On Wed, Nov 21, 2018 at 01:39:32PM -0500, Mathieu Desnoyers wrote: > Register rseq(2) TLS for each thread (including main), and unregister > for each thread (excluding main). "rseq" stands for Restartable > Sequences. Maybe I'm missing something obvious, but "unregister" does not seem to be a meaningful operation. Can you clarify what it's for? Rich