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authorMichael Forney <mforney@mforney.org>2021-06-09 14:34:57 -0700
committerJune McEnroe <june@causal.agency>2021-06-09 17:54:26 -0400
commit0a1cfca0f41ca4ee5d981253b8f151c67aacf4f6 (patch)
treea3876a6d59daf3d0ad25832c79b9645d5fc88aa7 /chat.c
parentRemove catf (diff)
downloadcatgirl-0a1cfca0f41ca4ee5d981253b8f151c67aacf4f6.tar.gz
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Avoid creating out-of-bounds pointer when checking for seprintf truncation
It is technically undefined behavior (see C11 6.5.6p8) to construct
a pointer more than one past the end of an array. To prevent this,
compare n with the remaining space in the array before adding to
ptr.
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