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20 lines
414 B
Rust
20 lines
414 B
Rust
// Regression test for #129021.
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trait ToArg<T> {
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type Arg;
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}
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impl<T, U> ToArg<T> for U {
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type Arg = T;
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}
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fn extend_inner<'a, 'b>(x: &'a str) -> <&'b &'a () as ToArg<&'b str>>::Arg { x }
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fn extend<'a, 'b>(x: &'a str) -> &'b str {
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(extend_inner as fn(_) -> _)(x)
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//~^ ERROR lifetime may not live long enough
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}
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fn main() {
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let y = extend(&String::from("Hello World"));
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println!("{}", y);
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}
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