tree 112fa7259303d899e966a639d33d2daf75f05174
parent 7cd96a68e0de805e2e381207264ecdd465987a8b
author David Chisnall <github@theravensnest.org> 1726495796 +0100
committer David Chisnall <davidchisnall@users.noreply.github.com> 1726582948 +0100

Add setjmp and setjmp-based error handling.

This is modelled on the OpenStep approach, which built Objective-C
exceptions atop setjmp.  This maintains a linked list of on-stack jump
buffers.  You can unwind out of an error handler and so these can be
used for cleanup in case of a trap.