Re: [vim/vim] Add hardcopy print backend using Pango + Cairo (PR #20648)

ashamedbit left a comment (vim/vim#20648)

The following lines: 
if (n > 0 && (size_t)(gap->ga_len + n) > SIZE_MAX / gap->ga_itemsize)

If  gap->ga_itemsize is 0, this can lead to Divide by zero. ga_itemsize is, typically set once via ga_init2(gap, itemsize, growsize) when the array is initialized. There is no check against this value of 0 tho.

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