Re: g_try_new and g_try_new0 + error reporting for g_object_set

[Stefan Kost <ensonic hora-obscura de>]

As the mail remained uncommented, it has now been posted under
http://bugzilla.gnome.org/show_bug.cgi?id=169611

Stefan

Stefan Kost wrote:
> hi hi,
>
> is there a reason why we dont have g_try_new and g_try_new0.
>
> Why I am asking? We use g_new a lot in our code. Recently we have added a helper
> method to our unit-tests that goes over gobject properties of a given instance
> and does read/write checks.
> This triggered a 'problem'. For one class there is a property denoting the size
> of a data-structure (number of slots). One can write to this property and then
> the datastructure will adapt its size.
> On one hand we do not want to limit the size more than neccesary, so the number
> of entries is a g_ulong. The unit-testing code now tried to set the property to
> the largest ulong and this caused it to abort, as g_new0 wasn't be able to
> allocate that much. Now here would would rather like to notifiy the user that we
> were not be able to perform that operation, than just aborting.
> Therefor the need for g_try_new0.
>
> The second thing is how does one report that a g_object_set failed? All I can
> currently think of is an error-property in the object, which the caller can
> connect a notify handler on and retrieve the GError object in case of a problem.
>
> Sorry if this is a bit offtopic, its more a best-practise question...
>
> Stefan
>
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