id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc 10098,Ugly warning about sign/unsigned mismatch in comparison,Joseph Southwell ,Neil Groves,"operator[] and operator() in iterator_range_core take difference_type and then compare it to size type. To fix the warning either those operators should take size_type or you should cast at like ((size_type)at) in the comparison. I am attaching a patch with cast option in it since that is less likely to impact things calling these operators. ",Patches,closed,Boost 1.56.0,range,Boost Release Branch,Cosmetic,fixed,,