Update to ruby/spec@902ab83

41 files changed, 377 insertions, 101 deletions

diff --git a/spec/ruby/core/dir/fixtures/common.rb b/spec/ruby/core/dir/fixtures/common.rb
index c32b056819..637fe93e2f 100644
--- a/spec/ruby/core/dir/fixtures/common.rb
+++ b/spec/ruby/core/dir/fixtures/common.rb
@@ -94,6 +94,7 @@ module DirSpecs
           special/こんにちは.txt
           special/\a
         ]
+        @mock_dir_files << "special/_\u{1f60e}.erb"
       end
     end
 
diff --git a/spec/ruby/core/dir/read_spec.rb b/spec/ruby/core/dir/read_spec.rb
index 59de2e81cf..2953aad72f 100644
--- a/spec/ruby/core/dir/read_spec.rb
+++ b/spec/ruby/core/dir/read_spec.rb
@@ -39,5 +39,38 @@ describe "Dir#read" do
     entries.sort.should == DirSpecs.expected_paths
   end
 
+  platform_is_not :windows do
+    it "returns all directory entries even when encoding conversion will fail" do
+      dir = Dir.open(File.join(DirSpecs.mock_dir, 'special'))
+      utf8_entries = []
+      begin
+        while entry = dir.read
+          utf8_entries << entry
+        end
+      ensure
+        dir.close
+      end
+      old_internal_encoding = Encoding::default_internal
+      old_external_encoding = Encoding::default_external
+      Encoding.default_internal = Encoding::UTF_8
+      Encoding.default_external = Encoding::SHIFT_JIS
+      dir = Dir.open(File.join(DirSpecs.mock_dir, 'special'))
+      shift_jis_entries = []
+      begin
+        -> {
+          while entry = dir.read
+            shift_jis_entries << entry
+          end
+        }.should_not raise_error
+      ensure
+        dir.close
+        Encoding.default_internal = old_internal_encoding
+        Encoding.default_external = old_external_encoding
+      end
+      shift_jis_entries.size.should == utf8_entries.size
+      shift_jis_entries.filter { |f| f.encoding == Encoding::SHIFT_JIS }.size.should == 1
+    end
+  end
+
   it_behaves_like :dir_closed, :read
 end
diff --git a/spec/ruby/core/enumerable/all_spec.rb b/spec/ruby/core/enumerable/all_spec.rb
index b782f94a3e..0ded1e8eba 100644
--- a/spec/ruby/core/enumerable/all_spec.rb
+++ b/spec/ruby/core/enumerable/all_spec.rb
@@ -131,7 +131,6 @@ describe "Enumerable#all?" do
       pattern.yielded.should == [[0], [1], [2], [-1]]
     end
 
-    # may raise an exception in future versions
     it "always returns true on empty enumeration" do
       @empty.all?(Integer).should == true
       [].all?(Integer).should == true
diff --git a/spec/ruby/core/enumerable/any_spec.rb b/spec/ruby/core/enumerable/any_spec.rb
index 636b1fa450..355cd0c290 100644
--- a/spec/ruby/core/enumerable/any_spec.rb
+++ b/spec/ruby/core/enumerable/any_spec.rb
@@ -145,7 +145,6 @@ describe "Enumerable#any?" do
       pattern.yielded.should == [[0], [1], [2]]
     end
 
-    # may raise an exception in future versions
     it "always returns false on empty enumeration" do
       @empty.any?(Integer).should == false
       [].any?(Integer).should == false
diff --git a/spec/ruby/core/enumerable/none_spec.rb b/spec/ruby/core/enumerable/none_spec.rb
index b898d00063..99bb7f7a4e 100644
--- a/spec/ruby/core/enumerable/none_spec.rb
+++ b/spec/ruby/core/enumerable/none_spec.rb
@@ -100,7 +100,6 @@ describe "Enumerable#none?" do
       pattern.yielded.should == [[0], [1], [2], [-1]]
     end
 
-    # may raise an exception in future versions
     it "always returns true on empty enumeration" do
       @empty.none?(Integer).should == true
       [].none?(Integer).should == true
diff --git a/spec/ruby/core/enumerable/one_spec.rb b/spec/ruby/core/enumerable/one_spec.rb
index d54dd4a527..47bfd65a0f 100644
--- a/spec/ruby/core/enumerable/one_spec.rb
+++ b/spec/ruby/core/enumerable/one_spec.rb
@@ -91,7 +91,6 @@ describe "Enumerable#one?" do
       pattern.yielded.should == [[0], [1], [2], [-1]]
     end
 
-    # may raise an exception in future versions
     it "always returns false on empty enumeration" do
       @empty.one?(Integer).should == false
       [].one?(Integer).should == false
diff --git a/spec/ruby/core/float/coerce_spec.rb b/spec/ruby/core/float/coerce_spec.rb
index ea108f3303..baa831dcf6 100644
--- a/spec/ruby/core/float/coerce_spec.rb
+++ b/spec/ruby/core/float/coerce_spec.rb
@@ -9,10 +9,10 @@ describe "Float#coerce" do
     1.0.coerce(3.14).should == [3.14, 1.0]
 
     a, b = -0.0.coerce(bignum_value)
-    a.should be_close(9223372036854775808.0, TOLERANCE)
+    a.should be_close(18446744073709551616.0, TOLERANCE)
     b.should be_close(-0.0, TOLERANCE)
     a, b = 1.0.coerce(bignum_value)
-    a.should be_close(9223372036854775808.0, TOLERANCE)
+    a.should be_close(18446744073709551616.0, TOLERANCE)
     b.should be_close(1.0, TOLERANCE)
   end
 end
diff --git a/spec/ruby/core/float/divmod_spec.rb b/spec/ruby/core/float/divmod_spec.rb
index ec55dd3681..523217ac1f 100644
--- a/spec/ruby/core/float/divmod_spec.rb
+++ b/spec/ruby/core/float/divmod_spec.rb
@@ -10,7 +10,7 @@ describe "Float#divmod" do
     values[1].should be_close(2.8284, TOLERANCE)
     values = -1.0.divmod(bignum_value)
     values[0].should eql(-1)
-    values[1].should be_close(9223372036854775808.000, TOLERANCE)
+    values[1].should be_close(18446744073709551616.0, TOLERANCE)
     values = -1.0.divmod(1)
     values[0].should eql(-1)
     values[1].should eql(0.0)
diff --git a/spec/ruby/core/float/minus_spec.rb b/spec/ruby/core/float/minus_spec.rb
index 5626cbdac2..a4281a397b 100644
--- a/spec/ruby/core/float/minus_spec.rb
+++ b/spec/ruby/core/float/minus_spec.rb
@@ -6,7 +6,7 @@ describe "Float#-" do
 
