Fix `Time.parse` for out of range arguments with an offset

* lib/time.rb (Time#apply_offset): Guards against a `nil` return
  value from `Time.month_days` when offsetting date.  Out of range
  values are then caught when `Time.utc` is called (as usual).
  Previously a `nil` return value from `Time.month_days` would
  have the `<` operator called on it, and raise `NoMethodError`.
  [fix GH-667]
* lib/rdoc/parser/changelog.rb (RDoc#parse_entries): fix dirty hack.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46872 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

4 files changed, 23 insertions, 3 deletions

diff --git a/ChangeLog b/ChangeLog
index 352ddf0746..0eecdacedb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,15 @@
+Sat Jul 19 11:56:36 2014  Grey Baker  <[email protected]>
+
+	* lib/time.rb (Time#apply_offset): Guards against a `nil` return
+	  value from `Time.month_days` when offsetting date.  Out of range
+	  values are then caught when `Time.utc` is called (as usual).
+
+	  Previously a `nil` return value from `Time.month_days` would
+	  have the `<` operator called on it, and raise `NoMethodError`.
+	  [fix GH-667]
+
+	* lib/rdoc/parser/changelog.rb (RDoc#parse_entries): fix dirty hack.
+
 Sat Jul 19 06:19:01 2014  Masaki Suketa <[email protected]>
 
 	* ext/win32ole/win32ole.c: refactoring. 
diff --git a/lib/rdoc/parser/changelog.rb b/lib/rdoc/parser/changelog.rb
index 782d8f09bf..75fcaaad85 100644
--- a/lib/rdoc/parser/changelog.rb
+++ b/lib/rdoc/parser/changelog.rb
@@ -145,10 +145,14 @@ class RDoc::Parser::ChangeLog < RDoc::Parser
           # HACK Ruby 1.8 does not raise ArgumentError for Time.parse "Other"
           entry_name = nil unless entry_name =~ /#{time.year}/
         rescue NoMethodError
+          # HACK Ruby 2.1.2 and earlier raises NoMethodError if time part is absent
           time, = entry_name.split '  ', 2
-          time = Time.parse time
         rescue ArgumentError
-          entry_name = nil
+          if /out of range/ =~ $!.message
+            time = Time.parse(entry_name.split('  ', 2)[0]) rescue entry_name = nil
+          else
+            entry_name = nil
+          end
         end
 
         entry_body = []
diff --git a/lib/time.rb b/lib/time.rb
index 3728fef59c..2225f68abb 100644
--- a/lib/time.rb
+++ b/lib/time.rb
@@ -214,7 +214,8 @@ class Time
         if o != 0 then hour += o; o, hour = hour.divmod(24); off += o end
         if off != 0
           day += off
-          if month_days(year, mon) < day
+          days = month_days(year, mon)
+          if days and days < day
             mon += 1
             if 12 < mon
               mon = 1
diff --git a/test/test_time.rb b/test/test_time.rb
index c516d29227..ecf07b21e9 100644
--- a/test/test_time.rb
+++ b/test/test_time.rb
@@ -307,6 +307,9 @@ class TestTimeExtension < Test::Unit::TestCase # :nodoc:
     assert_raise(ArgumentError) { Time.rfc2822("=?iso-8859-1?Q?(=C5=DA),?= 10   2 2001 23:32:26 +0900 (JST)") }
     assert_raise(ArgumentError) { Time.rfc2822("\307\341\314\343\332\311, 30 \344\346\335\343\310\321 2001 10:01:06") }
     assert_raise(ArgumentError) { Time.rfc2822("=?iso-8859-1?Q?(=BF=E5),?= 12  =?iso-8859-1?Q?9=B7=EE?= 2001 14:52:41\n+0900 (JST)") }
+
+    # Out of range arguments
+    assert_raise(ArgumentError) { Time.parse("2014-13-13T18:00:00-0900") }
   end
 
   def test_zone_0000