[Gambas-user] Get last errno from external function call

[Benoit Minisini]

Le 06/10/2022 à 17:23, Benoit Minisini a écrit :
> Le 06/10/2022 à 17:19, Matheus Castello a écrit :
>>
>>
>> On 10/5/2022 8:30 PM, vuott--- via User wrote:
>>> Out of curiosity, maybe you could also try "System.GetExternSymbol ()":
>>>
>>>     Dim p As Pointer
>>>
>>>     p = System.GetExternSymbol("libgpiod", "errno")
>>>
>>>     Print Int@(p)
>>>
>>>
>>
>> What I was doing previously was getting the pointer reference calling 
>> `__errno_location`: 
>> https://gist.github.com/microhobby/245022469ffbcea1a07a7579839d90a2#file-main-module-L13
>>
>> That works too. What is actually overwriting the errno is the IDE's 
>> Debug session ...
>> If you try to run in the IDE debugger this will not work, this will 
>> return 0 always. (Could you check if its reproducible in your side 
>> please?)
>>
> 
> I can modify the debugger so that is saves and restore 'errno'.
> 

Done in master.

-- 
Benoît Minisini.