[Gambas-devel] someimage.Clear then someimage.Draw raises signal 11

[Benoît Minisini]

> The lines:
> 
>    bwater.Clear
>    bwater.Draw(dwater, 0, 0, 12288, 12288, 0, 0, 96, 96)
> 
> nuke the app. This may be related to the repeated sig 11's I've been
> getting which I was unable to reproduce under valgrind:
> 
> http://old.nabble.com/signal-11-when-rendering-graphics-using-gb.image-td30
> 486119.html
> 
> I'm still getting those, even without the recent someimage.Clear. This
> time I was able to guess the cause and add a breakpoint to identify the
> offending line. Seems the image routines are a bit susceptible to
> crashes, probably trying to write to memory outside the variable
> declaration. I'm currently using gt.gui (gtk) and gb.image.
> 
> FYI, the .Clear was an attempt to erase the image, rather than
> reinitialize it to an undimensioned state. The alpha kept compounding
> itself and needed to be cleared. Maybe there's a better way, such as
> DrawRect...

If you can make a little project that crashes for me. If you need a big image, 
use a blank one, it will be a small file, and it should crash too.

Clear() makes the image void (0x0 in size). Use the Fill(color) method to 
blank it.

Regards,

-- 
Benoît Minisini