[Nouveau] [Bug 71116] [any/all(?) cards below nv50(?)] libdrm built with gcc4.8 causes crashes/lockups during normal operation, and resume from disk/memory

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=71116

--- Comment #20 from Maarten Lankhorst <bugs at mblankhorst.nl> ---
Created attachment 88817
  --> https://bugs.freedesktop.org/attachment.cgi?id=88817&action=edit
hack to force defined behavior

As I feared, recompiling only pushbuf.c with gcc-4.7 fixes this bug. So
something in pushbuf.c is miscompiled. Unfortunately it's also the biggest
abuser of post increment ops.

A simple workaround seems to be this patch.

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