[Bug 40767] [r600g] This commit is crashing World of Warcraft at start-up

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=40767

--- Comment #8 from Chris Rankin <rankincj at googlemail.com> 2011-09-11 15:55:58 PDT ---
(In reply to comment #6)
> It's probably easier to add fprintf() statements to
> _mesa_update_state_locked() and examine the carnage...

My crude debugging has revealed that the following line in
update_program_enables() is reading invalid memory:

   ctx->FragmentProgram._Enabled = ctx->FragmentProgram.Enabled
      && ctx->FragmentProgram.Current->Base.Instructions;

It looks like ctx->FragmentProgram.Current is pointing to somewhere strange.

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