On Tue, Apr 18, 2017 at 11:04:34AM +0200, Carl Eugen Hoyos wrote: > Hi! > > Attached patch fixes the following ubsan errors: > libavcodec/motion_est.c:959:42: runtime error: left shift of negative > value -16 > libavcodec/motion_est.c:960:42: runtime error: left shift of negative > value -16 > > I do not have a testcase for lines 961f. > > Please comment, Carl Eugen
> motion_est.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > 835e20f48e7c0b1df3bdba09f3723e21a4cfd155 > 0001-lavc-motion_est-Fix-undefined-negative-left-shifts.patch > From 4dd1b8d61c5dd2e77b7c855a1d2acf7d90277daf Mon Sep 17 00:00:00 2001 > From: Carl Eugen Hoyos <ceho...@ag.or.at> > Date: Tue, 18 Apr 2017 11:02:30 +0200 > Subject: [PATCH] lavc/motion_est: Fix undefined negative left shifts. LGTM thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Rewriting code that is poorly written but fully understood is good. Rewriting code that one doesnt understand is a sign that one is less smart then the original author, trying to rewrite it will not make it better.
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