[PATCH 1/2] difftime can throw exceptions

[Florian Weimer]

* Paul Eggert:

> On 2024-06-04 09:42, Florian Weimer wrote:
>
>> At the GCC level, throwing from a signal handler inside is only
>> supported if building with -fnon-call-exceptions.  Is anyone actually
>> doing that?
>
> A quick search suggests that some people do it, yes. For example:
>
> https://github.com/golang/gofrontend/blob/60f985a7852632834936b4b859aa75d9df88f038/libgo/Makefile.am#L49
>
> https://github.com/LibreOffice/core/blob/d6607a9d9a3076c1d7c9a3e284631c5f57c24137/bridges/Library_cpp_uno.mk#L241
>
> https://forums.zeroc.com/discussion/46747/problem-linking-to-debug-libraries-on-rh7

Yes, it's heavily exercised by the Ada front end.

But what I meant: The code that throws from a synchronously invoked
signal handler would have to be built with -fnon-call-exceptions, so in
our case, glibc.

Thanks,
Florian