mirror of https://github.com/rust-lang/rust
29 lines
573 B
Rust
29 lines
573 B
Rust
#![feature(unsized_tuple_coercion, unsized_fn_params)]
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struct A<X: ?Sized>(X);
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fn udrop<T: ?Sized>(_x: T) {}
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fn foo() -> Box<[u8]> {
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Box::new(*b"foo")
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}
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fn tfoo() -> Box<(i32, [u8])> {
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Box::new((42, *b"foo"))
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}
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fn afoo() -> Box<A<[u8]>> {
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Box::new(A(*b"foo"))
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}
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impl std::ops::Add<i32> for A<[u8]> {
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type Output = ();
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fn add(self, _rhs: i32) -> Self::Output {}
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}
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fn main() {
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udrop::<(i32, [u8])>((42, *foo()));
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//~^ERROR E0277
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udrop::<A<[u8]>>(A { 0: *foo() });
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//~^ERROR E0277
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udrop::<A<[u8]>>(A(*foo()));
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//~^ERROR E0277
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}
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