[FFmpeg-cvslog] tools/opt_common: Check for malloc failure

[Michael Niedermayer]

ffmpeg | branch: release/5.1 | Michael Niedermayer <michael at niedermayer.cc> | Sun Apr 28 18:33:24 2024 +0200| [b0754513f481a37f17921286052346e394cd04a6] | committer: Michael Niedermayer

tools/opt_common: Check for malloc failure

Fixes: CID1539100 Negative loop bound

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit ba7038043a46420bc86b060dbb13b956ea50ac03)
Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b0754513f481a37f17921286052346e394cd04a6
---

 fftools/opt_common.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/fftools/opt_common.c b/fftools/opt_common.c
index ae5e28a5af..938a6a66c9 100644
--- a/fftools/opt_common.c
+++ b/fftools/opt_common.c
@@ -722,10 +722,13 @@ int show_codecs(void *optctx, const char *opt, const char *arg)
     return 0;
 }
 
-static void print_codecs(int encoder)
+static int print_codecs(int encoder)
 {
     const AVCodecDescriptor **codecs;
-    unsigned i, nb_codecs = get_codecs_sorted(&codecs);
+    int i, nb_codecs = get_codecs_sorted(&codecs);
+
+    if (nb_codecs < 0)
+        return nb_codecs;
 
     printf("%s:\n"
            " V..... = Video\n"
@@ -759,18 +762,17 @@ static void print_codecs(int encoder)
         }
     }
     av_free(codecs);
+    return 0;
 }
 
 int show_decoders(void *optctx, const char *opt, const char *arg)
 {
-    print_codecs(0);
-    return 0;
+    return print_codecs(0);
 }
 
 int show_encoders(void *optctx, const char *opt, const char *arg)
 {
-    print_codecs(1);
-    return 0;
+    return print_codecs(1);
 }
 
 int show_bsfs(void *optctx, const char *opt, const char *arg)