Fixnum as a Symbol was an old feature until 1.6

spec/ruby/core/module/attr_accessor_spec.rb

@@ -36,7 +36,7 @@ describe "Module#attr_accessor" do
     -> { true.spec_attr_accessor = "a" }.should raise_error(RuntimeError)
   end
 
-  it "converts non string/symbol/fixnum names to strings using to_str" do
+  it "converts non string/symbol names to strings using to_str" do
     (o = mock('test')).should_receive(:to_str).any_number_of_times.and_return("test")
     c = Class.new do
       attr_accessor o

spec/ruby/core/module/attr_reader_spec.rb

@@ -32,7 +32,7 @@ describe "Module#attr_reader" do
     -> { true.instance_variable_set("@spec_attr_reader", "a") }.should raise_error(RuntimeError)
   end
 
-  it "converts non string/symbol/fixnum names to strings using to_str" do
+  it "converts non string/symbol names to strings using to_str" do
     (o = mock('test')).should_receive(:to_str).any_number_of_times.and_return("test")
     c = Class.new do
       attr_reader o

spec/ruby/core/module/attr_spec.rb

@@ -124,7 +124,7 @@ describe "Module#attr" do
     -> { c.new.bar }.should raise_error(NoMethodError)
   end
 
-  it "converts non string/symbol/fixnum names to strings using to_str" do
+  it "converts non string/symbol names to strings using to_str" do
     (o = mock('test')).should_receive(:to_str).any_number_of_times.and_return("test")
     Class.new { attr o }.new.respond_to?("test").should == true
   end

spec/ruby/core/module/attr_writer_spec.rb

@@ -32,7 +32,7 @@ describe "Module#attr_writer" do
     -> { true.spec_attr_writer = "a" }.should raise_error(RuntimeError)
   end
 
-  it "converts non string/symbol/fixnum names to strings using to_str" do
+  it "converts non string/symbol names to strings using to_str" do
     (o = mock('test')).should_receive(:to_str).any_number_of_times.and_return("test")
     c = Class.new do
       attr_writer o

spec/ruby/core/module/class_variable_defined_spec.rb

@@ -51,7 +51,7 @@ describe "Module#class_variable_defined?" do
     }.should raise_error(NameError)
   end
 
-  it "converts a non string/symbol/fixnum name to string using to_str" do
+  it "converts a non string/symbol name to string using to_str" do
     c = Class.new { class_variable_set :@@class_var, "test" }
     (o = mock('@@class_var')).should_receive(:to_str).and_return("@@class_var")
     c.class_variable_defined?(o).should == true

spec/ruby/core/module/class_variable_get_spec.rb

@@ -60,7 +60,7 @@ describe "Module#class_variable_get" do
     -> { c.send(:class_variable_get, "@invalid_name") }.should raise_error(NameError)
   end
 
-  it "converts a non string/symbol/fixnum name to string using to_str" do
+  it "converts a non string/symbol name to string using to_str" do
     c = Class.new { class_variable_set :@@class_var, "test" }
     (o = mock('@@class_var')).should_receive(:to_str).and_return("@@class_var")
     c.send(:class_variable_get, o).should == "test"

spec/ruby/core/module/class_variable_set_spec.rb

@@ -45,7 +45,7 @@ describe "Module#class_variable_set" do
     }.should raise_error(NameError)
   end
 
-  it "converts a non string/symbol/fixnum name to string using to_str" do
+  it "converts a non string/symbol name to string using to_str" do
     (o = mock('@@class_var')).should_receive(:to_str).and_return("@@class_var")
     c = Class.new
     c.send(:class_variable_set, o, "test")

spec/ruby/core/module/method_defined_spec.rb

@@ -30,7 +30,7 @@ describe "Module#method_defined?" do
     m.method_defined?(:module_specs_public_method_on_kernel).should be_false
   end
 
-  it "raises a TypeError when the given object is not a string/symbol/fixnum" do
+  it "raises a TypeError when the given object is not a string/symbol" do
     c = Class.new
     o = mock('123')