encoding.c: drop dummy encoding flag

* encoding.c (enc_autoload): drop dummy encoding flag from
  the loaded encoding index.  this flag is used only in this
  source.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51251 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 8 insertions, 0 deletions

diff --git a/ext/-test-/string/enc_associate.c b/ext/-test-/string/enc_associate.c
index d6614fb298..53811620a0 100644
--- a/ext/-test-/string/enc_associate.c
+++ b/ext/-test-/string/enc_associate.c
@@ -7,8 +7,16 @@ bug_str_enc_associate(VALUE str, VALUE enc)
     return rb_enc_associate(str, rb_to_encoding(enc));
 }
 
+VALUE
+bug_str_encoding_index(VALUE self, VALUE str)
+{
+    int idx = rb_enc_get_index(str);
+    return INT2NUM(idx);
+}
+
 void
 Init_enc_associate(VALUE klass)
 {
     rb_define_method(klass, "associate_encoding!", bug_str_enc_associate, 1);
+    rb_define_singleton_method(klass, "encoding_index", bug_str_encoding_index, 1);
 }