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| author | Pierre Joye <pierre.php@gmail.com> | 2021-08-31 18:48:20 +0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-08-31 18:48:20 +0700 |
| commit | 9251cd60d0414027b634090d3ccc4bc846fb8eef (patch) | |
| tree | de8e37b0529edf440c254085acdcc92236df4fee /src | |
| parent | deb696dbef8389f75c2924df85b7a3dac56fbe29 (diff) | |
| parent | 4cd5542152afa8409e688297164a08bf03440197 (diff) | |
| download | libgd-9251cd60d0414027b634090d3ccc4bc846fb8eef.tar.gz | |
Merge pull request #736 from libgd/bug/415
Fix #415, Assuming TopOfs and LeftOfs zero, we can safely skip any (x…
Diffstat (limited to 'src')
| -rw-r--r-- | src/gd_gif_out.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/gd_gif_out.c b/src/gd_gif_out.c index f1d73fd..526a221 100644 --- a/src/gd_gif_out.c +++ b/src/gd_gif_out.c @@ -745,6 +745,8 @@ break_top: /* Then the bottom row */ for (y = tim->sy - 1; y > min_y; --y) { for (x = 0; x < tim->sx; ++x) { + if (!gdImageBoundsSafe(prev_tim, x,y)) + continue; if (!comparewithmap (prev_tim, tim, prev_tim->pixels[y][x], @@ -766,6 +768,8 @@ break_bot: /* left side */ for (x = 0; x < min_x; ++x) { for (y = min_y; y <= max_y; ++y) { + if (!gdImageBoundsSafe(prev_tim, x,y)) + continue; if (!comparewithmap (prev_tim, tim, prev_tim->pixels[y][x], @@ -781,6 +785,8 @@ break_left: /* right side */ for (x = tim->sx - 1; x > max_x; --x) { for (y = min_y; y <= max_y; ++y) { + if (!gdImageBoundsSafe(prev_tim, x,y)) + continue; if (!comparewithmap (prev_tim, tim, prev_tim->pixels[y][x], |