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| author | Clément Bœsch <ubitux@gmail.com> | 2012-12-30 09:53:48 +0400 |
|---|---|---|
| committer | Carl Eugen Hoyos <cehoyos@ag.or.at> | 2013-01-01 21:27:28 +0400 |
| commit | 20940780c72605207783880dfd1d3c2741151abf (patch) | |
| tree | 17c4f661186853d53aa25d4a2ee7ba349da0e80f | |
| parent | 3ed505863b067e73eee837a9e9f76efdbc692142 (diff) | |
lavc/ass_split: check for NULL pointer in ff_ass_split_override_codes().
This is consistent with the other ff_ass_split_* functions.
It also fixes a crash when trying to split a dialog with text=NULL
(which seems to happen when the text of the dialog is empty); basically,
this commit fixes crashes when trying to encode an empty text subtitle
dialog (see subrip and mov_text encoders).
Fixes Ticket2048.
(cherry picked from commit c83002a4f8042ccfa0688a9a18e8fa0369c1fda8)
| -rw-r--r-- | libavcodec/ass_split.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/ass_split.c b/libavcodec/ass_split.c index 2a3b76445e..33c1c2714f 100644 --- a/libavcodec/ass_split.c +++ b/libavcodec/ass_split.c @@ -366,7 +366,7 @@ int ff_ass_split_override_codes(const ASSCodesCallbacks *callbacks, void *priv, char new_line[2]; int text_len = 0; - while (*buf) { + while (buf && *buf) { if (text && callbacks->text && (sscanf(buf, "\\%1[nN]", new_line) == 1 || !strncmp(buf, "{\\", 2))) { |