   it "returns self minus other" do
     (9_237_212.5280 - 5_280).should be_close(9231932.528, TOLERANCE)
-    (2_560_496.1691 - bignum_value).should be_close(-9223372036852215808.000, TOLERANCE)
+    (2_560_496.1691 - bignum_value).should be_close(-18446744073706991616.0, TOLERANCE)
     (5.5 - 5.5).should be_close(0.0,TOLERANCE)
   end
 end
diff --git a/spec/ruby/core/float/multiply_spec.rb b/spec/ruby/core/float/multiply_spec.rb
index eca0b52c4f..2adb8796cd 100644
--- a/spec/ruby/core/float/multiply_spec.rb
+++ b/spec/ruby/core/float/multiply_spec.rb
@@ -7,7 +7,7 @@ describe "Float#*" do
   it "returns self multiplied by other" do
     (4923.98221 * 2).should be_close(9847.96442, TOLERANCE)
     (6712.5 * 0.25).should be_close(1678.125, TOLERANCE)
-    (256.4096 * bignum_value).should be_close(2364961134621118431232.000, TOLERANCE)
+    (256.4096 * bignum_value).should be_close(4729922269242236862464.0, TOLERANCE)
   end
 
   it "raises a TypeError when given a non-Numeric" do
diff --git a/spec/ruby/core/float/plus_spec.rb b/spec/ruby/core/float/plus_spec.rb
index 06b136a06b..e3e19d7f39 100644
--- a/spec/ruby/core/float/plus_spec.rb
+++ b/spec/ruby/core/float/plus_spec.rb
@@ -6,7 +6,7 @@ describe "Float#+" do
 
   it "returns self plus other" do
     (491.213 + 2).should be_close(493.213, TOLERANCE)
-    (9.99 + bignum_value).should be_close(9223372036854775808.000, TOLERANCE)
+    (9.99 + bignum_value).should be_close(18446744073709551616.0, TOLERANCE)
     (1001.99 + 5.219).should be_close(1007.209, TOLERANCE)
   end
 end
diff --git a/spec/ruby/core/hash/transform_keys_spec.rb b/spec/ruby/core/hash/transform_keys_spec.rb
index 1e82ff6547..361089ca97 100644
--- a/spec/ruby/core/hash/transform_keys_spec.rb
+++ b/spec/ruby/core/hash/transform_keys_spec.rb
@@ -73,7 +73,6 @@ describe "Hash#transform_keys!" do
     @hash.should == { 'a' => 1, 'b' => 2, 'c' => 3, 'd' => 4 }
   end
 
-  # https://bugs.ruby-lang.org/issues/14380
   it "prevents conflicts between new keys and old ones" do
     @hash.transform_keys!(&:succ)
     @hash.should == { b: 1, c: 2, d: 3, e: 4 }
diff --git a/spec/ruby/core/integer/bit_and_spec.rb b/spec/ruby/core/integer/bit_and_spec.rb
index 15a8026855..8de5a14aaa 100644
--- a/spec/ruby/core/integer/bit_and_spec.rb
+++ b/spec/ruby/core/integer/bit_and_spec.rb
@@ -55,24 +55,24 @@ describe "Integer#&" do
       @bignum = bignum_value(5)
       (@bignum & 3).should == 1
       (@bignum & 52).should == 4
-      (@bignum & bignum_value(9921)).should == 9223372036854775809
+      (@bignum & bignum_value(9921)).should == 18446744073709551617
 
       ((2*bignum_value) & 1).should == 0
-      ((2*bignum_value) & (2*bignum_value)).should == 18446744073709551616
+      ((2*bignum_value) & (2*bignum_value)).should == 36893488147419103232
     end
 
     it "returns self bitwise AND other when one operand is negative" do
       ((2*bignum_value) & -1).should == (2*bignum_value)
       ((4*bignum_value) & -1).should == (4*bignum_value)
-      (@bignum & -0xffffffffffffff5).should == 9223372036854775809
+      (@bignum & -0xffffffffffffff5).should == 18446744073709551617
       (@bignum & -@bignum).should == 1
-      (@bignum & -0x8000000000000000).should == 9223372036854775808
+      (@bignum & -0x8000000000000000).should == 18446744073709551616
     end
 
     it "returns self bitwise AND other when both operands are negative" do
-      (-@bignum & -0x4000000000000005).should == -13835058055282163717
-      (-@bignum & -@bignum).should == -9223372036854775813
-      (-@bignum & -0x4000000000000000).should == -13835058055282163712
+      (-@bignum & -0x4000000000000005).should == -23058430092136939525
+      (-@bignum & -@bignum).should == -18446744073709551621
+      (-@bignum & -0x4000000000000000).should == -23058430092136939520
     end
 
     it "returns self bitwise AND other when both are negative and a multiple in bitsize of Fixnum::MIN" do
diff --git a/spec/ruby/core/integer/bit_or_spec.rb b/spec/ruby/core/integer/bit_or_spec.rb
index e486eeec10..6f4279c170 100644
--- a/spec/ruby/core/integer/bit_or_spec.rb
+++ b/spec/ruby/core/integer/bit_or_spec.rb
@@ -7,13 +7,34 @@ describe "Integer#|" do
       (5 | 4).should == 5
       (5 | 6).should == 7
       (248 | 4096).should == 4344
-      (0xffff | bignum_value + 0xf0f0).should == 0x8000_0000_0000_ffff
+      (0xffff | bignum_value + 0xf0f0).should == 0x1_0000_0000_0000_ffff
+    end
+
+    it "returns self bitwise OR other when one operand is negative" do
+      ((1 << 33) | -1).should == -1
+      (-1 | (1 << 33)).should == -1
+
+      ((-(1<<33)-1) | 5).should == -8589934593
+      (5 | (-(1<<33)-1)).should == -8589934593
+    end
+
+    it "returns self bitwise OR other when both operands are negative" do
+      (-5 | -1).should == -1
+      (-3 | -4).should == -3
+      (-12 | -13).should == -9
+      (-13 | -12).should == -9
     end
 
     it "returns self bitwise OR a bignum" do
       (-1 | 2**64).should == -1
     end
 
