* bignum.c (rb_big2str0): should preserve sign mark.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@12902 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 8 insertions, 4 deletions

diff --git a/ChangeLog b/ChangeLog
index f855d4ad7..15f8c9d32 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Wed Aug  8 11:25:25 2007  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* bignum.c (rb_big2str0): should preserve sign mark.
+
 Wed Aug  8 11:02:43 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* common.mk (btest-miniruby, test-sample): split the test target
diff --git a/bignum.c b/bignum.c
index 15a5417a0..7aed3af8a 100644
--- a/bignum.c
+++ b/bignum.c
@@ -867,15 +867,15 @@ rb_big2str0(VALUE x, int base, int trim)
 #if SIZEOF_BDIGITS > 2
     hbase *= hbase;
 #endif
-    off = !RTEST(trim) && !RBIGNUM(x)->sign;
+    off = !RTEST(trim) || !RBIGNUM(x)->sign;
     xx = rb_big_clone(x);
     RBIGNUM(xx)->sign = 1;
     if (n1 <= KARATSUBA_DIGITS) {
-        len = big2str_orig(xx, base, ptr + off, 2*n1, hbase, RTEST(trim));
+        len = off + big2str_orig(xx, base, ptr + off, 2*n1, hbase, RTEST(trim));
     }
     else {
-        len = big2str_karatsuba(xx, base, ptr + off, n1,
-                                2*n1, hbase, RTEST(trim));
+        len = off + big2str_karatsuba(xx, base, ptr + off, n1,
+                                      2*n1, hbase, RTEST(trim));
     }
 
     ptr[len] = '\0';