[Lazarus] Access violation at current svn

[Sven Barth]

On 13.06.2016 16:42, Ondrej Pokorny wrote:
> On 13.06.2016 16:33, Lukas Gradl wrote:
>> Hi!
>>
>> I tried to update my Lazarus svn to the current revision (52501) on a
>> debian jessie x86_64 machine.
>> I compiled it by make clean;make all using fpc 3.1.1 from today.
>>
>> The comilation finishes successfully, but on starting lazarus I get a
>> window "Read error" "Access violation Access violation".
> 
> It's a known issue. It's due to the recent FPC changes (PTypeInfo ->
> PPTypeInfo). Lazarus designer sources haven't been updated to handle
> these changes yet.
> 
> I recommend you to compile Lazarus with FPC 3.0 fixes branch or with FPC
> trunk rev 33943 until it gets sorted out. You can stil compile your own
> applications with the most recent FPC trunk.

The fix done in r52482 is not correct however. ClassInfo will continue
to return a PTypeInfo for backwards compatibility, so you'll need to
dynamically allocate a pointer variable that gets that type info and
then gets stuffed into the ParentInfoRef field.

Regards,
Sven