24 lines
348 B
Rust
24 lines
348 B
Rust
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#![allow(unused)]
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struct X {
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x: (),
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}
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pub trait A {
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fn foo(&mut self, _: usize) -> &mut ();
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}
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impl A for X {
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fn foo(&mut self, _: usize) -> &mut () {
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&mut self.x
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}
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}
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impl X {
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fn foo(&mut self, _: usize) -> &mut Self {
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self
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}
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}
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fn main() {
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let mut x = X { x: () };
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*x.foo(0) = (); //~ ERROR E0308
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}
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