Re: [PATCH] vcruntime140_1: Terminate on noexcept function trying to propagate exception.

[Piotr Caban]

Hi Daniel,

On 9/30/20 6:49 AM, Daniel Lehman wrote:
> - ret = cxx_frame_handler4(rec, frame, context, dispatch, &descr, trylevel);
> - if (descr.header & FUNC_DESCR_NO_EXCEPT &&
> -
>    !(rec->ExceptionFlags & (EH_UNWINDING|EH_EXIT_UNWIND)) &&
> -
>    ret == ExceptionContinueSearch)
> - {
> -
>    ERR("noexcept function propagating exception\n");
> -
>    terminate();
> - }

This will not work for nested exceptions. You will need to move the 
handling to cxx_frame_handler4 helper.

Here's an example of non-working code (in noexcept function):
try {
     try { throw 1; }
     catch (int e) { throw; }
}
catch (...) {
}

Thanks,
Piotr