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imgutils: Fix illegal read.

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Found with address sanitizer.

Signed-off-by: Alex Converse <alex.converse@gmail.com>
(cherry picked from commit c693aa6f71b4f539cf9df67ba42f4b1932981687)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
This commit is contained in:
Thierry Foucu 2011-11-18 17:36:50 -08:00 committed by Reinhard Tartler
parent 7347205351
commit 28acce2861
1 changed files with 1 additions and 1 deletions
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libavutil/imgutils.c
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@ -117,7 +117,7 @@ int av_image_fill_pointers(uint8_t *data[4], enum PixelFormat pix_fmt, int heigh
has_plane[desc->comp[i].plane] = 1;
total_size = size[0];
for (i = 1; has_plane[i] && i < 4; i++) {
for (i = 1; i < 4 && has_plane[i]; i++) {
int h, s = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
data[i] = data[i-1] + size[i-1];
h = (height + (1 << s) - 1) >> s;