* re.c (KR_REHASH): should cast to unsigned for 64bit CPU.

  [ruby-core:06721]


git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_8@9594 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/re.c b/re.c
index ab60aba1c..ed51ee483 100644
--- a/re.c
+++ b/re.c
@@ -105,7 +105,7 @@ rb_memsearch(x0, m, y0, n)
     int d;
     unsigned long hx, hy;
 
-#define KR_REHASH(a, b, h) (((h) << 1) - ((a)<<d) + (b))
+#define KR_REHASH(a, b, h) (((h) << 1) - (((unsigned long)(a))<<d) + (b))
 
     if (m > n) return -1;
     s = y; e = s + n - m;