SIGBUS error

varun_shrivastava · 11-05-2007, 07:54 AM

hi
i wrote a gtk application for embedded device, and it was giving SIGBUS error. But i figured out the problem.

Actually i tried to set the size of the window larger than the screen present on embedded device.

So when i commented out that line, the application worked fine.

So my question is: Does setting window size more than the actual size of screen should give SIGBUS error?

Mara · 11-06-2007, 05:14 PM

SIGBUS is, in many cases an equivalent to SIGSEGV. It means it happens when you write to the memory that is not allocated to your program, for instance. I guess that was just the case (writing to window outside the allocated area for the whole screen).

It should not end with such an error, however. The function you use to draw should notice that the location is out of the available area size and exit with a more 'gentle' error.

Alien_Hominid · 11-07-2007, 01:04 AM

I don't know how this device operates, but setting your window larger than the screen shouldn't be a problem if you don't work with the screen directly. You should get magnified effect, that's all.