diff options
Diffstat (limited to 'ext')
-rw-r--r-- | ext/digest/digest.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/ext/digest/digest.c b/ext/digest/digest.c index 07484f897f..92a925c616 100644 --- a/ext/digest/digest.c +++ b/ext/digest/digest.c @@ -423,15 +423,19 @@ rb_digest_class_s_hexdigest(int argc, VALUE *argv, VALUE klass) static rb_digest_metadata_t * get_digest_base_metadata(VALUE klass) { + VALUE p; VALUE obj; rb_digest_metadata_t *algo; - if (rb_ivar_defined(klass, id_metadata) == Qfalse) { - /* This class should not be subclassed in Ruby */ - rb_notimplement(); + for (p = klass; p; p = RCLASS(p)->super) { + if (rb_ivar_defined(p, id_metadata)) { + obj = rb_ivar_get(p, id_metadata); + break; + } } - obj = rb_ivar_get(klass, id_metadata); + if (!p) + rb_raise(rb_eRuntimeError, "Digest::Base cannot be directly inherited in Ruby"); Data_Get_Struct(obj, rb_digest_metadata_t, algo); |