* complax.c: [DOC] Document number conversion of nil by @skade [fix r…

…ubyGH-570] [ci skip]

* object.c, rational.c: ditto.

git-svn-id: svn+ssh:https://ci.ruby-lang.org/ruby/trunk@45375 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

complex.c

@@ -431,6 +431,8 @@ f_complex_new2(VALUE klass, VALUE x, VALUE y)
  *
  * Complex(1, 2) #=> (1+2i)
  * Complex('1+2i') #=> (1+2i)
+ * Complex(nil) #=> TypeError
+ * Complex(1, nil) #=> TypeError
  *
  * Syntax of string form:
  *

object.c

@@ -2746,13 +2746,15 @@ rb_Integer(VALUE val)
  * In any case, strings should be strictly conformed to numeric
  * representation. This behavior is different from that of
  * <code>String#to_i</code>. Non string values will be converted using
- * <code>to_int</code>, and <code>to_i</code>.
+ * <code>to_int</code>, and <code>to_i</code>. Passing <code>nil</code>
+ * raises a TypeError.
  *
  * Integer(123.999) #=> 123
  * Integer("0x1a") #=> 26
  * Integer(Time.new) #=> 1204973019
  * Integer("0930", 10) #=> 930
  * Integer("111", 2) #=> 7
+ * Integer(nil) #=> TypeError
  */
 
 static VALUE

rational.c

@@ -584,6 +584,8 @@ f_rational_new_no_reduce2(VALUE klass, VALUE x, VALUE y)
  *
  * Rational(1, 2) #=> (1/2)
  * Rational('1/2') #=> (1/2)
+ * Rational(nil) #=> TypeError
+ * Rational(1, nil) #=> TypeError
  *
  * Syntax of string form:
  *