merge revision(s) 15575:

	* bignum.c (BIGZEROP): fix for longer Bignum zeros.  [ruby-Bugs-17454]


git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_8_6@17202 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

3 files changed, 20 insertions, 2 deletions

diff --git a/ChangeLog b/ChangeLog
index 74e37e229..14cc981a6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Jun 15 19:56:53 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* bignum.c (BIGZEROP): fix for longer Bignum zeros.  [ruby-Bugs-17454]
+
 Sun Jun 15 19:54:21 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* bignum.c (big2str_find_n1): check integer overflow.
diff --git a/bignum.c b/bignum.c
index 70a88e64d..e3d531cea 100644
--- a/bignum.c
+++ b/bignum.c
@@ -36,7 +36,21 @@ VALUE rb_cBignum;
 #define BIGLO(x) ((BDIGIT)((x) & (BIGRAD-1)))
 #define BDIGMAX ((BDIGIT)-1)
 
-#define BIGZEROP(x) (RBIGNUM(x)->len == 0 || (RBIGNUM(x)->len == 1 && BDIGITS(x)[0] == 0))
+#define BIGZEROP(x) (RBIGNUM(x)->len == 0 || \
+		     (BDIGITS(x)[0] == 0 && \
+		      (RBIGNUM(x)->len == 1 || bigzero_p(x))))
+
+static int bigzero_p(VALUE);
+static int
+bigzero_p(x)
+    VALUE x;
+{
+    long i;
+    for (i = 0; i < RBIGNUM(x)->len; ++i) {
+	if (BDIGITS(x)[i]) return 0;
+    }
+    return 1;
+}
 
 static VALUE
 bignew_1(klass, len, sign)
diff --git a/version.h b/version.h
index 73b3fa951..7ed231747 100644
--- a/version.h
+++ b/version.h
@@ -2,7 +2,7 @@
 #define RUBY_RELEASE_DATE "2008-06-15"
 #define RUBY_VERSION_CODE 186
 #define RUBY_RELEASE_CODE 20080615
-#define RUBY_PATCHLEVEL 184
+#define RUBY_PATCHLEVEL 185
 
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 8