XCreatePixmap returns BadAlloc for a 8300 wide image in latest git

[Barry Scott]

Alan Coopersmith wrote:
> Barry Scott wrote:
>> The limit on pixmap size used to be 32767 (32768?) but our code is 
>> getting
>> a BadAlloc of a pixmap that is 8300 wide.
>>
>> Why has the limit been changed and why can't it be set back to its 
>> original limit?
>
> This may be a bug in the pixmap overflow security fixes from 2005 - I 
> know
> one of our engineers working on the cfb version of the fixes found 
> that they
> over-limited by a factor of 4 because they checked the PaddedByte size
> instead of the pixel width, so limited 32-bit pixmaps to a width of 
> 8191 instead of 32767.
>
2005? This change happened between Xorg 7.2 and latest git. Has this 
security fix
been made recently?

Barry