github
diff --git a/‎array.c
Lines changed: 1 addition & 0 deletions b/‎array.c
Lines changed: 1 addition & 0 deletions
diff --git a/‎test/ruby/test_array.rb
Lines changed: 59 additions & 0 deletions b/‎test/ruby/test_array.rb
Lines changed: 59 additions & 0 deletions
@@ -3540,6 +3540,7 @@ static VALUE
 rb_ary_reject_bang(VALUE ary)
 {
     RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);
+    rb_ary_modify(ary);
     return ary_reject_bang(ary);
 }
 
 
@@ -1308,6 +1308,65 @@ def test_reject!
     assert_equal(@cls[7, 8, 9, 10], a, bug2545)
   end
 
+  def test_shared_array_reject!
+    c = []
+    b = [1, 2, 3, 4]
+    3.times do
+      a = b.dup
+      c << a.dup
+
+      begin
+        a.reject! do |x|
+          case x
+          when 2 then true
+          when 3 then raise StandardError, 'Oops'
+          else false
+          end
+        end
+      rescue StandardError
+      end
+
+      c << a.dup
+    end
+
+    bug90781 = '[ruby-core:90781]'
+    assert_equal [[1, 2, 3, 4],
+                  [1, 3, 4],
+                  [1, 2, 3, 4],
+                  [1, 3, 4],
+                  [1, 2, 3, 4],
+                  [1, 3, 4]], c, bug90781
+  end
+
+  def test_iseq_shared_array_reject!
+    c = []
+    3.times do
+      a = [1, 2, 3, 4]
+      c << a.dup
+
+      begin
+        a.reject! do |x|
+          case x
+          when 2 then true
+          when 3 then raise StandardError, 'Oops'
+          else false
+          end
+        end
+      rescue StandardError
+      end
+
+      c << a.dup
+    end
+
+    bug90781 = '[ruby-core:90781]'
+    assert_equal [[1, 2, 3, 4],
+                  [1, 3, 4],
+                  [1, 2, 3, 4],
+                  [1, 3, 4],
+                  [1, 2, 3, 4],
+                  [1, 3, 4]], c, bug90781
+  end
+
   def test_replace
     a = @cls[ 1, 2, 3]
     a_id = a.__id__
Original file line number	Diff line number	Diff line change
`@@ -3540,6 +3540,7 @@ static VALUE`
`3540`	`3540`	`rb_ary_reject_bang(VALUE ary)`
`3541`	`3541`	`{`
`3542`	`3542`	`RETURN_SIZED_ENUMERATOR(ary, 0, 0, ary_enum_length);`
	`3543`	`+ rb_ary_modify(ary);`
`3543`	`3544`	`return ary_reject_bang(ary);`
`3544`	`3545`	`}`
`3545`	`3546`