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17 lines
394 B
Rust
17 lines
394 B
Rust
//@ run-pass
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#![allow(non_shorthand_field_patterns)]
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struct Pair { a: Box<isize>, b: Box<isize> }
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pub fn main() {
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let mut x: Box<_> = Box::new(Pair { a: Box::new(10), b: Box::new(20) });
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let x_internal = &mut *x;
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match *x_internal {
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Pair {a: ref mut a, b: ref mut _b} => {
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assert_eq!(**a, 10);
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*a = Box::new(30);
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assert_eq!(**a, 30);
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}
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}
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}
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