[AshamedCaptain]

Laugh all you want, but this is is precisely why I like "old-fashioned" asynchronous exceptions (the ones which unwind the stack), and ensure most programs are ready to handle a clean stack unwind at practically any point inside the program (e.g. asynchronous-unwind-tables).

[kcl]

The way exceptions are handled as a result of siglongjmp'ing out of a signal handler is currently platform-inconsistent and one of the many dark areas I alluded to. It isn't even consistent on Linux between compilers.