+    it "coerces the rhs and calls #coerce" do
+      obj = mock("fixnum bit and")
+      obj.should_receive(:coerce).with(6).and_return([3, 6])
+      (6 & obj).should == 2
+    end
+
     it "raises a TypeError when passed a Float" do
       -> { (3 | 3.4) }.should raise_error(TypeError)
     end
@@ -32,20 +53,20 @@ describe "Integer#|" do
     end
 
     it "returns self bitwise OR other" do
-      (@bignum | 2).should == 9223372036854775819
-      (@bignum | 9).should == 9223372036854775819
-      (@bignum | bignum_value).should == 9223372036854775819
+      (@bignum | 2).should == 18446744073709551627
+      (@bignum | 9).should == 18446744073709551627
+      (@bignum | bignum_value).should == 18446744073709551627
     end
 
     it "returns self bitwise OR other when one operand is negative" do
-      (@bignum | -0x40000000000000000).should == -64563604257983430645
+      (@bignum | -0x40000000000000000).should == -55340232221128654837
       (@bignum | -@bignum).should == -1
       (@bignum | -0x8000000000000000).should == -9223372036854775797
     end
 
     it "returns self bitwise OR other when both operands are negative" do
       (-@bignum | -0x4000000000000005).should == -1
-      (-@bignum | -@bignum).should == -9223372036854775819
+      (-@bignum | -@bignum).should == -18446744073709551627
       (-@bignum | -0x4000000000000000).should == -11
     end
 
diff --git a/spec/ruby/core/integer/bit_xor_spec.rb b/spec/ruby/core/integer/bit_xor_spec.rb
index ac8826a52f..f1150a20d5 100644
--- a/spec/ruby/core/integer/bit_xor_spec.rb
+++ b/spec/ruby/core/integer/bit_xor_spec.rb
@@ -5,13 +5,34 @@ describe "Integer#^" do
     it "returns self bitwise EXCLUSIVE OR other" do
       (3 ^ 5).should == 6
       (-2 ^ -255).should == 255
-      (5 ^ bignum_value + 0xffff_ffff).should == 0x8000_0000_ffff_fffa
+      (5 ^ bignum_value + 0xffff_ffff).should == 0x1_0000_0000_ffff_fffa
+    end
+
+    it "returns self bitwise XOR other when one operand is negative" do
+      ((1 << 33) ^ -1).should == -8589934593
+      (-1 ^ (1 << 33)).should == -8589934593
+
+      ((-(1<<33)-1) ^ 5).should == -8589934598
+      (5 ^ (-(1<<33)-1)).should == -8589934598
+    end
+
+    it "returns self bitwise XOR other when both operands are negative" do
+      (-5 ^ -1).should == 4
+      (-3 ^ -4).should == 1
+      (-12 ^ -13).should == 7
+      (-13 ^ -12).should == 7
     end
 
     it "returns self bitwise EXCLUSIVE OR a bignum" do
       (-1 ^ 2**64).should == -18446744073709551617
     end
 
+    it "coerces the rhs and calls #coerce" do
+      obj = mock("fixnum bit and")
+      obj.should_receive(:coerce).with(6).and_return([3, 6])
+      (6 ^ obj).should == 5
+    end
+
     it "raises a TypeError when passed a Float" do
       -> { (3 ^ 3.4) }.should raise_error(TypeError)
     end
@@ -30,21 +51,21 @@ describe "Integer#^" do
     end
 
     it "returns self bitwise EXCLUSIVE OR other" do
-      (@bignum ^ 2).should == 9223372036854775824
+      (@bignum ^ 2).should == 18446744073709551632
       (@bignum ^ @bignum).should == 0
-      (@bignum ^ 14).should == 9223372036854775836
+      (@bignum ^ 14).should == 18446744073709551644
     end
 
     it "returns self bitwise EXCLUSIVE OR other when one operand is negative" do
-      (@bignum ^ -0x40000000000000000).should == -64563604257983430638
+      (@bignum ^ -0x40000000000000000).should == -55340232221128654830
       (@bignum ^ -@bignum).should == -4
-      (@bignum ^ -0x8000000000000000).should == -18446744073709551598
+      (@bignum ^ -0x8000000000000000).should == -27670116110564327406
     end
 
     it "returns self bitwise EXCLUSIVE OR other when both operands are negative" do
-      (-@bignum ^ -0x40000000000000000).should == 64563604257983430638
+      (-@bignum ^ -0x40000000000000000).should == 55340232221128654830
       (-@bignum ^ -@bignum).should == 0
-      (-@bignum ^ -0x4000000000000000).should == 13835058055282163694
+      (-@bignum ^ -0x4000000000000000).should == 23058430092136939502
     end
 
     it "returns self bitwise EXCLUSIVE OR other when all bits are 1 and other value is negative" do
diff --git a/spec/ruby/core/integer/chr_spec.rb b/spec/ruby/core/integer/chr_spec.rb
index 9f105e4241..a919d29f12 100644
--- a/spec/ruby/core/integer/chr_spec.rb
+++ b/spec/ruby/core/integer/chr_spec.rb
@@ -11,7 +11,11 @@ describe "Integer#chr without argument" do
 
   it "raises a RangeError is self is less than 0" do
     -> { -1.chr }.should raise_error(RangeError)
-    -> { -bignum_value.chr }.should raise_error(RangeError)
+    -> { (-bignum_value).chr }.should raise_error(RangeError)
+  end
+
+  it "raises a RangeError if self is too large" do
+    -> { 2206368128.chr(Encoding::UTF_8) }.should raise_error(RangeError)
   end
 
   describe "when Encoding.default_internal is nil" do
@@ -162,7 +166,7 @@ describe "Integer#chr with an encoding argument" do
   # http://redmine.ruby-lang.org/issues/4869
   it "raises a RangeError is self is less than 0" do
     -> { -1.chr(Encoding::UTF_8) }.should raise_error(RangeError)
-    -> { -bignum_value.chr(Encoding::EUC_JP) }.should raise_error(RangeError)
+    -> { (-bignum_value).chr(Encoding::EUC_JP) }.should raise_error(RangeError)
   end
 
   it "raises a RangeError if self is too large" do
diff --git a/spec/ruby/core/integer/complement_spec.rb b/spec/ruby/core/integer/complement_spec.rb
index eafa5c263f..baf5e6c457 100644
--- a/spec/ruby/core/integer/complement_spec.rb
+++ b/spec/ruby/core/integer/complement_spec.rb
@@ -12,9 +12,9 @@ describe "Integer#~" do
 
   context "bignum" do
     it "returns self with each bit flipped" do
-      (~bignum_value(48)).should == -9223372036854775857
-      (~(-bignum_value(21))).should == 9223372036854775828
-      (~bignum_value(1)).should == -9223372036854775810
+      (~bignum_value(48)).should == -18446744073709551665
+      (~(-bignum_value(21))).should == 18446744073709551636
+      (~bignum_value(1)).should == -18446744073709551618
     end
   end
 end
diff --git a/spec/ruby/core/integer/div_spec.rb b/spec/ruby/core/integer/div_spec.rb
index bc1c4363d4..344e095179 100644
--- a/spec/ruby/core/integer/div_spec.rb
+++ b/spec/ruby/core/integer/div_spec.rb
@@ -70,8 +70,8 @@ describe "Integer#div" do
     end
 
     it "returns self divided by other" do
-      @bignum.div(4).should == 2305843009213693974
-      @bignum.div(Rational(4, 1)).should == 2305843009213693974
+      @bignum.div(4).should == 4611686018427387926
+      @bignum.div(Rational(4, 1)).should == 4611686018427387926
       @bignum.div(bignum_value(2)).should == 1
 
