merge revision(s) 70f69f85395f5735429cd45136d7de2742f08b72: [Backport #18941]

	[ruby/fileutils] Fix mkdir_p hanging on Windows when trying to create
	 a file on a offline drive

	https://github.com/ruby/fileutils/commit/9cc6a082d7
	---
	 lib/fileutils.rb                 | 2 +-
	 test/fileutils/test_fileutils.rb | 8 ++++++++
	 2 files changed, 9 insertions(+), 1 deletion(-)

3 files changed, 10 insertions, 2 deletions

diff --git a/lib/fileutils.rb b/lib/fileutils.rb
index c115005163..32968f0a1a 100644
--- a/lib/fileutils.rb
+++ b/lib/fileutils.rb
@@ -212,7 +212,7 @@ module FileUtils
       path = remove_trailing_slash(item)
 
       stack = []
-      until File.directory?(path)
+      until File.directory?(path) || File.dirname(path) == path
         stack.push path
         path = File.dirname(path)
       end
diff --git a/test/fileutils/test_fileutils.rb b/test/fileutils/test_fileutils.rb
index 36b5d6ef50..9a648276fa 100644
--- a/test/fileutils/test_fileutils.rb
+++ b/test/fileutils/test_fileutils.rb
@@ -1098,6 +1098,14 @@ class TestFileUtils < Test::Unit::TestCase
     ensure
       Dir.rmdir(drive) if drive and File.directory?(drive)
     end
+
+    def test_mkdir_p_offline_drive
+      offline_drive = ("A".."Z").to_a.reverse.find {|d| !File.exist?("#{d}:/") }
+
+      assert_raise(Errno::ENOENT) {
+        mkdir_p "#{offline_drive}:/new_dir"
+      }
+    end
   end
 
   def test_mkdir_p_file_perm
diff --git a/version.h b/version.h
index 70ce3a0bcd..01479b5b43 100644
--- a/version.h
+++ b/version.h
@@ -11,7 +11,7 @@
 # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR
 #define RUBY_VERSION_TEENY 3
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 61
+#define RUBY_PATCHLEVEL 62
 
 #define RUBY_RELEASE_YEAR 2022
 #define RUBY_RELEASE_MONTH 9