merges r23073 from trunk into ruby_1_9_1.

--
* bignum.c (rb_cmpint): FIX2INT may fail on LP64 platforms.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@23226 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 1 deletions

diff --git a/bignum.c b/bignum.c
index 35db091454..5a608774e7 100644
--- a/bignum.c
+++ b/bignum.c
@@ -56,7 +56,12 @@ rb_cmpint(VALUE val, VALUE a, VALUE b)
     if (NIL_P(val)) {
 	rb_cmperr(a, b);
     }
-    if (FIXNUM_P(val)) return FIX2INT(val);
+    if (FIXNUM_P(val)) {
+        long l = FIX2LONG(val);
+        if (l > 0) return 1;
+        if (l < 0) return -1;
+        return 0;
+    }
     if (TYPE(val) == T_BIGNUM) {
 	if (BIGZEROP(val)) return 0;
 	if (RBIGNUM_SIGN(val)) return 1;