       (-(10**50)).div(-(10**40 + 1)).should == 9999999999
@@ -124,11 +124,11 @@ describe "Integer#div" do
     end
 
     it "returns a result of integer division of self by a float argument" do
-      @bignum.div(4294967295.5).should eql(2147483648)
+      @bignum.div(4294967295.5).should eql(4294967296)
       not_supported_on :opal do
-        @bignum.div(4294967295.0).should eql(2147483648)
+        @bignum.div(4294967295.0).should eql(4294967297)
         @bignum.div(bignum_value(88).to_f).should eql(1)
-        @bignum.div(-bignum_value(88).to_f).should eql(-1)
+        @bignum.div((-bignum_value(88)).to_f).should eql(-1)
       end
     end
 
diff --git a/spec/ruby/core/integer/divide_spec.rb b/spec/ruby/core/integer/divide_spec.rb
index 5ac2dc538d..a878c4668c 100644
--- a/spec/ruby/core/integer/divide_spec.rb
+++ b/spec/ruby/core/integer/divide_spec.rb
@@ -47,7 +47,7 @@ describe "Integer#/" do
     end
 
     it "returns self divided by other" do
-      (@bignum / 4).should == 2305843009213693974
+      (@bignum / 4).should == 4611686018427387926
 
       (@bignum / bignum_value(2)).should == 1
 
@@ -60,15 +60,15 @@ describe "Integer#/" do
 
     it "returns self divided by Float" do
       not_supported_on :opal do
-        (bignum_value(88) / 4294967295.0).should be_close(2147483648.5, TOLERANCE)
+        (bignum_value(88) / 4294967295.0).should be_close(4294967297.0, TOLERANCE)
       end
-      (bignum_value(88) / 4294967295.5).should be_close(2147483648.25, TOLERANCE)
+      (bignum_value(88) / 4294967295.5).should be_close(4294967296.5, TOLERANCE)
     end
 
     it "returns result the same class as the argument" do
-      (@bignum / 4).should == 2305843009213693974
-      (@bignum / 4.0).should be_close(2305843009213693974, TOLERANCE)
-      (@bignum / Rational(4, 1)).should == Rational(2305843009213693974, 1)
+      (@bignum / 4).should == 4611686018427387926
+      (@bignum / 4.0).should be_close(4611686018427387926, TOLERANCE)
+      (@bignum / Rational(4, 1)).should == Rational(4611686018427387926, 1)
     end
 
     it "does NOT raise ZeroDivisionError if other is zero and is a Float" do
diff --git a/spec/ruby/core/integer/divmod_spec.rb b/spec/ruby/core/integer/divmod_spec.rb
index d88925caad..7a489e9344 100644
--- a/spec/ruby/core/integer/divmod_spec.rb
+++ b/spec/ruby/core/integer/divmod_spec.rb
@@ -46,16 +46,16 @@ describe "Integer#divmod" do
     # assert(0 < b ? (0 <= r && r < b) : (b < r && r <= 0))
     # So, r is always between 0 and b.
     it "returns an Array containing quotient and modulus obtained from dividing self by the given argument" do
-      @bignum.divmod(4).should == [2305843009213693965, 3]
-      @bignum.divmod(13).should == [709490156681136604, 11]
+      @bignum.divmod(4).should == [4611686018427387917, 3]
+      @bignum.divmod(13).should == [1418980313362273205, 6]
 
-      @bignum.divmod(4.5).should == [2049638230412172288, 3.5]
+      @bignum.divmod(4.5).should == [4099276460824344576, 2.5]
 
       not_supported_on :opal do
-        @bignum.divmod(4.0).should == [2305843009213693952, 0.0]
-        @bignum.divmod(13.0).should == [709490156681136640, 8.0]
+        @bignum.divmod(4.0).should == [4611686018427387904, 0.0]
+        @bignum.divmod(13.0).should == [1418980313362273280, 3.0]
 
-        @bignum.divmod(2.0).should == [4611686018427387904, 0.0]
+        @bignum.divmod(2.0).should == [9223372036854775808, 0.0]
       end
 
       @bignum.divmod(bignum_value).should == [1, 55]
diff --git a/spec/ruby/core/integer/left_shift_spec.rb b/spec/ruby/core/integer/left_shift_spec.rb
index 2b8c26223b..135af90421 100644
--- a/spec/ruby/core/integer/left_shift_spec.rb
+++ b/spec/ruby/core/integer/left_shift_spec.rb
@@ -96,7 +96,7 @@ describe "Integer#<< (with n << m)" do
 
   context "bignum" do
     before :each do
-      @bignum = bignum_value * 16
+      @bignum = bignum_value * 8 # 2 ** 67
     end
 
     it "returns n shifted left m bits when n > 0, m > 0" do
@@ -127,10 +127,6 @@ describe "Integer#<< (with n << m)" do
       (@bignum << -68).should == 0
     end
 
