Re: [PATCH 3/3] kernel-shark: fix unitialized handle compile warnings

From: John Kacur
Date: Wed Feb 03 2010 - 11:42:12 EST


On Wed, Feb 3, 2010 at 5:19 PM, Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
> On Wed, 2010-02-03 at 11:17 -0500, Steven Rostedt wrote:
>> andle)
>> > > -               handle = tracecmd_open(input_file);
>> > > +       handle = tracecmd_open(input_file);
>> > >
>> > > -       info->handle = handle;
>> > > +       if (handle)
>> > > +               info->handle = handle;
>> > >
>> > >        /* --- Main window --- */
>> > >
>> > > --
>> >
>> > This looks correct, but I'm wondering if it is safe to continue if the
>> > call to tracecmd_open fails?
>>
>> Actually this patch is wrong. The real code should be:
>>
>> -     if (handle)
>> +     if (input_file)
>
> Looking at the context, this isn't enough. We should have had:
>
>        if (input_file)
>                info->handle = tracecmd_open(input_file);
>        else
>                info->handle = NULL;
>
> -- Steve
>

Okay, are you going to push it to your repo for us? I would offer to
push it through mine if it would save you time, but it's probably
quicker if you just handle it.
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