Tim Ruffing ec8f20babd Avoid out-of-bound pointers and integer overflows in size comparisons
This changes pointer calculations in size comparions to a form that
ensures that no out-of-bound pointers are computed, because even their
computation yields undefined behavior.
Also, this changes size comparions to a form that ensures that neither
the left-hand side nor the right-hand side can overflow.
2019-05-23 15:22:29 +02:00
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