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Subject: Re: [PATCH] Add git-imap-send.
Date: Thu, 09 Mar 2006 10:09:39 -0800
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Cc: git@vger.kernel.org, Mike McCormack <mike@codeweavers.com>
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To: Linus Torvalds <torvalds@osdl.org>
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Linus Torvalds <torvalds@osdl.org> writes:

> it's entirely possible that it will load bytes from "string" _past_ the 
> end of the string because of an unrolled inner loop that does things 
> multiple bytes at a time. They won't be used in the eventual result, but 
> just the fact that they are loaded from memory can mean that your program 
> takes a SIGSEGV, for example, becaue it turns out "string" was just a 
> single NUL byte at the end of a page, and there's nothing after it.

Funny.  I've seen this exact bug in memcmp and strcmp in earlier
SunOS (pre Solaris) libc when I was working on something like
Valgrind in my previous life.