* lib/fileutils.rb: fix behavior when mkdir/mkdir_p accepted "/".

* test/fileutils/test_fileutils.rb: add test for above change.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41047 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,9 @@
+Mon Jun  3 23:11:19 2013  Ayumu AIZAWA  <ayumu.aizawa@gmail.com>
+
+	* lib/fileutils.rb: fix behavior when mkdir/mkdir_p accepted "/".
+	* test/fileutils/test_fileutils.rb: add test for above change.
+	  Patched by Mitsunori Komatsu. [GH-319]
+
 Mon Jun  3 19:02:20 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* dir.c (is_hfs): use the file descriptor instead of a path.

lib/fileutils.rb

@@ -154,6 +154,11 @@ module FileUtils
   end
   module_function :uptodate?
 
+  def remove_tailing_slash(dir)
+    dir == '/' ? dir : dir.chomp(?/)
+  end
+  private_module_function :remove_tailing_slash
+
   #
   # Options: mode noop verbose
   #
@@ -200,7 +205,7 @@ module FileUtils
     fu_output_message "mkdir -p #{options[:mode] ? ('-m %03o ' % options[:mode]) : ''}#{list.join ' '}" if options[:verbose]
     return *list if options[:noop]
 
-    list.map {|path| path.chomp(?/) }.each do |path|
+    list.map {|path| remove_tailing_slash(path)}.each do |path|
       # optimize for the most common case
       begin
         fu_mkdir path, options[:mode]
@@ -237,7 +242,7 @@ module FileUtils
   OPT_TABLE['makedirs'] = [:mode, :noop, :verbose]
 
   def fu_mkdir(path, mode)   #:nodoc:
-    path = path.chomp(?/)
+    path = remove_tailing_slash(path)
     if mode
       Dir.mkdir path, mode
       File.chmod mode, path

test/fileutils/test_fileutils.rb

@@ -758,6 +758,10 @@ class TestFileUtils
     assert_directory 'tmp/tmp'
     assert_equal 0700, (File.stat('tmp/tmp').mode & 0777) if have_file_perm?
     Dir.rmdir 'tmp/tmp'
+
+    assert_raise(Errno::EISDIR) {
+      mkdir '/'
+    }
   end
 
   def test_mkdir_file_perm
@@ -831,6 +835,8 @@ class TestFileUtils
     # (rm(1) try to chdir to parent directory, it fails to remove directory.)
     Dir.rmdir 'tmp/tmp'
     Dir.rmdir 'tmp'
+
+    mkdir_p '/'
   end
 
   def test_mkdir_p_file_perm