Exception#initialize to take arbitrary number of args; ref #3384

src/error.c

@@ -44,8 +44,10 @@ static mrb_value
 exc_initialize(mrb_state *mrb, mrb_value exc)
 {
   mrb_value mesg;
+  int argc;
+  mrb_value *argv;
 
-  if (mrb_get_args(mrb, "|o", &mesg) == 1) {
+  if (mrb_get_args(mrb, "|o*", &mesg, &argv, &argc) >= 1) {
     mrb_iv_set(mrb, exc, mrb_intern_lit(mrb, "mesg"), mesg);
   }
   return exc;