2 files changed, 6 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog
index dfc4039995..5b03e712b6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Aug  6 18:59:23 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* file.c (realpath_rec): rb_str_modify depends on the length, so
+	  resize instead.
+
 Fri Aug  6 18:56:14 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* Makefile.in (clean-ext): fixed directories to be removed.
diff --git a/file.c b/file.c
index b541a7dba0..962fa9ac4e 100644
--- a/file.c
+++ b/file.c
@@ -3229,8 +3229,7 @@ realpath_rec(long *prefixlenp, VALUE *resolvedp, char *unresolved, VALUE loopche
                 char *resolved_names = RSTRING_PTR(*resolvedp) + *prefixlenp;
                 char *lastsep = rb_path_last_separator(resolved_names);
                 long len = lastsep ? lastsep - resolved_names : 0;
-                rb_str_modify(*resolvedp);
-                rb_str_set_len(*resolvedp, *prefixlenp + len);
+                rb_str_resize(*resolvedp, *prefixlenp + len);
             }
         }
         else {