id summary reporter owner description type status milestone component version severity resolution keywords cc 13377 VC++ 14 error C4458: declaration of 'debug_phase' hides class member Volker Schöch Barend Gehrels "I am using Microsoft Visual Studio 15.5.1 (VCToolsVersion 14.12.25827) to compile boost 1.66.0. I use compiler flag /W4. The following error occurs in geometry: **\boost_1_66_0\boost\geometry\algorithms\detail\is_valid\multipolygon.hpp(291): error C4458: declaration of 'debug_phase' hides class member**" Bugs closed To Be Determined geometry Boost 1.66.0 Problem duplicate warning, error, C4458