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Re: Crash at THFSPlusStore::LessThan(HFSUniStr255 const&)

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Re: Crash at THFSPlusStore::LessThan(HFSUniStr255 const&)

Subject: Re: Crash at THFSPlusStore::LessThan(HFSUniStr255 const&)
From: Jens Alfke <email@hidden>
Date: Tue, 12 Feb 2008 15:49:31 -0800

These kinds of memory smashers can be hard to track down. I would start by setting the environment variable MallocScribble to 1. This will overwrite freed blocks with a repeating 0x55 pattern, which will help flush out places where something is reading from a freed block. (It's cheap enough that I always set it up in my executable settings in Xcode, and in my .gdbinit.)

The heavy-duty tool for detecting smashers is libgmalloc. I've actually never used it, but I believe there is documentation in the system. It vastly increases memory usage and slows your code to a crawl, though, so it might take hours to get to the point of the crash...

—Jens_______________________________________________

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References:  
  >Crash at THFSPlusStore::LessThan(HFSUniStr255 const&) (From: Daniel Cote <email@hidden>)




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