[Pixman] [PATCH] Fix arithmetic overflow in pointer arithmetic in ‘general_composite_rect’

[Bill Spitzak]

On Mon, Sep 21, 2015 at 10:07 PM, Søren Sandmann <soren.sandmann at gmail.com>
wrote:

> Sure. The extra width check can't harm.
>

Actually it can, because it implies that such values *can* arrive at this
function, leading programmers to add tests to the calling functions, thus
leading to a large number of tests for conditions that cannot happen.

I would prefer to see an assert(width > 0) there.
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