-    it "returns 0 when m < 0 and m is a Bignum" do
-      (@bignum << -bignum_value).should == 0
-    end
-
     it "returns a Fixnum == fixnum_max when (fixnum_max * 2) << -1 and n > 0" do
       result = (fixnum_max * 2) << -1
       result.should be_an_instance_of(Integer)
@@ -165,4 +161,51 @@ describe "Integer#<< (with n << m)" do
       -> { @bignum << "4" }.should raise_error(TypeError)
     end
   end
+
+  context "when m is a bignum or larger than int" do
+    it "returns -1 when m < 0 and n < 0" do
+      (-1 << -bignum_value).should == -1
+      (-1 << -(2**40)).should == -1
+
+      (-bignum_value << -bignum_value).should == -1
+      (-bignum_value << -(2**40)).should == -1
+    end
+
+    it "returns 0 when m < 0 and n >= 0" do
+      (0 << -bignum_value).should == 0
+      (1 << -bignum_value).should == 0
+      (bignum_value << -bignum_value).should == 0
+
+      (0 << -(2**40)).should == 0
+      (1 << -(2**40)).should == 0
+      (bignum_value << -(2**40)).should == 0
+    end
+
+    ruby_bug "#18517", ""..."3.2" do
+      it "returns 0 when m > 0 long and n == 0" do
+        (0 << (2**40)).should == 0
+      end
+    end
+
+    it "returns 0 when m > 0 bignum and n == 0" do
+      (0 << bignum_value).should == 0
+    end
+
+    ruby_bug "#18518", ""..."3.3" do
+      it "raises NoMemoryError when m > 0 and n != 0" do
+        coerce_long = mock("long")
+        coerce_long.stub!(:to_int).and_return(2**40)
+        coerce_bignum = mock("bignum")
+        coerce_bignum.stub!(:to_int).and_return(bignum_value)
+        exps = [2**40, bignum_value, coerce_long, coerce_bignum]
+
+        exps.each { |exp|
+          -> { (1 << exp) }.should raise_error(NoMemoryError)
+          -> { (-1 << exp) }.should raise_error(NoMemoryError)
+          -> { (bignum_value << exp) }.should raise_error(NoMemoryError)
+          -> { (-bignum_value << exp) }.should raise_error(NoMemoryError)
+        }
+      end
+    end
+  end
 end
diff --git a/spec/ruby/core/integer/minus_spec.rb b/spec/ruby/core/integer/minus_spec.rb
index ce50c8752f..aadf416a05 100644
--- a/spec/ruby/core/integer/minus_spec.rb
+++ b/spec/ruby/core/integer/minus_spec.rb
@@ -10,7 +10,7 @@ describe "Integer#-" do
       (9237212 - 5_280).should == 9231932
 
       (781 - 0.5).should == 780.5
-      (2_560_496 - bignum_value).should == -9223372036852215312
+      (2_560_496 - bignum_value).should == -18446744073706991120
     end
 
     it "raises a TypeError when given a non-Integer" do
@@ -29,8 +29,8 @@ describe "Integer#-" do
     end
 
     it "returns self minus the given Integer" do
-      (@bignum - 9).should == 9223372036854776113
-      (@bignum - 12.57).should be_close(9223372036854776109.43, TOLERANCE)
+      (@bignum - 9).should == 18446744073709551921
+      (@bignum - 12.57).should be_close(18446744073709551917.43, TOLERANCE)
       (@bignum - bignum_value(42)).should == 272
     end
 
diff --git a/spec/ruby/core/integer/multiply_spec.rb b/spec/ruby/core/integer/multiply_spec.rb
index d1e9c2640d..5037d27458 100644
--- a/spec/ruby/core/integer/multiply_spec.rb
+++ b/spec/ruby/core/integer/multiply_spec.rb
@@ -10,7 +10,7 @@ describe "Integer#*" do
       (1342177 * 800).should == 1073741600
       (65536 * 65536).should == 4294967296
 
-      (256 * bignum_value).should == 2361183241434822606848
+      (256 * bignum_value).should == 4722366482869645213696
       (6712 * 0.25).should == 1678.0
     end
 
@@ -32,8 +32,8 @@ describe "Integer#*" do
     it "returns self multiplied by the given Integer" do
       (@bignum * (1/bignum_value(0xffff).to_f)).should be_close(1.0, TOLERANCE)
       (@bignum * (1/bignum_value(0xffff).to_f)).should be_close(1.0, TOLERANCE)
-      (@bignum * 10).should == 92233720368547765800
-      (@bignum * (@bignum - 40)).should == 85070591730234629737795195287525433200
+      (@bignum * 10).should == 184467440737095523880
+      (@bignum * (@bignum - 40)).should == 340282366920938491207277694290934407024
     end
 
     it "raises a TypeError when given a non-Integer" do
diff --git a/spec/ruby/core/integer/plus_spec.rb b/spec/ruby/core/integer/plus_spec.rb
index 511a436872..d01a76ab58 100644
--- a/spec/ruby/core/integer/plus_spec.rb
+++ b/spec/ruby/core/integer/plus_spec.rb
@@ -9,7 +9,7 @@ describe "Integer#+" do
       (491 + 2).should == 493
       (90210 + 10).should == 90220
 
-      (9 + bignum_value).should == 9223372036854775817
+      (9 + bignum_value).should == 18446744073709551625
       (1001 + 5.219).should == 1006.219
     end
 
@@ -29,9 +29,9 @@ describe "Integer#+" do
     end
 
     it "returns self plus the given Integer" do
-      (@bignum + 4).should == 9223372036854775888
-      (@bignum + 4.2).should be_close(9223372036854775888.2, TOLERANCE)
-      (@bignum + bignum_value(3)).should == 18446744073709551695
+      (@bignum + 4).should == 18446744073709551696
+      (@bignum + 4.2).should be_close(18446744073709551696.2, TOLERANCE)
+      (@bignum + bignum_value(3)).should == 36893488147419103311
     end
 
     it "raises a TypeError when given a non-Integer" do
diff --git a/spec/ruby/core/integer/remainder_spec.rb b/spec/ruby/core/integer/remainder_spec.rb
index cd10dad6f2..96268b3af5 100644
--- a/spec/ruby/core/integer/remainder_spec.rb
+++ b/spec/ruby/core/integer/remainder_spec.rb
@@ -33,7 +33,7 @@ describe "Integer#remainder" do
     it "returns the remainder of dividing self by other" do
       a = bignum_value(79)
       a.remainder(2).should == 1
-      a.remainder(97.345).should be_close(46.5674996147722, TOLERANCE)
+      a.remainder(97.345).should be_close(93.1349992295444, TOLERANCE)
       a.remainder(bignum_value).should == 79
     end
 
diff --git a/spec/ruby/core/integer/right_shift_spec.rb b/spec/ruby/core/integer/right_shift_spec.rb
index c8e3f45f21..81405667b2 100644
--- a/spec/ruby/core/integer/right_shift_spec.rb
+++ b/spec/ruby/core/integer/right_shift_spec.rb
@@ -52,10 +52,6 @@ describe "Integer#>> (with n >> m)" do
       (-7 >> 64).should == -1
     end
 
