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authorLibravatar Jeff King <peff@peff.net>2016-02-22 17:44:28 -0500
committerLibravatar Junio C Hamano <gitster@pobox.com>2016-02-22 14:51:09 -0800
commit3733e6946465d4a3a1d89026a5ec911d3af339ab (patch)
tree687aa6252267a70f503904d635f44600eb3bfae7 /t/t7605-merge-resolve.sh
parentconvert trivial cases to ALLOC_ARRAY (diff)
downloadtgif-3733e6946465d4a3a1d89026a5ec911d3af339ab.tar.xz
use xmallocz to avoid size arithmetic
We frequently allocate strings as xmalloc(len + 1), where the extra 1 is for the NUL terminator. This can be done more simply with xmallocz, which also checks for integer overflow. There's no case where switching xmalloc(n+1) to xmallocz(n) is wrong; the result is the same length, and malloc made no guarantees about what was in the buffer anyway. But in some cases, we can stop manually placing NUL at the end of the allocated buffer. But that's only safe if it's clear that the contents will always fill the buffer. In each case where this patch does so, I manually examined the control flow, and I tried to err on the side of caution. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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