* time.c: raise exception when minutes of utc_offset is out of 00-59.

patch is from Kenichi Kamiya.
  [ruby-dev:47539] [Bug #8679]

* test/ruby/test_time.rb: test for above.
  patch is from Kenichi Kamiya.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47676 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,12 @@
+Sun Sep 21 13:54:36 2014  Masaki Matsushita <glass.saga@gmail.com>
+
+	* time.c: raise exception when minutes of utc_offset is out of 00-59.
+	  patch is from Kenichi Kamiya.
+	  [ruby-dev:47539] [Bug #8679]
+
+	* test/ruby/test_time.rb: test for above.
+	  patch is from Kenichi Kamiya.
+
 Sun Sep 21 19:04:08 2014  Narihiro Nakamura <authornari@gmail.com>
 
 	* st.c (do_hash_bin): unused macro.

test/ruby/test_time.rb

@@ -46,6 +46,7 @@ class TestTime < Test::Unit::TestCase
     tm = [2001,2,28,23,59,30]
     t = Time.new(*tm, "-12:00")
     assert_equal([2001,2,28,23,59,30,-43200], [t.year, t.month, t.mday, t.hour, t.min, t.sec, t.gmt_offset], bug4090)
+    assert_raise(ArgumentError) { Time.new(2000,1,1, 0,0,0, "+01:60") }
   end
 
   def test_time_add()

time.c

@@ -2092,6 +2092,7 @@ utc_offset_arg(VALUE arg)
 	    if (!ISDIGIT(s[1]) || !ISDIGIT(s[2])) goto invalid_utc_offset;
 	    if (s[3] != ':') goto invalid_utc_offset;
 	    if (!ISDIGIT(s[4]) || !ISDIGIT(s[5])) goto invalid_utc_offset;
+	    if (s[4] > '5') goto invalid_utc_offset;
 	    break;
 	  default:
 	    goto invalid_utc_offset;