merge revision(s) e019dd24df4ed7063ad80d4c2e4070141793f598,7954bb056be30e86c419fe3792064d28990a4999,7d3fdfb27dac456827b004d9e66a44b15f8cd762: [Backport #17736]

	Ensure the receiver is modifiable before shrinking [Bug #17736]

	* Ensure the receiver is modifiable before shinking [Bug #17736]

	* Assert the receivers are not modified
	---
	 array.c                 |  1 +
	 test/ruby/test_array.rb | 36 ++++++++++++++++++++++++++++++++++++
	 2 files changed, 37 insertions(+)

	Some Hash destructive methods ensure the receiver modifiable [Bug
	 #17736]

	refs:

	* https://bugs.ruby-lang.org/issues/17736
	* https://github.com/ruby/ruby/pull/4296

	This commit aims to cover following methods

	* Hash#select!
	* Hash#filter!
	* Hash#keep_if
	* Hash#reject!
	* Hash#delete_if

	I think these are not all.

	---

	* Ensure the receiver is modifiable or not
	* Assert the receiver is not modified
	---
	 hash.c                 |  2 ++
	 test/ruby/test_hash.rb | 42 ++++++++++++++++++++++++++++++++++++++++++
	 2 files changed, 44 insertions(+)

	Hash#transform_values! ensures receiver modifiable in block [Bug
	 #17736]

	---
	 hash.c                 | 1 +
	 test/ruby/test_hash.rb | 9 +++++++++
	 2 files changed, 10 insertions(+)

1 files changed, 36 insertions, 0 deletions

diff --git a/test/ruby/test_array.rb b/test/ruby/test_array.rb
index 522b58e214..789531fb8c 100644
--- a/test/ruby/test_array.rb
+++ b/test/ruby/test_array.rb
@@ -754,6 +754,15 @@ class TestArray < Test::Unit::TestCase
     a = @cls[ 5, 6, 7, 8, 9, 10 ]
     assert_equal(9, a.delete_if {|i| break i if i > 8; i < 7})
     assert_equal(@cls[7, 8, 9, 10], a, bug2545)
+
+    assert_raise(FrozenError) do
+      a = @cls[1, 2, 3, 42]
+      a.delete_if do
+        a.freeze
+        true
+      end
+    end
+    assert_equal(@cls[1, 2, 3, 42], a)
   end
 
   def test_dup
@@ -1322,6 +1331,15 @@ class TestArray < Test::Unit::TestCase
     a = @cls[ 5, 6, 7, 8, 9, 10 ]
     assert_equal(9, a.reject! {|i| break i if i > 8; i < 7})
     assert_equal(@cls[7, 8, 9, 10], a, bug2545)
+
+    assert_raise(FrozenError) do
+      a = @cls[1, 2, 3, 42]
+      a.reject! do
+        a.freeze
+        true
+      end
+    end
+    assert_equal(@cls[1, 2, 3, 42], a)
   end
 
   def test_shared_array_reject!
@@ -2599,6 +2617,15 @@ class TestArray < Test::Unit::TestCase
     a = @cls[ 1, 2, 3, 4, 5 ]
     a.select! {|i| a.clear if i == 5; false }
     assert_equal(0, a.size, bug13053)
+
+    assert_raise(FrozenError) do
+      a = @cls[1, 2, 3, 42]
+      a.select! do
+        a.freeze
+        false
+      end
+    end
+    assert_equal(@cls[1, 2, 3, 42], a)
   end
 
   # also select!
@@ -2614,6 +2641,15 @@ class TestArray < Test::Unit::TestCase
     a = @cls[ 1, 2, 3, 4, 5 ]
     assert_equal(a, a.keep_if { |i| i > 3 })
     assert_equal(@cls[4, 5], a)
+
+    assert_raise(FrozenError) do
+      a = @cls[1, 2, 3, 42]
+      a.keep_if do
+        a.freeze
+        false
+      end
+    end
+    assert_equal(@cls[1, 2, 3, 42], a)
   end
 
   def test_filter