mirror of https://github.com/rust-lang/rust.git
38 lines
677 B
Rust
38 lines
677 B
Rust
// Test that overloaded index expressions with DST result types
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// can't be used as rvalues
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use std::ops::Index;
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use std::fmt::Debug;
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#[derive(Copy, Clone)]
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struct S;
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impl Index<usize> for S {
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type Output = str;
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fn index(&self, _: usize) -> &str {
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"hello"
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}
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}
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#[derive(Copy, Clone)]
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struct T;
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impl Index<usize> for T {
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type Output = dyn Debug + 'static;
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fn index<'a>(&'a self, idx: usize) -> &'a (dyn Debug + 'static) {
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static x: usize = 42;
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&x
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}
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}
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fn main() {
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S[0];
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//~^ ERROR cannot move out of index of `S`
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//~^^ ERROR E0161
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T[0];
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//~^ ERROR cannot move out of index of `T`
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//~^^ ERROR E0161
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}
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