23 lines
560 B
Rust
23 lines
560 B
Rust
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// Regression test for issue 57464.
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//
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// Closure are (surprisingly) allowed to outlive their signature. As such it
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// was possible to end up with `ReScope`s appearing in the concrete type of an
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// opaque type. As all regions are now required to outlive the bound in an
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// opaque type we avoid the issue here.
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// compile-pass
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struct A<F>(F);
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unsafe impl <'a, 'b, F: Fn(&'a i32) -> &'b i32> Send for A<F> {}
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fn wrapped_closure() -> impl Sized {
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let f = |x| x;
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f(&0);
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A(f)
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}
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fn main() {
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let x: Box<dyn Send> = Box::new(wrapped_closure());
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}
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