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From: "mikpe at it dot uu.se" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/52445] [4.6 Regression] conditional store replacement causes segfault in generated code
Date: Tue, 11 Sep 2012 14:21:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52445

Mikael Pettersson <mikpe at it dot uu.se> changed:

           What    |Removed                     |Added
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                 CC|                            |mikpe at it dot uu.se

--- Comment #13 from Mikael Pettersson <mikpe at it dot uu.se> 2012-09-11 14:21:09 UTC ---
Could this be applied to gcc-4.6.4 please?  A recently reported miscompilation
of a device driver in the Linux/ARM kernel by gcc-4.6.3 was traced to this bug.
 Applying the trunk patch to 4.6.3 fixed that test case.

FWIW, I've been using and testing this fix in my own 4.6-based branch since
early March, on multiple targets, without regressions.