[AWS] AWS GPL 2011 / Random Tasking_Error (aws-utils.adb:759) on applicatoin launch

[David SAUVAGE - AdaLabs Ltd]

Pascal,

it is not at elaboration, but during the first lines of my application
execution, here is the calls before the SIGSEGV:

1. [application code] AWS.Log.Write (Log_Object, S);
2. [aws-log.adb:492] Write_Log ...
3. system.tasking.protected_objects.operation.protected_entry_call
4. system.tasking.protected_objects.operation.po_do_or_queue
=> SIGSEGV, Segmentation fault.


AWS.Log.Start (Log_Object, ...);  as been called before the
AWS.Log.Write (Log_Object, S);
Is there any other conditions to ensure before using a data of type
AWS.Log.Object declared at library level ?

I replaced the AWS.Log.Write call with Ada.Text_IO.Put_Line and the
issue did not occur.

This issue is not systematic. It can stop occurring after recompilation
or re-run.

Cheers,


David SAUVAGE

Software Agile Architect, Director
AdaLabs Ltd - Mauritius
http://adalabs.com
+230 428 18 32
skype sauvaged
BRN C10097052
VAT 27035043


Le 20/01/2012 23:07, David SAUVAGE - AdaLabs Ltd a écrit :
> Pascal,
>
> Le 22/12/2011 19:29, Pascal Obry a écrit :
>> Would be nice to have a reproducer indeed.
> The issue is occurring again,
>
> when I debug the application using GPS debug session I got the following
> error (at elaboration) I suppose.
>
> Program received signal SIGSEGV, Segmentation fault.
> 0xb7750373 in system.tasking.protected_objects.operations.po_do_or_queue
> () from
> <gnat_install_path>/lib/gcc/i686-pc-linux-gnu/4.5.3/adalib/libgnarl-2011.so
>
> Currently, I don't know if this is related or not, but it is the first
> time I have this.
>
> any tips on how to proceed is most welcome ...
>
> Cheers,
>
> David SAUVAGE
>
> Software Agile Architect, Director
> AdaLabs Ltd - Mauritius
> http://adalabs.com
> +230 428 18 32
> skype sauvaged
> BRN C10097052
> VAT 27035043
>
>