[FFmpeg-cvslog] asrc_aevalsrc: Fix use of uninitialized pointer inside av_strtok()

[Michael Niedermayer]

ffmpeg | branch: release/0.10 | Michael Niedermayer <michaelni at gmx.at> | Thu Oct 11 03:00:34 2012 +0200| [ba10ea845f413d0dff45c8c5381b48f78155f5dc] | committer: Michael Niedermayer

asrc_aevalsrc: Fix use of uninitialized pointer inside av_strtok()

Fixes CID733842
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
(cherry picked from commit 989c91b5042c19c9914a3b205b1ca6e1598c66ba)

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ba10ea845f413d0dff45c8c5381b48f78155f5dc
---

 libavfilter/asrc_aevalsrc.c |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libavfilter/asrc_aevalsrc.c b/libavfilter/asrc_aevalsrc.c
index 7bd6a89..63fe916 100644
--- a/libavfilter/asrc_aevalsrc.c
+++ b/libavfilter/asrc_aevalsrc.c
@@ -95,6 +95,12 @@ static int init(AVFilterContext *ctx, const char *args, void *opaque)
     eval->class = &eval_class;
     av_opt_set_defaults(eval);
 
+    if (!args1) {
+        av_log(ctx, AV_LOG_ERROR, "Argument is empty\n");
+        ret = args ? AVERROR(ENOMEM) : AVERROR(EINVAL);
+        goto end;
+    }
+
     /* parse expressions */
     buf = args1;
     i = 0;