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[FFmpeg-devel,v2,1/3] avcodec/movtextenc: Fix potential use of uninitialized value

Message ID 20201016031758.214795-1-andreas.rheinhardt@gmail.com
State Superseded
Headers show
Series [FFmpeg-devel,v2,1/3] avcodec/movtextenc: Fix potential use of uninitialized value
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Context Check Description
andriy/x86_make success Make finished
andriy/x86_make_fate success Make fate finished

Commit Message

Andreas Rheinhardt Oct. 16, 2020, 3:17 a.m. UTC
Background colour was never initialized if no style was available.
Use a sane default of zero (i.e. completely transparent).

Fixes Coverity issue #1461471.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Commit message updated to include Coverity issue.

 libavcodec/movtextenc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/libavcodec/movtextenc.c b/libavcodec/movtextenc.c
index 5f60b8db61..11db240ab7 100644
--- a/libavcodec/movtextenc.c
+++ b/libavcodec/movtextenc.c
@@ -205,7 +205,7 @@  static int encode_sample_description(AVCodecContext *avctx)
     ASS *ass;
     ASSStyle *style;
     int i, j;
-    uint32_t tsmb_size, tsmb_type, back_color, style_color;
+    uint32_t tsmb_size, tsmb_type, back_color = 0, style_color;
     uint16_t style_start, style_end, fontID, count;
     int font_names_total_len = 0;
     MovTextContext *s = avctx->priv_data;