dev: Exceptions: add basic support for fuzzing. (#11511)
Pre-release
Pre-release
* Enable use of exceptions in our fuzz module generator. This patch was provided by Alex in #11505; it is thus Co-authored-by: Alex Crichton <alex@alexcrichton.com> * Add ExnRef comparison to differential result checking. --------- Co-authored-by: Alex Crichton <alex@alexcrichton.com>