[boost] failures with intel-win32-7.1-vc6-stlport-4.5.3 Toolset?

I've been trying to track down a couple of regex test failures that appear for this toolset, but can't build even build STLPort never mind the tests with Intel 7.1, I consistently get errors like: c:\download\open\stlport\STLport-4.5.3\stlport\cstdlib(42): error: namespace "st d" has no member "div_t" using _STLP_VENDOR_CSTD::div_t; ^ c:\download\open\stlport\STLport-4.5.3\stlport\cstdlib(43): error: namespace "st d" has no member "ldiv_t" using _STLP_VENDOR_CSTD::ldiv_t; ^ So is this test being run with a modified STLport version or something? Thanks, John.