[FFmpeg-devel] [PATCH 2/2] avformat/fitsenc: fill header line with spaces

[Paras Chadha]

Signed-off-by: Paras Chadha <paraschadha18 at gmail.com>
---
This fixes the failed fate tests on msvc12:
http://fate.ffmpeg.org/report.cgi?time=20170901190511&slot=x86_32-msvc12-windows-native
http://fate.ffmpeg.org/report.cgi?time=20170901211336&slot=x86_64-msvc12-windows-native

Tests failed because snprintf was filling the buffer with '\0' chars
after printing.

 libavformat/fitsenc.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavformat/fitsenc.c b/libavformat/fitsenc.c
index 0dcdcdf..1a4b7c2 100644
--- a/libavformat/fitsenc.c
+++ b/libavformat/fitsenc.c
@@ -47,7 +47,7 @@ static int fits_write_header(AVFormatContext *s)
  */
 static int write_keyword_value(AVFormatContext *s, const char *keyword, int value, int *lines_written)
 {
-    int len, ret;
+    int len, ret, i;
     uint8_t header[80];

     len = strlen(keyword);
@@ -58,7 +58,9 @@ static int write_keyword_value(AVFormatContext *s, const char *keyword, int valu
     header[9] = ' ';

     ret = snprintf(header + 10, 70, "%d", value);
-    header[ret + 10] = ' ';
+    for (i = ret + 10; i < 80; i++) {
+        header[i] = ' ';
+    }

     avio_write(s->pb, header, sizeof(header));
     *lines_written += 1;
--
2.4.11