[PATCH] test: Ignore subtly different behaviour of the musl libc

[David Bremner]

Luis Ressel <aranea at aixah.de> writes:

> If you really consider it important to convey the info that there was a
> regex parsing error, I can submit a patch to make compile_regex() prefix
> the regerror output with "regex error: " or sth like that.

That sounds good. The exception loses all location information at the C
boundary, so the message is all we have. The test was originally added
to make sure the regexp error checking (such as it is) was working, and
I'd like to preserve that if possible.

d