[Bug 1247607]

[Bugs-i]

Created attachment 88817
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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https://bugs.launchpad.net/bugs/1247607

Title:
  Libdrm compiled with gcc 4.8 makes card hang on resume from s2disk

Status in The GNU Compiler Collection:
  New
Status in Accelerated Xorg driver for nVidia cards:
  Fix Released
Status in “libdrm” package in Ubuntu:
  Fix Released
Status in “libdrm” source package in Saucy:
  In Progress

Bug description:
  My initial bugreport was here:
  https://bugs.freedesktop.org/show_bug.cgi?id=71116

  - Recompiling libdrm with gcc 4.7 fixed the bug.

  Upstream GCC mail thread here: http://gcc.gnu.org/ml/gcc-
  help/2013-07/msg00103.html

  This was fixed thanks to Emil Velikov from the nouveau project.

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