[Lazarus] really strange messagedlg hang

[Martin Frb]

On 10/06/2019 12:40, Luca Olivetti via lazarus wrote:
> El 1/6/19 a les 12:18, Luca Olivetti via lazarus ha escrit:
>> El 31/5/19 a les 17:16, Luca Olivetti via lazarus ha escrit:
>>
>>> If I recompile it with lazarus 2.0.2[*]/fpc 3.2.beta (cannot use 
>>> 3.0.2 due to the above mentioned thread issue) the problem disappears.
>>
>> It also disappears (with lazarus 1.6.4/fpc 2.6.4) if I turn off the 
>> option "use manifest file to enable themes"
>>
>>> Any idea?
>>
>> The question still stands. Maybe a bug with themes in lazarus 1.6.4?
>
> Nobody?

There were several issues in fpc thread sync related code. Not sure if 
any of those may be related to your issue.

https://bugs.freepascal.org/view.php?id=35027
https://bugs.freepascal.org/view.php?id=35028
https://bugs.freepascal.org/view.php?id=34640