-    it "returns 0 when m is a bignum" do
-      (3 >> bignum_value).should == 0
-    end
-
     it "returns a Bignum == fixnum_max * 2 when fixnum_max >> -1 and n > 0" do
       result = fixnum_max >> -1
       result.should be_an_instance_of(Integer)
@@ -96,7 +92,7 @@ describe "Integer#>> (with n >> m)" do
 
   context "bignum" do
     before :each do
-      @bignum = bignum_value * 16
+      @bignum = bignum_value * 8 # 2 ** 67
     end
 
     it "returns n shifted right m bits when n > 0, m > 0" do
@@ -153,10 +149,6 @@ describe "Integer#>> (with n >> m)" do
       (@bignum >> 68).should == 0
     end
 
-    it "returns 0 when m is a Bignum" do
-      (@bignum >> bignum_value).should == 0
-    end
-
     it "returns a Fixnum == fixnum_max when (fixnum_max * 2) >> 1 and n > 0" do
       result = (fixnum_max * 2) >> 1
       result.should be_an_instance_of(Integer)
@@ -191,4 +183,51 @@ describe "Integer#>> (with n >> m)" do
       -> { @bignum >> "4" }.should raise_error(TypeError)
     end
   end
+
+  context "when m is a bignum or larger than int" do
+    it "returns -1 when m > 0 and n < 0" do
+      (-1 >> bignum_value).should == -1
+      (-1 >> (2**40)).should == -1
+
+      (-bignum_value >> bignum_value).should == -1
+      (-bignum_value >> (2**40)).should == -1
+    end
+
+    it "returns 0 when m > 0 and n >= 0" do
+      (0 >> bignum_value).should == 0
+      (1 >> bignum_value).should == 0
+      (bignum_value >> bignum_value).should == 0
+
+      (0 >> (2**40)).should == 0
+      (1 >> (2**40)).should == 0
+      (bignum_value >> (2**40)).should == 0
+    end
+
+    ruby_bug "#18517", ""..."3.2" do
+      it "returns 0 when m < 0 long and n == 0" do
+        (0 >> -(2**40)).should == 0
+      end
+    end
+
+    it "returns 0 when m < 0 bignum and n == 0" do
+      (0 >> -bignum_value).should == 0
+    end
+
+    ruby_bug "#18518", ""..."3.3" do
+      it "raises NoMemoryError when m < 0 and n != 0" do
+        coerce_long = mock("long")
+        coerce_long.stub!(:to_int).and_return(-(2**40))
+        coerce_bignum = mock("bignum")
+        coerce_bignum.stub!(:to_int).and_return(-bignum_value)
+        exps = [-(2**40), -bignum_value, coerce_long, coerce_bignum]
+
+        exps.each { |exp|
+          -> { (1 >> exp) }.should raise_error(NoMemoryError)
+          -> { (-1 >> exp) }.should raise_error(NoMemoryError)
+          -> { (bignum_value >> exp) }.should raise_error(NoMemoryError)
+          -> { (-bignum_value >> exp) }.should raise_error(NoMemoryError)
+        }
+      end
+    end
+  end
 end
diff --git a/spec/ruby/core/integer/shared/abs.rb b/spec/ruby/core/integer/shared/abs.rb
index 946aa21864..43844c9065 100644
--- a/spec/ruby/core/integer/shared/abs.rb
+++ b/spec/ruby/core/integer/shared/abs.rb
@@ -11,8 +11,8 @@ describe :integer_abs, shared: true do
 
   context "bignum" do
     it "returns the absolute bignum value" do
-      bignum_value(39).send(@method).should == 9223372036854775847
-      (-bignum_value(18)).send(@method).should == 9223372036854775826
+      bignum_value(39).send(@method).should == 18446744073709551655
+      (-bignum_value(18)).send(@method).should == 18446744073709551634
     end
   end
 end
diff --git a/spec/ruby/core/integer/shared/exponent.rb b/spec/ruby/core/integer/shared/exponent.rb
index f949c514c8..15df518b7e 100644
--- a/spec/ruby/core/integer/shared/exponent.rb
+++ b/spec/ruby/core/integer/shared/exponent.rb
@@ -30,11 +30,13 @@ describe :integer_exponent, shared: true do
       (-2).send(@method, 30).should eql(1073741824)
       (-2).send(@method, 31).should eql(-2147483648)
       (-2).send(@method, 32).should eql(4294967296)
+      (-2).send(@method, 33).should eql(-8589934592)
 
       (-2).send(@method, 61).should eql(-2305843009213693952)
       (-2).send(@method, 62).should eql(4611686018427387904)
       (-2).send(@method, 63).should eql(-9223372036854775808)
       (-2).send(@method, 64).should eql(18446744073709551616)
+      (-2).send(@method, 65).should eql(-36893488147419103232)
     end
 
     it "can raise 1 to a bignum safely" do
@@ -96,8 +98,8 @@ describe :integer_exponent, shared: true do
     end
 
     it "returns self raised to other power" do
-      (@bignum.send(@method, 4)).should == 7237005577332262361485077344629993318496048279512298547155833600056910050625
-      (@bignum.send(@method, 1.2)).should be_close(57262152889751597425762.57804, TOLERANCE)
+      (@bignum.send(@method, 4)).should == 115792089237316196603666111261383895964500887398800252671052694326794607293761
+      (@bignum.send(@method, 1.3)).should be_close(11109528802438156839288832.0, TOLERANCE)
     end
 
     it "raises a TypeError when given a non-Integer" do
@@ -116,8 +118,9 @@ describe :integer_exponent, shared: true do
     end
 
     it "returns a complex number when negative and raised to a fractional power" do
-      ((-@bignum).send(@method, (1.0/3)))      .should be_close(Complex(1048576,1816186.907597341), TOLERANCE)
-      ((-@bignum).send(@method, Rational(1,3))).should be_close(Complex(1048576,1816186.907597341), TOLERANCE)
+      (-bignum_value).send(@method, (1.0/2)).should be_close(Complex(0.0, 4294967296.0), TOLERANCE)
+      (-@bignum).send(@method, (1.0/3))      .should be_close(Complex(1321122.9748145656, 2288252.1154253655), TOLERANCE)
+      (-@bignum).send(@method, Rational(1,3)).should be_close(Complex(1321122.9748145656, 2288252.1154253655), TOLERANCE)
     end
   end
 end
diff --git a/spec/ruby/core/integer/shared/modulo.rb b/spec/ruby/core/integer/shared/modulo.rb
index b06d81e17d..f678a10806 100644
--- a/spec/ruby/core/integer/shared/modulo.rb
+++ b/spec/ruby/core/integer/shared/modulo.rb
@@ -48,11 +48,11 @@ describe :integer_modulo, shared: true do
     end
 
