* eval_error.c (rb_print_undef_str): new function to raise

  NameError for undefined method.
* load.c (rb_mod_autoload_p), object.c (rb_mod_const_get),
  variable.c (rb_f_untrace_var, set_const_visibility), vm_method.c
  (rb_mod_{remove,undef,alias}_method, set_method_visibility):
  remove inadvertent symbol creation.  based on the first patch by
  Jeremy Evans at [ruby-core:38447].  [Feature #5089]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32686 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 1 deletions

diff --git a/load.c b/load.c
index 62e2cac4c6..73a6eb66af 100644
--- a/load.c
+++ b/load.c
@@ -705,7 +705,11 @@ rb_mod_autoload(VALUE mod, VALUE sym, VALUE file)
 static VALUE
 rb_mod_autoload_p(VALUE mod, VALUE sym)
 {
-    return rb_autoload_p(mod, rb_to_id(sym));
+    ID id = rb_check_id(&sym);
+    if (!id) {
+	return Qnil;
+    }
+    return rb_autoload_p(mod, id);
 }
 
 /*