diff options
| author | Werner Lemberg <wl@gnu.org> | 2022-03-19 06:40:17 +0100 |
|---|---|---|
| committer | Werner Lemberg <wl@gnu.org> | 2022-03-19 06:40:17 +0100 |
| commit | 22a0cccb4d9d002f33c1ba7a4b36812c7d4f46b5 (patch) | |
| tree | 728713934a8c168dcaab31e35e2499c06a91bab7 | |
| parent | 53dfdcd8198d2b3201a23c4bad9190519ba918db (diff) | |
| download | freetype2-22a0cccb4d9d002f33c1ba7a4b36812c7d4f46b5.tar.gz | |
* src/base/ftobjs.c (ft_open_face_internal): Properly guard `face_index`.
We must ensure that the cast to `FT_Int` doesn't change the sign.
Fixes #1139.
| -rw-r--r-- | src/base/ftobjs.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/base/ftobjs.c b/src/base/ftobjs.c index 2c0f0e6c9..10952a6c6 100644 --- a/src/base/ftobjs.c +++ b/src/base/ftobjs.c @@ -2527,6 +2527,15 @@ #endif + /* only use lower 31 bits together with sign bit */ + if ( face_index > 0 ) + face_index &= 0x7FFFFFFFL; + else + { + face_index &= 0x7FFFFFFFL; + face_index = -face_index; + } + #ifdef FT_DEBUG_LEVEL_TRACE FT_TRACE3(( "FT_Open_Face: " )); if ( face_index < 0 ) |