> On Nov 21, 2014, at 9:24 AM, Laurent Daudelin <[email protected]> 
> wrote:
> 
> I've never seen this. Anybody has any clue what could cause a method cache 
> corrupted? 

Well, general heap corruption, I suppose, like overwriting the end of a block 
or writing to previously-freed memory. These kinds of problems are hard to 
track down. They're more likely to stem from C or C++ code than from 
Objective-C. You should try testing your app while running memory diagnostics 
like MallocScribble, Guard Edges and GuardMalloc.

—Jens
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