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Commit 8732ec40 authored by Daniel Stenberg's avatar Daniel Stenberg
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aprintf: detect wrap-around when growing allocation 

On 32bit systems we could otherwise wrap around after 2GB and allocate 0
bytes and crash.

CVE-2016-8618

Bug: https://curl.haxx.se/docs/adv_20161102D.html
Reported-by: Cure53
parent ee4f7660
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