* variable.c (rb_path2class): get rid of dangling pointer caused by

  optimized out value.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@12562 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 8 insertions, 3 deletions

diff --git a/variable.c b/variable.c
index 44e2403639..e00f1ef6eb 100644
--- a/variable.c
+++ b/variable.c
@@ -241,16 +241,21 @@ rb_path2class(path)
     const char *pbeg, *p;
     ID id;
     VALUE c = rb_cObject;
+    VALUE str = 0;
 
     if (path[0] == '#') {
 	rb_raise(rb_eArgError, "can't retrieve anonymous class %s", path);
     }
     pbeg = p = path;
     while (*p) {
-	VALUE str;
-
 	while (*p && *p != ':') p++;
-	str = rb_str_new(pbeg, p-pbeg);
+	if (str) {
+	    RSTRING(str)->len = 0;
+	    rb_str_cat(str, pbeg, p-pbeg);
+	}
+	else {
+	    str = rb_str_new(pbeg, p-pbeg);
+	}
 	id = rb_intern(RSTRING(str)->ptr);
 	if (p[0] == ':') {
 	    if (p[1] != ':') goto undefined_class;