     it "returns the modulus obtained from dividing self by the given argument" do
-      @bignum.send(@method, 5).should == 3
-      @bignum.send(@method, -5).should == -2
-      @bignum.send(@method, -100).should == -92
-      @bignum.send(@method, 2.22).should be_close(0.780180180180252, TOLERANCE)
-      @bignum.send(@method, bignum_value(10)).should == 9223372036854775808
+      @bignum.send(@method, 5).should == 1
+      @bignum.send(@method, -5).should == -4
+      @bignum.send(@method, -100).should == -84
+      @bignum.send(@method, 2.22).should be_close(1.5603603603605034, TOLERANCE)
+      @bignum.send(@method, bignum_value(10)).should == 18446744073709551616
     end
 
     it "raises a ZeroDivisionError when the given argument is 0" do
diff --git a/spec/ruby/core/integer/to_f_spec.rb b/spec/ruby/core/integer/to_f_spec.rb
index 06092eaa92..9f1df9ada9 100644
--- a/spec/ruby/core/integer/to_f_spec.rb
+++ b/spec/ruby/core/integer/to_f_spec.rb
@@ -11,9 +11,9 @@ describe "Integer#to_f" do
 
   context "bignum" do
     it "returns self converted to a Float" do
-      bignum_value(0x4000_0aa0_0bb0_0000).to_f.should eql(13_835_069_737_789_292_544.00)
-      bignum_value(0x8000_0000_0000_0ccc).to_f.should eql(18_446_744_073_709_555_712.00)
-      (-bignum_value(99)).to_f.should eql(-9_223_372_036_854_775_808.00)
+      bignum_value(0x4000_0aa0_0bb0_0000).to_f.should eql(23_058_441_774_644_068_352.0)
+      bignum_value(0x8000_0000_0000_0ccc).to_f.should eql(27_670_116_110_564_330_700.0)
+      (-bignum_value(99)).to_f.should eql(-18_446_744_073_709_551_715.0)
     end
 
     it "converts number close to Float::MAX without exceeding MAX or producing NaN" do
diff --git a/spec/ruby/core/integer/to_s_spec.rb b/spec/ruby/core/integer/to_s_spec.rb
index 7988bfde7a..ca08dad95c 100644
--- a/spec/ruby/core/integer/to_s_spec.rb
+++ b/spec/ruby/core/integer/to_s_spec.rb
@@ -68,9 +68,9 @@ describe "Integer#to_s" do
 
     describe "when given no base" do
       it "returns self converted to a String using base 10" do
-        bignum_value(9).to_s.should == "9223372036854775817"
-        bignum_value.to_s.should == "9223372036854775808"
-        (-bignum_value(675)).to_s.should == "-9223372036854776483"
+        bignum_value(9).to_s.should == "18446744073709551625"
+        bignum_value.to_s.should == "18446744073709551616"
+        (-bignum_value(675)).to_s.should == "-18446744073709552291"
       end
     end
 
diff --git a/spec/ruby/core/integer/uminus_spec.rb b/spec/ruby/core/integer/uminus_spec.rb
index b6b110dec4..7a9cfe89bf 100644
--- a/spec/ruby/core/integer/uminus_spec.rb
+++ b/spec/ruby/core/integer/uminus_spec.rb
@@ -20,11 +20,11 @@ describe "Integer#-@" do
 
   context "bignum" do
     it "returns self as a negative value" do
-      bignum_value.send(:-@).should == -9223372036854775808
-      (-bignum_value).send(:-@).should == 9223372036854775808
+      bignum_value.send(:-@).should == -18446744073709551616
+      (-bignum_value).send(:-@).should == 18446744073709551616
 
-      bignum_value(921).send(:-@).should == -9223372036854776729
-      (-bignum_value(921).send(:-@)).should == 9223372036854776729
+      bignum_value(921).send(:-@).should == -18446744073709552537
+      (-bignum_value(921).send(:-@)).should == 18446744073709552537
     end
   end
 end
diff --git a/spec/ruby/core/io/write_spec.rb b/spec/ruby/core/io/write_spec.rb
index 60e66e998f..f29fdf3a01 100644
--- a/spec/ruby/core/io/write_spec.rb
+++ b/spec/ruby/core/io/write_spec.rb
@@ -168,3 +168,27 @@ platform_is :windows do
     end
   end
 end
+
+ruby_version_is "3.0" do
+  describe "IO#write on STDOUT" do
+    # https://bugs.ruby-lang.org/issues/14413
+    platform_is_not :windows do
+      it "raises SignalException SIGPIPE if the stream is closed instead of Errno::EPIPE like other IOs" do
+        stderr_file = tmp("stderr")
+        begin
+          IO.popen([*ruby_exe, "-e", "loop { puts :ok }"], "r", err: stderr_file) do |io|
+            io.gets.should == "ok\n"
+            io.close
+          end
+          status = $?
+          status.should_not.success?
+          status.should.signaled?
+          Signal.signame(status.termsig).should == 'PIPE'
+          File.read(stderr_file).should.empty?
+        ensure
+          rm_r stderr_file
+        end
+      end
+    end
+  end
+end
diff --git a/spec/ruby/core/kernel/instance_variable_set_spec.rb b/spec/ruby/core/kernel/instance_variable_set_spec.rb
index 7fda30f72c..dbd257f7b9 100644
--- a/spec/ruby/core/kernel/instance_variable_set_spec.rb
+++ b/spec/ruby/core/kernel/instance_variable_set_spec.rb
@@ -89,5 +89,11 @@ describe "Kernel#instance_variable_set" do
     it "raises a FrozenError when passed replacement is different from stored object" do
       -> { @frozen.instance_variable_set(:@ivar, :replacement) }.should raise_error(FrozenError)
     end
+
+    it "accepts unicode instance variable names" do
+      o = Object.new
+      o.instance_variable_set(:@💙, 42)
+      o.instance_variable_get(:@💙).should == 42
+    end
   end
 end
diff --git a/spec/ruby/core/module/ruby2_keywords_spec.rb b/spec/ruby/core/module/ruby2_keywords_spec.rb
index 34c45cb1bc..996774891c 100644
--- a/spec/ruby/core/module/ruby2_keywords_spec.rb
+++ b/spec/ruby/core/module/ruby2_keywords_spec.rb
@@ -15,6 +15,32 @@ ruby_version_is "2.7" do
       Hash.ruby2_keywords_hash?(last).should == true
     end
 
