* error.c (exc_equal): try implicit conversion for delegator.

  [ruby-core:41979] [Bug #5865]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34291 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 1 deletions

diff --git a/error.c b/error.c
index 6844f992a6..a600b171db 100644
--- a/error.c
+++ b/error.c
@@ -732,10 +732,14 @@ exc_equal(VALUE exc, VALUE obj)
     CONST_ID(id_mesg, "mesg");
 
     if (rb_obj_class(exc) != rb_obj_class(obj)) {
-	ID id_message, id_backtrace;
+	ID id_exception, id_message, id_backtrace;
+	CONST_ID(id_exception, "exception");
 	CONST_ID(id_message, "message");
 	CONST_ID(id_backtrace, "backtrace");
 
+	obj = rb_check_funcall(obj, id_exception, 0, 0);
+	if (obj == Qundef) return Qfalse;
+	if (rb_obj_class(exc) != rb_obj_class(obj)) return Qfalse;
 	mesg = rb_check_funcall(obj, id_message, 0, 0);
 	if (mesg == Qundef) return Qfalse;
 	backtrace = rb_check_funcall(obj, id_backtrace, 0, 0);