ffprobe: print format long_name only if non-NULL

Fix possible crash when long_name is not defined (for example if --enable-small).
12 years ago · 9543cd593e
parent 3aa1b53256
commit 9543cd593e
1 changed files with 2 additions and 1 deletions
--- a/ffprobe.c
+++ b/ffprobe.c
@ -1781,7 +1781,8 @@ static void show_format(WriterContext *w, AVFormatContext *fmt_ctx)
    print_str("filename",         fmt_ctx->filename);
    print_int("nb_streams",       fmt_ctx->nb_streams);
    print_str("format_name",      fmt_ctx->iformat->name);
-    print_str("format_long_name", fmt_ctx->iformat->long_name);
+    if (fmt_ctx->iformat->long_name) print_str    ("format_long_name", fmt_ctx->iformat->long_name);
+    else                             print_str_opt("format_long_name", "unknown");
    print_time("start_time",      fmt_ctx->start_time, &AV_TIME_BASE_Q);
    print_time("duration",        fmt_ctx->duration,   &AV_TIME_BASE_Q);
    if (size >= 0) print_val    ("size", size, unit_byte_str);