Re: Fuzz testing with valgrind

[Martin Mathieson <martin.r.mathieson () googlemail com>]

On Wed, Jul 25, 2012 at 6:12 PM, Evan Huus <eapache () gmail com> wrote:

> I've been playing around in my head for a while now with the idea of
> running fuzz tests under valgrind. I notice the fuzz-test script
> already sets a bunch of environment variables for memory checking, so
> I'm not sure if valgrind would really add anything.
>
> How extensive are the memory checks turned on by the fuzz-test script?
> Would valgrind be a useful addition, or would it be mostly redundant?
>
> Thanks,
> Evan

I'm not sure either, but out of the 3 problems reported by valgrind that I
just fixed:
- 1 was writing outside of allocated data (which the canary checks may have
picked up on)
- 2 were reading/displaying/branching-based-upon uninitialized data (which
I don't expect other types of checks would spot)

Martin

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