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List:       freedesktop-xorg
Subject:    Re: XPutImage() Seg Fault
From:       Glynn Clements <glynn () gclements ! plus ! com>
Date:       2015-01-27 15:38:34
Message-ID: 21703.45306.533649.664109 () cerise ! gclements ! plus ! com
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Richard Overstreet wrote:

>  displaydata = (unsigned char *)calloc(ROWS*COLS*2, sizeof(unsigned char));
> 
>  
>  
> Picture=XCreateImage(Monitor,DefaultVisual(Monitor,0),
>         DefaultDepth(Monitor,0),

Is the display depth actually 16 bpp? If it's 32 bpp, the XPutImage
call will try to copy twice as much data as you've allocated, which
may well result in a segfault.

-- 
Glynn Clements <glynn@gclements.plus.com>
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