC 7.0/7.1 for Windows (support issue #207321), * VisualAge 6.0 for AIX (internal defect #288539.) The compiler marked with (***) does fail with the test, but only under certain compiler settings that I've not been able to isolate properly. When last discussed, it was argued that a new defect macro would only make sense if some lib needed it: now Boost.MultiIndex can take advantage of it (actually, the lib assumes the macro even if not currently supported by Boost.Config), and the problem has turned out to be more prevalent than the original MSVC-constrained case hinted at. Is it OK to add this to Boost.Config? Comment? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ OK, added as requested. John.