[FFmpeg-cvslog] avformat/aviobuf: zero initialize the AVIOContext in ffio_init_context()

[James Almer]

ffmpeg | branch: master | James Almer <jamrial at gmail.com> | Wed Feb 14 20:56:21 2018 -0300| [aa6280805e21e1e2c3fb7bb1efb47a27ceeb3fed] | committer: James Almer

avformat/aviobuf: zero initialize the AVIOContext in ffio_init_context()

This makes sure no field is ever used uninitialized.

Reviewed-by: Carl Eugen Hoyos <ceffmpeg at gmail.com>
Reviewed-by: wm4 <nfxjfg at googlemail.com>
Signed-off-by: James Almer <jamrial at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=aa6280805e21e1e2c3fb7bb1efb47a27ceeb3fed
---

 libavformat/aviobuf.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c
index 86eb6579f4..d63db3897f 100644
--- a/libavformat/aviobuf.c
+++ b/libavformat/aviobuf.c
@@ -87,6 +87,8 @@ int ffio_init_context(AVIOContext *s,
                   int (*write_packet)(void *opaque, uint8_t *buf, int buf_size),
                   int64_t (*seek)(void *opaque, int64_t offset, int whence))
 {
+    memset(s, 0, sizeof(AVIOContext));
+
     s->buffer      = buffer;
     s->orig_buffer_size =
     s->buffer_size = buffer_size;
@@ -135,7 +137,7 @@ AVIOContext *avio_alloc_context(
                   int (*write_packet)(void *opaque, uint8_t *buf, int buf_size),
                   int64_t (*seek)(void *opaque, int64_t offset, int whence))
 {
-    AVIOContext *s = av_mallocz(sizeof(AVIOContext));
+    AVIOContext *s = av_malloc(sizeof(AVIOContext));
     if (!s)
         return NULL;
     ffio_init_context(s, buffer, buffer_size, write_flag, opaque,