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* src/base/ftbitmap.c (FT_Bitmap_Blend): Avoid integer overflow.

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Werner Lemberg 2018-06-16 10:11:58 +02:00
parent 68bc56f864
commit 9d8e6c2980
2 changed files with 9 additions and 2 deletions
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ChangeLog
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@ -1,3 +1,7 @@
2018-06-16 Werner Lemberg <wl@gnu.org>
* src/base/ftbitmap.c (FT_Bitmap_Blend): Avoid integer overflow.
2018-06-16 Werner Lemberg <wl@gnu.org>
Add `FT_Bitmap_Blend' API.

7
src/base/ftbitmap.c
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@ -901,8 +901,11 @@
source_llx -= final_llx;
source_lly -= final_lly;
target_llx -= final_llx;
target_lly -= final_lly;
if ( target->width && target->rows )
{
target_llx -= final_llx;
target_lly -= final_lly;
}
/* set up target bitmap */
if ( target->pixel_mode == FT_PIXEL_MODE_NONE )