[libvirt] [PATCH] tests: avoid null pointer dereference

[Daniel P. Berrange]

On Tue, May 03, 2011 at 10:38:00AM -0600, Eric Blake wrote:
> Unlikely to hit in real life, but clang noticed it.
> 
> * tests/commandtest.c (test4): Avoid unlink(NULL) on OOM.
> ---
> 
> Much like a similar patch I sent for qemu_driver, but this time
> the unlink(NULL) is much harder to trigger.
> 
>  tests/commandtest.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletions(-)
> 
> diff --git a/tests/commandtest.c b/tests/commandtest.c
> index fa0061c..e8d8858 100644
> --- a/tests/commandtest.c
> +++ b/tests/commandtest.c
> @@ -240,7 +240,8 @@ static int test4(const void *unused ATTRIBUTE_UNUSED)
> 
>  cleanup:
>      virCommandFree(cmd);
> -    unlink(pidfile);
> +    if (pidfile)
> +        unlink(pidfile);
>      VIR_FREE(pidfile);
>      return ret;
>  }

ACK

Daniel
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