[base] Fix numeric overflow.

Reported as https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11080 * src/base/ftoutln.c (FT_Outline_Get_Orientation): Use `MUL_LONG'.
6 years ago · c13635ee4b
parent ba62f9d8f5
commit c13635ee4b
2 changed files with 12 additions and 1 deletions
--- a/10
+++ b/10
@ -1,3 +1,13 @@
+2018-10-29  Werner Lemberg  <wl@gnu.org>
+
+	[base] Fix numeric overflow.
+
+	Reported as
+
+	  https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11080
+
+	* src/base/ftoutln.c (FT_Outline_Get_Orientation): Use `MUL_LONG'.
+
 2018-10-29  Werner Lemberg  <wl@gnu.org>

 	[cff] Fix numeric overflow.
--- a/src/base/ftoutln.c
+++ b/src/base/ftoutln.c
@ -1076,7 +1076,8 @@
        v_cur.y = points[n].y >> yshift;

        area = ADD_LONG( area,
-                         ( v_cur.y - v_prev.y ) * ( v_cur.x + v_prev.x ) );
+                         MUL_LONG( v_cur.y - v_prev.y,
+                                   v_cur.x + v_prev.x ) );

        v_prev = v_cur;
      }