Re: draw_rgb_32_image sigsegv

[<james jwm-art net>]

On 31/8/2006, "Paul Davis" <paul linuxaudiosystems com> wrote:

>On Wed, 2006-08-30 at 22:57 +0000, james jwm-art net wrote:
>> Hello,
>>
>> My program has a drawable to display gfx, using a custom event_expose
>> callback to redraw the gfx as needed via draw_rgb_32_image. It works
>> perfectly fine until I increase the image size by a factor greater than
>> 1.73.  No matter which size image the program starts with, if it's size
>> is increased by a factor greater than 1.73, it seg faults, (or if it's
>> reduced to less than 80 px).
>
>perfect signature of a memory overrun bug. your code is likely writing
>(or possibly reading) from memory that it should not be. doing this will
>not necessarily produce an error at the point where the writing is done
>- it frequently shows up later when other code that relies on values
>being sane discovers that they are not.
>

Hmm, I feared as much, have failed to track down such things by code
inspection. I'll try valgrind.

Thanks.