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authorJeff King <peff@peff.net>2014-02-24 02:39:45 -0500
committerJunio C Hamano <gitster@pobox.com>2014-02-24 10:12:58 -0800
commit7ca36d9398a85e7974d04f8fbd2c6adb088290e1 (patch)
treee3ef065ab5fee09448ad78239edefb09c9ca927a /t
parentd4b8de0420ffcc7a654ddc6c69a96d3c1b25b4fa (diff)
downloadgit-7ca36d9398a85e7974d04f8fbd2c6adb088290e1.tar.gz
date: check date overflow against time_t
When we check whether a timestamp has overflowed, we check only against ULONG_MAX, meaning that strtoul has overflowed. However, we also feed these timestamps to system functions like gmtime, which expect a time_t. On many systems, time_t is actually smaller than "unsigned long" (e.g., because it is signed), and we would overflow when using these functions. We don't know the actual size or signedness of time_t, but we can easily check for truncation with a simple assignment. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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