On Wed, 16 Oct 2013 13:53:40 -0400 Marc Dionne <marc.c.dionne@gmail.com> wrote: > One thing that might be worth trying is to see if switching to > setcontext/getcontext helps (see platforms that define USE_UCONTEXT), I think the ucontext API is incomplete on *bsd platforms. It was on Mac OS X last time I checked anyway.