@@ -258,10 +258,19 @@
 		return (id)[[OFNumber of_alloc]
 		    initWithUnsignedLongLong: (unsigned long long)uIntMax];
 
 	return (id)[[OFNumber of_alloc] initWithUIntMax: uIntMax];
 }
+
+#ifdef __clang__
+/*
+ * This warning should probably not exist at all, as it prevents checking
+ * whether one type fits into another in a portable way.
+ */
+# pragma clang diagnostic push
+# pragma clang diagnostic ignored "-Wtautological-constant-out-of-range-compare"
+#endif
 
 - (instancetype)initWithPtrDiff: (ptrdiff_t)ptrDiff
 {
 	if (ptrDiff >= LLONG_MIN && ptrDiff <= LLONG_MAX)
 		return (id)[[OFNumber of_alloc]
@@ -287,10 +296,14 @@
 		return (id)[[OFNumber of_alloc]
 		    initWithUnsignedLongLong: (unsigned long long)uIntPtr];
 
 	return (id)[[OFNumber of_alloc] initWithUIntPtr: uIntPtr];
 }
+
+#ifdef __clang__
+# pragma clang diagnostic pop
+#endif
 
 - (instancetype)initWithFloat: (float)float_
 {
 	if (float_ == (uintmax_t)float_)
 		return (id)[[OFNumber of_alloc]