[serialize] Catch signedness overflows in check_assign()

Should address https://github.com/harfbuzz/harfbuzz/pull/2163#pullrequestreview-355137936
2020-02-12 15:41:21 +00:00 · 2020-02-12 15:41:21 +00:00 · d663e28af1
parent 97229244eb
commit d663e28af1
1 changed files with 1 additions and 1 deletions
--- a/src/hb-serialize.hh
+++ b/src/hb-serialize.hh
@ -123,7 +123,7 @@ struct hb_serialize_context_t

  template <typename T1, typename T2>
  bool check_equal (T1 &&v1, T2 &&v2)
-  { return check_success (v1 == v2); }
+  { return check_success ((long long) v1 == (long long) v2); }

  template <typename T1, typename T2>
  bool check_assign (T1 &v1, T2 &&v2)