On Thu, Jul 28, 2016 at 11:50:47AM +0200, Michael Niedermayer wrote: > On Mon, Jul 18, 2016 at 11:36:49PM +0800, Zhao Zhili wrote: > > --- > > libavutil/mem.h | 6 +++--- > > 1 file changed, 3 insertions(+), 3 deletions(-) > > > > diff --git a/libavutil/mem.h b/libavutil/mem.h > > index d25b322..9dd9099 100644 > > --- a/libavutil/mem.h > > +++ b/libavutil/mem.h > > @@ -99,14 +99,14 @@ av_alloc_size(1, 2) static inline void > > *av_malloc_array(size_t nmemb, size_t siz > > > > /** > > * Allocate or reallocate a block of memory. > > - * If ptr is NULL and size > 0, allocate a new block. If > > - * size is zero, free the memory block pointed to by ptr. > > + * If ptr is NULL and size > 0, allocate a new block. The memory block > > pointed > > + * to by ptr won't be freed even when size is zero. > > av_realloc() can certainly free the source pointed to > be ptr as it sees fit during reallocation also when the size is 0. > > we could document it either as
> The behavior with size 0 may be that an allocated array of small size > is returned instead of the null pointer and complete deallocation this in fact also doesnt work as description, as it would leave identifying realloc errors with size 0 impossible > or With size 0 an allocated array of minimal size is provided, accesses > into such size 0 array result in undefined behavior. > > or similar > > question is how much room for changes we want ... > > > [...] > > -- > Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB > > Those who are too smart to engage in politics are punished by being > governed by those who are dumber. -- Plato > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Modern terrorism, a quick summary: Need oil, start war with country that has oil, kill hundread thousand in war. Let country fall into chaos, be surprised about raise of fundamantalists. Drop more bombs, kill more people, be surprised about them taking revenge and drop even more bombs and strip your own citizens of their rights and freedoms. to be continued
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