Re: 11.0_BETA: glxinfo crashes with Segmentation fault

[Sad Clouds <cryintothebluesky%gmail.com@localhost>]

On Thu, 18 Dec 2025 19:37:45 +0100
Martin Husemann <martin%duskware.de@localhost> wrote:

> On Thu, Dec 18, 2025 at 07:27:51PM +0100, Henryk Paluch wrote:
> > I'm sorry but it is not bug in Mesa - thanks to RVP now we know for sure
> > that it is bug in handling atexit(3) call when invoked from shared libraries
> > via dlopen(3)/dlclose(3) calls. As demonstrated by RVP's example.
> 
> You can not portably use atexit() for a function from a shared library
> that you then dlclose() before exiting.
> 
> Use a destructor function instead.
> 
> Martin

I would say do not use atexit() at all unless you have a very primitive
program which does not rely on: shared libs, signals, longjmp, abort(),
etc. There are too many cases where functions registered with atexit()
will not be called.

A shared library calling atexit() is just as bad when it calls exit().
It is most likely to be a bad library design.