commit e1b69a5650a1154d55412487a40d6ad1ff022ba4
Author: FURUHASHI Sadayuki <frsyuki@users.sourceforge.jp>
Date:   Tue Feb 24 21:50:12 2015 -0800

    time.rb: Time.strptime with %s.%N format should not ignore sec_fraction

diff --git a/lib/time.rb b/lib/time.rb
index 8edc9e6..826ffc7 100644
--- a/lib/time.rb
+++ b/lib/time.rb
@@ -426,7 +426,9 @@ class Time
       d = Date._strptime(date, format)
       raise ArgumentError, "invalid strptime format - `#{format}'" unless d
       if seconds = d[:seconds]
-        t = Time.at(seconds)
+        sec_fraction = d[:sec_fraction]
+        usec = sec_fraction ? sec_fraction * 1000000 : 0
+        t = Time.at(seconds, usec)
         if zone = d[:zone]
           force_zone!(t, zone)
         end