Re: ZILE 2.3.10 (Autoconf 2.64 finds deadly DJGPP Bash bug)

[Ralf Wildenhues]

Hello,

* Eric Blake wrote on Fri, Aug 21, 2009 at 01:51:29AM CEST:
> Or does it require a more complex function body, to show the difference
> where the subshell avoids the crash?  At any rate, we'll need to
> characterize exactly what your shell's bug is.

Yes.  Rugxulo or Reuben, can you please post a link to the package
that's failing?  Thanks.

> However, the whole point of using 'return $ac_retval' without a subshell
> is to avoid forking, and catering to bash 2.04 brokenness (if it is indeed
> a bash bug fixed for 2.05a, as I suspect) is a step backwards.

We could use as_fn_set_status everywhere, and only define that to
use a subshell if we detect 2.05a.  That shouldn't penalize users of
non-broken shells so much.  (Of course, this is pretty vague given
that we don't know what exactly the bug is.)

Cheers,
Ralf