df0d74dca4
While the code checks for the possibility that leftMillis-rightMillis
may overflow, it fails to take into account that the result may be
minimal ("INT64_MIN", so to speak) and passes it to qAbs, triggering UB
in there. Since it's just a range check and we don't need the result to
be signed, use qUnsignedAbs.
Change-Id: I7f1a4bbc521fdc164ca20fedf0e995359a67ea4d
Pick-to: 6.8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
(cherry picked from commit 45e90b73c75b2c7997a0f8d750f9927f64e05a0e)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>