* string.c (rb_str_upto): String#upto from empty string makes

  inifinite loop.  [ruby-core:09864]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@11515 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/string.c b/string.c
index fb8afdbeda..3261db61ed 100644
--- a/string.c
+++ b/string.c
@@ -1463,7 +1463,7 @@ rb_str_upto(beg, end, excl)
 	StringValue(current);
 	if (excl && rb_str_equal(current, end)) break;
 	StringValue(current);
-	if (RSTRING(current)->len > RSTRING(end)->len)
+	if (RSTRING(current)->len > RSTRING(end)->len || RSTRING(current)->len == 0)
 	    break;
     }