[FFmpeg-devel] [PATCH] configure: reenable tree vectorization for GCC

[Michael Niedermayer]

On Fri, Jul 03, 2020 at 11:21:55PM +0200, Steinar H. Gunderson wrote:
> On Fri, Jul 03, 2020 at 10:42:04PM +0200, Michael Niedermayer wrote:
> > 230	                    v = av_be2ne16(((uint16_t *)s->bytestream)[j]);
> 
> Dereferencing an unaligned uint16_t* is UB, indeed. I've seen similar code
> break on ARM, with no -ftree-vectorize.

yes, just posted a patch to fix the obvious such cases from pnmdec
this also fixes this tree vectorize segfault

thx

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

What does censorship reveal? It reveals fear. -- Julian Assange
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