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Re: CPPCheck found 24 high risk bugs in Git v.1.8.3.4

From
Andreas Schwab <schwab@linux-m68k.org>
Date
Aug 20, 2013, 23:01 UTC
Message-ID
<87y57wnf03.fsf@igel.home>
In-Reply-To
<CABPQNSZSXgvLw_i25em38B70EgtZrv9iQh8OaCJzYRCk2vjZXQ@mail.gmail.com>
Erik Faye-Lund <kusmabite@gmail.com> writes:
> I don't see how it's undefined. It's using the memory that 'pos'
> *points to* that is undefined, no? The difference between 'pos' and
> 'str' should still be the same, it's not like realloc somehow
> magically updates 'pos'...

It does. Think of segmented architectures, where freeing a pointer invalidates its segment, so that even loading the value of the pointer traps. Probably no such architecture is in use any more, though.

Andreas.
-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."
Previous: Erik Faye-LundNext: Junio C Hamano
Message 13 of 18 in “CPPCheck found 24 high risk bugs in Git v.1.8.3.4”
  1. Koch, Rick (Subcontractor)Aug 19, 2013
  2. Philip OakleyAug 19, 2013
  3. Jeff KingAug 19, 2013
  4. Junio C HamanoAug 19, 2013
  5. Johan HerlandAug 19, 2013
  6. Philip OakleyAug 19, 2013
  7. Erik Faye-LundAug 19, 2013
  8. Jeff KingAug 20, 2013
  9. Andreas SchwabAug 20, 2013
  10. René ScharfeAug 20, 2013
  11. Erik Faye-LundAug 20, 2013
  12. Erik Faye-LundAug 20, 2013
  13. Andreas SchwabAug 20, 2013
  14. Junio C HamanoAug 20, 2013
  15. Erik Faye-LundAug 21, 2013
  16. Stefan BellerAug 19, 2013
  17. Philip OakleyAug 19, 2013
  18. Philip OakleyAug 23, 2013

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