Minor

src/hb.hh

@@ -446,11 +446,11 @@ typedef uint64_t hb_vector_size_impl_t;
  * For example, for testing "x ∈ {x1, x2, x3}" use:
  * (FLAG_UNSAFE(x) & (FLAG(x1) | FLAG(x2) | FLAG(x3)))
  */
-#define FLAG(x) (ASSERT_STATIC_EXPR_ZERO ((unsigned)(x) < 32) + (1U << (unsigned)(x)))
-#define FLAG_UNSAFE(x) ((unsigned)(x) < 32 ? (1U << (unsigned)(x)) : 0)
+#define FLAG(x) (ASSERT_STATIC_EXPR_ZERO ((unsigned)(x) < 32) + (((uint32_t) 1U) << (unsigned)(x)))
+#define FLAG_UNSAFE(x) ((unsigned)(x) < 32 ? (((uint32_t) 1U) << (unsigned)(x)) : 0)
 #define FLAG_RANGE(x,y) (ASSERT_STATIC_EXPR_ZERO ((x) < (y)) + FLAG(y+1) - FLAG(x))
-#define FLAG64(x) (ASSERT_STATIC_EXPR_ZERO ((unsigned)(x) < 64) + (1ULL << (unsigned)(x)))
-#define FLAG64_UNSAFE(x) ((unsigned)(x) < 64 ? (1ULL << (unsigned)(x)) : 0)
+#define FLAG64(x) (ASSERT_STATIC_EXPR_ZERO ((unsigned)(x) < 64) + (((uint64_t) 1ULL) << (unsigned)(x)))
+#define FLAG64_UNSAFE(x) ((unsigned)(x) < 64 ? (((uint64_t) 1ULL) << (unsigned)(x)) : 0)
 
 
 /* Size signifying variable-sized array */