[Mesa-dev] [Bug 99781] Some Unity games fail assertion on startup in glXCreateContextAttribsARB

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99781

--- Comment #13 from Uli Schlachter <psychon at znc.in> ---
Created attachment 143766
  --> https://bugs.freedesktop.org/attachment.cgi?id=143766&action=edit
A single-threaded reproducer

I think I came up with a single-threaded program reproducing the bug. More
details in inline comments.

When changing the copy of __glXSendError() from using dpy->request to
dpy->last_request_read (and compiling with -DNDEBUG so that the inline
asserts() do not trigger), the problem goes away. So, I think the analysis from
my previous comment is correct.

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