* src/pshinter/pshrec.c (t2_hints_stems): Mask numeric overflow.

Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=10215
6 years ago · 7b855ed9cf
parent fea435fbf8
commit 7b855ed9cf
2 changed files with 9 additions and 1 deletions
--- a/8
+++ b/8
@ -1,3 +1,11 @@
+2018-09-10  Armin Hasitzka  <prince.cherusker@gmail.com>
+
+	* src/pshinter/pshrec.c (t2_hints_stems): Mask numeric overflow.
+
+	Reported as
+
+	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=10215
+
 2018-09-09  Ben Wagner  <bungeman@google.com>

 	* builds/freetype.mk (refdoc-venv): Ensure python version (#54631).
--- a/src/pshinter/pshrec.c
+++ b/src/pshinter/pshrec.c
@ -1187,7 +1187,7 @@
      /* compute integer stem positions in font units */
      for ( n = 0; n < count * 2; n++ )
      {
-        y       += coords[n];
+        y        = ADD_LONG( y, coords[n] );
        stems[n] = FIXED_TO_INT( y );
      }