Re: pkg/55093 (glxinfo crashed on MesaLib 20.0.2 on moduler X in NetBSD-current/i386.)

[Tobias Nygren <tnn%NetBSD.org@localhost>]

The following reply was made to PR pkg/55093; it has been noted by GNATS.

From: Tobias Nygren <tnn%NetBSD.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: pkg/55093 (glxinfo crashed on MesaLib 20.0.2 on moduler X in
 NetBSD-current/i386.)
Date: Sat, 21 Mar 2020 21:06:16 +0100

 This problem due not occur under all configurations. For example it
 does not happen with modesetting on i915 or radeon. It can be triggered
 on those by setting environment variables:
 
 GALLIUM_DRIVER=llvmpipe LIBGL_ALWAYS_SOFTWARE=true
 
 This is also true for x86_64. What happens then is that glGetString()
 doesn't get resolved to any implementation and glxinfo crashes.
 
 There is only one call to u_current_set_table and we do return the same
 table pointer at the time when glGetString() gets called so I don't
 think the problem is in the patch. There may be code on in some of the
 backends that make false assumptions about the startup value of TLS
 variables. Need to compare with pkgsrc on Linux.