2 files changed, 7 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index 5f03b37d62..58a221e451 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Thu Jun 13 18:54:11 2013  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* bignum.c (integer_unpack_num_bdigits_generic): reorder terms (but not
+	  changed the intention of the expression) because VC++ reports a
+	  warning for it.  reported by ko1 via IRC.
+
 Thu Jun 13 18:53:14 2013  Tanaka Akira  <akr@fsij.org>
 
 	* test/ruby/test_thread.rb (test_thread_local_security): Don't create
diff --git a/bignum.c b/bignum.c
index 42d0a74d6c..5df4958aca 100644
--- a/bignum.c
+++ b/bignum.c
@@ -1184,7 +1184,7 @@ integer_unpack_num_bdigits_generic(size_t numwords, size_t wordsize, size_t nail
         return num_digits2;
     }
     else {
-        size_t tmp1 = - (CHAR_BIT * r3 - r1 * r2);
+        size_t tmp1 = r1 * r2 - CHAR_BIT * r3;
         size_t q4 = tmp1 / BITSPERDIG;
         int r4 = (int)(tmp1 % BITSPERDIG);
         size_t num_digits2 = num_digits1 - q4;