id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
12404	undefined behaviour in interval container library	Hannu Rummukainen <hannu.rummukainen@…>	Joachim Faulhaber	The file boost/icl/interval_bounds.hpp (line 45) contains the expression ((~_bits<<1) & _left) which invokes undefined behaviour by left shifting a negative signed integer. It can be fixed by replacing the expression with (((bound_type)~_bits<<1) & _left).  This issue was detected by GCC 6.1.0 with -fsanitize=undefined.	Bugs	closed	To Be Determined	ICL	Boost 1.61.0	Problem	fixed		Joachim Faulhaber