Subject: Re: bug#50069: grep-3.7 test-regex fails when configured with --without-included-regex

From: Paul Eggert <[email-masked]>
Date: Sun, 15 Aug 2021 11:22:10 -0700

On 8/15/21 9:49 AM, Klaus Dittrich wrote:
> --without-included-regex
> don't compile regex; this is the default on systems
> with recent-enough versions of the GNU C Library
> (use with caution on other systems)....

> So is this option deprecated, configure/compile logic wrong or do I have 
> overlooked something?

You're running into this glibc bug:

https://sourceware.org/bugzilla/show_bug.cgi?id=11053

Unfortunately yhis has not yet been fixed in glibc. However, GNU grep's 
implementation fixes the bug.