[PATCH] pixman-renderer: don't forget to initialize the debug fields

Scott Moreau oreaus at gmail.com
Fri Mar 8 12:05:49 PST 2013


On Fri, Mar 8, 2013 at 1:05 PM, Philipp Brüschweiler <blei42 at gmail.com>wrote:

> Sorry, forgot Reply All.
>
>
> On Fri, Mar 8, 2013 at 9:04 PM, Philipp Brüschweiler <blei42 at gmail.com>wrote:
>
>> On Fri, Mar 8, 2013 at 8:44 PM, Scott Moreau <oreaus at gmail.com> wrote:
>>
>>>
>>>
>>> On Fri, Mar 8, 2013 at 12:35 PM, Philipp Brüschweiler <blei42 at gmail.com>wrote:
>>>
>>>> Fixes https://bugs.freedesktop.org/show_bug.cgi?id=61930
>>>> ---
>>>>  src/pixman-renderer.c | 2 ++
>>>>  1 file changed, 2 insertions(+)
>>>>
>>>> diff --git a/src/pixman-renderer.c b/src/pixman-renderer.c
>>>> index 9571f6f..9dbe9f0 100644
>>>> --- a/src/pixman-renderer.c
>>>> +++ b/src/pixman-renderer.c
>>>> @@ -485,6 +485,8 @@ pixman_renderer_init(struct weston_compositor *ec)
>>>>         if (renderer == NULL)
>>>>                 return -1;
>>>>
>>>> +       renderer->repaint_debug = 0;
>>>> +       renderer->debug_color = NULL;
>>>>
>>>
>>> Alternatively you could change malloc to calloc so the entire struct is
>>> initialized.
>>>
>>
>> True. Though this has the downside that valgrind will not be able to tell
>> you when you are using uninitialized memory. Which is a pretty small
>> downside compared to this bug. What is the general convention in
>> wayland/weston regarding malloc vs. calloc?
>>
>
I think there are enough instances in the code to answer this question.


>
>>
>>>
>>>
>>>>          renderer->base.read_pixels = pixman_renderer_read_pixels;
>>>>         renderer->base.repaint_output = pixman_renderer_repaint_output;
>>>>         renderer->base.flush_damage = pixman_renderer_flush_damage;
>>>> --
>>>> 1.8.1.5
>>>>
>>>> _______________________________________________
>>>> wayland-devel mailing list
>>>> wayland-devel at lists.freedesktop.org
>>>> http://lists.freedesktop.org/mailman/listinfo/wayland-devel
>>>>
>>>
>>>
>>
>
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