id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
12872	icl calls set::insert with invalid iterator hint	David Lacey <dave.lacey@…>	Joachim Faulhaber	"When using split_interval_set<T> the code in the add_segment function in interval_base_set.hpp tries to get the prior of an iterator that may be the first iterator of the underlying set container. This is then used as an insertion hint which causes a segfault in some standard container libraries (for example, the standard library on macOS).

All other parts of the file use cyclic_prior for this purpose."	Bugs	new	To Be Determined	ICL	Boost 1.63.0	Problem