+    it "applies to the underlying method and applies across aliasing" do
+      obj = Object.new
+
+      obj.singleton_class.class_exec do
+        def foo(*a) a.last end
+        alias_method :bar, :foo
+        ruby2_keywords :foo
+
+        def baz(*a) a.last end
+        ruby2_keywords :baz
+        alias_method :bob, :baz
+      end
+
+      last = obj.foo(1, 2, a: "a")
+      Hash.ruby2_keywords_hash?(last).should == true
+
+      last = obj.bar(1, 2, a: "a")
+      Hash.ruby2_keywords_hash?(last).should == true
+
+      last = obj.baz(1, 2, a: "a")
+      Hash.ruby2_keywords_hash?(last).should == true
+
+      last = obj.bob(1, 2, a: "a")
+      Hash.ruby2_keywords_hash?(last).should == true
+    end
+
     ruby_version_is "2.7" ... "3.0" do
       it "fixes delegation warnings when calling a method accepting keywords" do
         obj = Object.new
diff --git a/spec/ruby/core/numeric/quo_spec.rb b/spec/ruby/core/numeric/quo_spec.rb
index b4a23fd476..67bacee9b5 100644
--- a/spec/ruby/core/numeric/quo_spec.rb
+++ b/spec/ruby/core/numeric/quo_spec.rb
@@ -20,7 +20,7 @@ describe "Numeric#quo" do
     -> { 10.quo(0) }.should raise_error(ZeroDivisionError)
     -> { -10.quo(0) }.should raise_error(ZeroDivisionError)
     -> { bignum_value.quo(0) }.should raise_error(ZeroDivisionError)
-    -> { -bignum_value.quo(0) }.should raise_error(ZeroDivisionError)
+    -> { (-bignum_value).quo(0) }.should raise_error(ZeroDivisionError)
   end
 
   it "calls #to_r to convert the object to a Rational" do
diff --git a/spec/ruby/core/proc/ruby2_keywords_spec.rb b/spec/ruby/core/proc/ruby2_keywords_spec.rb
index 4f6bc151b6..1fba3b9398 100644
--- a/spec/ruby/core/proc/ruby2_keywords_spec.rb
+++ b/spec/ruby/core/proc/ruby2_keywords_spec.rb
@@ -10,6 +10,22 @@ ruby_version_is "2.7" do
       Hash.ruby2_keywords_hash?(last).should == true
     end
 
+    it "applies to the underlying method and applies across duplication" do
+      f1 = -> *a { a.last }
+      f1.ruby2_keywords
+      f2 = f1.dup
+
+      Hash.ruby2_keywords_hash?(f1.call(1, 2, a: "a")).should == true
+      Hash.ruby2_keywords_hash?(f2.call(1, 2, a: "a")).should == true
+
+      f3 = -> *a { a.last }
+      f4 = f3.dup
+      f3.ruby2_keywords
+
+      Hash.ruby2_keywords_hash?(f3.call(1, 2, a: "a")).should == true
+      Hash.ruby2_keywords_hash?(f4.call(1, 2, a: "a")).should == true
+    end
+
     ruby_version_is "2.7" ... "3.0" do
       it "fixes delegation warnings when calling a method accepting keywords" do
         obj = Object.new
diff --git a/spec/ruby/core/random/bytes_spec.rb b/spec/ruby/core/random/bytes_spec.rb
index 06e84d03bd..ed1b3a7b41 100644
--- a/spec/ruby/core/random/bytes_spec.rb
+++ b/spec/ruby/core/random/bytes_spec.rb
@@ -18,7 +18,7 @@ describe "Random#bytes" do
   end
 
   it "returns the same numeric output for a given huge seed across all implementations and platforms" do
-    rnd = Random.new(bignum_value ** 4)
+    rnd = Random.new(2 ** (63 * 4))
     rnd.bytes(2).should == "_\x91"
     rnd.bytes(1000) # skip some
     rnd.bytes(2).should == "\x17\x12"
diff --git a/spec/ruby/core/range/dup_spec.rb b/spec/ruby/core/range/dup_spec.rb
index 6c9d0c954a..976d4fd1d0 100644
--- a/spec/ruby/core/range/dup_spec.rb
+++ b/spec/ruby/core/range/dup_spec.rb
@@ -12,4 +12,10 @@ describe "Range#dup" do
     copy.end.should == "z"
     copy.should.exclude_end?
   end
+
+  it "creates an unfrozen range" do
+    (1..2).dup.should_not.frozen?
+    (1..).dup.should_not.frozen?
+    Range.new(1, 2).dup.should_not.frozen?
+  end
 end
diff --git a/spec/ruby/core/range/frozen_spec.rb b/spec/ruby/core/range/frozen_spec.rb
new file mode 100644
index 0000000000..9a3e6eb373
--- /dev/null
+++ b/spec/ruby/core/range/frozen_spec.rb
@@ -0,0 +1,27 @@
+require_relative '../../spec_helper'
+
+# There is no Range#frozen? method but this feels like the best place for these specs
+describe "Range#frozen?" do
+  ruby_version_is "3.0" do
+    it "is true for literal ranges" do
+      (1..2).should.frozen?
+      (1..).should.frozen?
+      eval("(..1)").should.frozen?
+    end
+
+    it "is true for Range.new" do
+      Range.new(1, 2).should.frozen?
+      Range.new(1, nil).should.frozen?
+      Range.new(nil, 1).should.frozen?
+    end
+
+    it "is false for instances of a subclass of Range" do
+      sub_range = Class.new(Range).new(1, 2)
+      sub_range.should_not.frozen?
+    end
+
+    it "is false for Range.allocate" do
+      Range.allocate.should_not.frozen?
+    end
+  end
+end
diff --git a/spec/ruby/core/string/split_spec.rb b/spec/ruby/core/string/split_spec.rb
index 94f6c9aaee..2e03955a26 100644
--- a/spec/ruby/core/string/split_spec.rb
+++ b/spec/ruby/core/string/split_spec.rb
@@ -224,6 +224,17 @@ describe "String#split with String" do
       end
     end
   end
+
+  it "returns an empty array when whitespace is split on whitespace" do
+    " ".split(" ").should == []
+    " \n ".split(" ").should == []
+    "  ".split(" ").should == []
+    " \t ".split(" ").should == []
+  end
+
+  it "doesn't split on non-ascii whitespace" do
+    "a\u{2008}b".split(" ").should == ["a\u{2008}b"]
+  end
 end
 
 describe "String#split with Regexp" do