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authorLibravatar Steve Hoelzer <shoelzer@gmail.com>2018-10-31 14:11:36 -0700
committerLibravatar Junio C Hamano <gitster@pobox.com>2018-11-05 13:02:42 +0900
commite8dfcace316aaaca226c2ae2d268bcc4d3131b38 (patch)
tree8baa89194ed437fdaf34c0eed80241d080afc219 /t/t0013
parentSeventh batch for 2.20 (diff)
downloadtgif-e8dfcace316aaaca226c2ae2d268bcc4d3131b38.tar.xz
poll: use GetTickCount64() to avoid wrap-around issues
The value of timeout starts as an int value, and for this reason it cannot overflow unsigned long long aka ULONGLONG. The unsigned version of this initial value is available in orig_timeout. The difference (orig_timeout - elapsed) cannot wrap around because it is protected by a conditional (as can be seen in the patch text). Hence, the ULONGLONG difference can only have values that are smaller than the initial timeout value and truncation to int cannot overflow. Signed-off-by: Steve Hoelzer <shoelzer@gmail.com> [j6t: improved both implementation and log message] Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't/t0013')
0 files changed, 0 insertions, 0 deletions