id summary reporter owner description type status milestone component version severity resolution keywords cc 13598 VC++ 15 compiler warning C4456: declaration of 'cur' hides previous local declaration Volker Schöch Barend Gehrels "I'm using Microsoft Visual Studio 15.6.0 to compile boost 1.67.0. I use compiler flag /W4. The following warnings occur in geometry: **\boost_1_67_0\boost\geometry\algorithms\detail\is_valid\has_spikes.hpp(146): warning C4456: declaration of 'prev' hides previous local declaration** **\boost_1_67_0\boost\geometry\algorithms\detail\is_valid\has_spikes.hpp(149): warning C4456: declaration of 'next' hides previous local declaration** **\boost_1_67_0\boost\geometry\algorithms\detail\is_valid\has_spikes.hpp(142): warning C4456: declaration of 'cur' hides previous local declaration** Consider related ticket #13378." Bugs closed To Be Determined geometry Boost 1.67.0 Problem duplicate error warning C4456