avcodec/jpeg2000dwt: Fix left shift of negative number

Fixes the j2k-dwt FATE-test; also fixes #9945. (I don't know whether the multiplication can overflow.) Reviewed-by: Tomas Härdin <git@haerdin.se> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2 years ago · fff010591b
parent 3d8754cd09
commit fff010591b
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/jpeg2000dwt.c
+++ b/libavcodec/jpeg2000dwt.c
@ -81,7 +81,7 @@ static void sd_1d53(int *p, int i0, int i1)

    if (i1 <= i0 + 1) {
        if (i0 == 1)
-            p[1] <<= 1;
+            p[1] *= 2;
        return;
    }