rust/src/test/compile-fail/regions-iface-3.rs

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trait get_ctxt {
fn get_ctxt() -> &self/uint;
}
fn make_gc1(gc: get_ctxt/&a) -> get_ctxt/&b {
ret gc; //~ ERROR mismatched types: expected `get_ctxt/&b` but found `get_ctxt/&a`
}
fn make_gc2(gc: get_ctxt/&a) -> get_ctxt/&b {
ret gc as get_ctxt; //~ ERROR mismatched types: expected `get_ctxt/&b` but found `get_ctxt/&a`
}
fn main() {
}