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Re: Up-to-date Valgrind suppression file for GLib/GTK+ ?




On 08/02/2016 05:13 PM, Sébastien Wilmet wrote:
> On Tue, Aug 02, 2016 at 01:47:41PM +0100, Philip Withnall wrote:
>> On Mon, 2016-08-01 at 20:10 +0200, Sébastien Wilmet wrote:
>>> So, is there an up-to-date Valgrind suppression file somewhere? Or is
>>> GNOME.supp the most up-to-date?
>> The one I’ve been using is here:
>>
>> https://github.com/pwithnall/walbottle/blob/master/libwalbottle/tests/w
>> albottle.supp
>>
>> It covers most of the GLib and GIO functionality which I’ve been using
>> recently. Enough to get the Walbottle tests Valgrind-clean, at least.
>>
>> I do not claim it’s anything like perfect though.
> I already get much better results with walbottle.supp, at least for the
> tests depending only on GLib/GObject. Thanks a lot!
>
>> This has been discussed before, and I failed to do anything about it:
>>
>> https://bugzilla.gnome.org/show_bug.cgi?id=666114#c28
>>
>> Installing a suppression file with GLib won’t fix everything, because
>> Valgrind only has one default suppression file, which we can’t modify
>> or add to. So even if GLib installed a suppression file, you’d have to
>> pass it as a --suppressions argument to Valgrind manually. However,
>> that is better than having to write your own suppressions file //and//
>> pass it in.
>>
>> See here for information about default.supp:
>>
>> https://wiki.wxwidgets.org/Valgrind_Suppression_File_Howto#Valgrind_and
>> _suppression_files
>>
>> Valgrind has a couple of bugs open about improving its support for
>> default suppressions. None of them have seen activity recently:
>>
>> https://bugs.kde.org/show_bug.cgi?id=93376
>> https://bugs.kde.org/show_bug.cgi?id=160905 (basically a duplicate)
> And thanks for the links. I also think that it would be useful to have a
> suppression file upstream, even if it is incomplete.

Sorry for reviving the thread. What if upstream lib ship a suppression
file and add a pkg-config variable pointing to it? Then apps can use
$PKG_CONFIG --variable=valgrind_suppressions gtk+-3.0
to collect those and e.g. export them into a valgrind wrapper or use
them in the test runners.

Stefan

>
> --
> Sébastien
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