bug#59544: [PATCH] Fixed lib-src/etags.c command execute vulnerability

[Eli Zaretskii]

> From: Stefan Kangas <stefankangas@gmail.com>
> Date: Fri, 25 Nov 2022 00:56:32 -0800
> Cc: Eli Zaretskii <eliz@gnu.org>, 59544 <59544@debbugs.gnu.org>
> 
> "lux" <lx@shellcodes.org> writes:
> 
> >> Hmm, I'm not sure about the hard-coded 512 character line limit here.
> >> ISTR that some people use much longer lines than that.
> >
> > Hi, do you have any suggestions? At present, I think hardcoding 512 is
> > enough, thanks :-)
> 
> No idea, really.  2^16?  2^20?
> 
> But why not allocate it dynamically, getting rid of any such arbitrary
> limits?  AFAIU, grep (which we used before) doesn't have such limits, so
> I fear that we otherwise risk introducing regressions.

Yes, reallocating dynamically as needed would be best.