julia

cd78e6f8 - make sigaltstack failure nonfatal and clean up on thread return (#52055)

make sigaltstack failure nonfatal and clean up on thread return (#52055) Since we already could handle recursion onto the altstack, we can also handle recursion onto the main stack as well (at the cost of losing the ability to handle stackoverflow when this allocation fails). In the future, on mach, we could consider just using a single stack for handling stackoverflow and use a `_resetstkoflw`-like and/or `collect_backtrace_fiber`-like mechanism (like Windows) to pass it from one thread to the next that sequentially needs to use it. Closes #50786