rust/src/test/compile-fail/borrowck-anon-fields-tuple.rs
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2013-09-25 14:27:42 -07:00

36 lines
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Rust

// Tests that we are able to distinguish when loans borrow different
// anonymous fields of a tuple vs the same anonymous field.
fn distinct_variant() {
let mut y = (1, 2);
let a = match y {
(ref mut a, _) => a
};
let b = match y {
(_, ref mut b) => b
};
*a += 1;
*b += 1;
}
fn same_variant() {
let mut y = (1, 2);
let a = match y {
(ref mut a, _) => a
};
let b = match y {
(ref mut b, _) => b //~ ERROR cannot borrow
};
*a += 1;
*b += 1;
}
fn main() {
}