Metadata decoding of more than one attribute like mutable and non_owned broken #7017
Description
It seems the decoding of [mutable] and [non_owned] is broken: specifically it seems they are ignored when applied on a struct in an external module, when another attribute follows.
In particular, it seems that when more than one attribute is present, only the last attribute survives encode+decode, and the others are somehow lost.
extern mod std;
use core::cell::Cell;
use std::rc::RcMut;
use std::arc::RWARC;
fn check_const<T: Const>(v: &T)
{
}
fn check_owned<T: Owned>(v: &T)
{
}
#[mutable]
#[deriving(Clone)]
pub struct MyCell<T> {
priv value: Option<T>
}
fn test(c: &Cell<u32>, m: &RcMut<u32>, a: &RWARC<u32>, mc: &MyCell<u32>)
{
// these succeed but should fail
check_const(c);
check_owned(m);
// these fail as expected
check_const(m);
check_const(a);
check_const(mc);
}