On Mon, Apr 10, 2017 at 02:42:42PM +0200, Clément Bœsch wrote: > On Mon, Apr 10, 2017 at 02:19:54PM +0200, Michael Niedermayer wrote: > > On Mon, Apr 10, 2017 at 02:04:30PM +0200, Clément Bœsch wrote: > > > On Mon, Apr 10, 2017 at 01:37:54PM +0200, Michael Niedermayer wrote: > > > > On Mon, Apr 10, 2017 at 08:02:34AM +0200, Clément Bœsch wrote: > > > > > On Sun, Apr 09, 2017 at 11:10:16PM -0300, James Almer wrote: > > > > > [...] > > > > > > > is this a regression ? > > > > > > > > > > > > Fate didn't always complain about this, so it's either something > > > > > > introduced by a change in our tree, or a valgrind bug introduced in > > > > > > a > > > > > > relatively recent version. > > > > > > > > > > > > > > > > > The reports in > > > > > > http://fate.ffmpeg.org/history.cgi?slot=x86_64-archlinux-gcc-valgrindundef > > > > > > are kinda broken and report a nonsense commit as the "last known > > > > > > good > > > > > > ref", so i can't say when it started failing. > > > > > > > > > > That was because I couldn't upgrade for a long time and bumped both > > > > > GCC > > > > > and Valgrind (and actually the whole system) at once. Sorry, I > > > > > couldn't do > > > > > it gradually. > > > > > > > > does your fate client have optimizations enabled ? > > > > i dont see them being disabled, and iam not sure valgrind + full > > > > compiler optimizations are a good idea > > > > > > > > if they are enabled, please try to disable them to check if that > > > > causes the false positives > > > > > > > > > > Yeah actually, only --extra-cflags=-fno-tree-vectorize is needed to make > > > fate-vsynth3-svq1 pass. I thought it was supposed to be disabled? > > > > > > > my local valgrind shows nothing for svq1 > > > > > > > > With aed84ee4d reverted? --toolchain=valgrind-memcheck > > > --disable-stripping? > > > > reverted, yes > > no toolchain, no stripping just tried it under valgrind > > > > but thats with a relativly old gcc > > > > Actually i was wrong: the GCC option that makes valgrind go crazy is > unswitch-loops, not tree-vectorize. Do you have it in your GCC?
its in man gcc on the box i tried on. maybe gcc has improved between version 4 an 6 but it doesnt really matter if it fixes all the false positives, please add it and then lets revert the workaround (s?) thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Freedom in capitalist society always remains about the same as it was in ancient Greek republics: Freedom for slave owners. -- Vladimir Lenin
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