Remove obsolete Fixnum and Bignum

Merged: https://github.com/ruby/ruby/pull/3927

bignum.c

@@ -7169,10 +7169,6 @@ rb_int_powm(int const argc, VALUE * const argv, VALUE const num)
 void
 Init_Bignum(void)
 {
-    /* An obsolete class, use Integer */
-    rb_define_const(rb_cObject, "Bignum", rb_cInteger);
-    rb_deprecate_constant(rb_cObject, "Bignum");
-
     rb_define_method(rb_cInteger, "coerce", rb_int_coerce, 1);
 
 #ifdef USE_GMP

numeric.c

@@ -6290,10 +6290,6 @@ Init_Numeric(void)
         rb_gc_register_mark_object(rb_fix_to_s_static[i]);
     }
 
-    /* An obsolete class, use Integer */
-    rb_define_const(rb_cObject, "Fixnum", rb_cInteger);
-    rb_deprecate_constant(rb_cObject, "Fixnum");
-
     rb_cFloat  = rb_define_class("Float", rb_cNumeric);
 
     rb_undef_alloc_func(rb_cFloat);

sample/trick2015/kinaba/entry.rb

@@ -54,8 +54,8 @@ while 0x00012345 >= $counter
   srand +big && $counter >> 0b1
 
   Enumerable
-  Fixnum
-  Bignum
+  String
+  Struct
   Math
   Complex
   Comparable

spec/ruby/core/integer/constants_spec.rb

@@ -1,25 +1,27 @@
 require_relative '../../spec_helper'
 
-describe "Fixnum" do
-  it "is unified into Integer" do
-    suppress_warning do
-      Fixnum.should equal(Integer)
+ruby_version_is ""..."3.1" do
+  describe "Fixnum" do
+    it "is unified into Integer" do
+      suppress_warning do
+        Fixnum.should equal(Integer)
+      end
+    end
+
+    it "is deprecated" do
+      -> { Fixnum }.should complain(/constant ::Fixnum is deprecated/)
     end
   end
 
-  it "is deprecated" do
-    -> { Fixnum }.should complain(/constant ::Fixnum is deprecated/)
-  end
-end
+  describe "Bignum" do
+    it "is unified into Integer" do
+      suppress_warning do
+        Bignum.should equal(Integer)
+      end
+    end
 
-describe "Bignum" do
-  it "is unified into Integer" do
-    suppress_warning do
-      Bignum.should equal(Integer)
+    it "is deprecated" do
+      -> { Bignum }.should complain(/constant ::Bignum is deprecated/)
     end
   end
-
-  it "is deprecated" do
-    -> { Bignum }.should complain(/constant ::Bignum is deprecated/)
-  end
 end