[Qgis-developer] Access violation - no RTTI data

[Nyall Dawson]

On 17 October 2016 at 18:24, Matthias Kuhn <matthias at opengis.ch> wrote:
> Hi Tom,
>
> RTTI is some low-level C++ functionality to determine an objects type
> (roughly equivalent to `type(myobject)` in python). It can be enabled
> and disabled during compilation. Apparently it was disabled on your QGIS
> build.

Wouldn't that cause a ton of other errors though? It's used pretty
heavily all throughout QGIS, and there's many other sip classes
relying on it...

Nyall



>
> The bad news: QGIS uses this information to determine which type of
> symbollayer is in use.
>
> The good news: This can be fixed, I've just fixed it in master [1].
> Please let me know if you need this backported and where to (so you can
> test).
>
> Matthias
>
> [1]
> https://github.com/qgis/QGIS/commit/8fa3127c66220ad338ea9a1b367b0d78c56c9067
>
> On 10/16/2016 01:14 PM, Tom Chadwin wrote:
>> So RTTI is info about object data types at runtime? Is the print unable to
>> determine the symbollayer or symbollayerlist (or whatever the latter is)
>> type? Why?
>>
>> Obviously, my aim is not to print, but to use the data. However, the error
>> occurred before I used print to investigate the problem.
>>
>> Can anyone help?
>>
>>
>>
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