27 lines
603 B
Rust
27 lines
603 B
Rust
//@ run-pass
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// Test that unboxed closures in contexts with free type parameters
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// monomorphize correctly (issue #16791)
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fn main(){
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fn bar<'a, T:Clone+'a> (t: T) -> Box<dyn FnMut()->T + 'a> {
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Box::new(move || t.clone())
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}
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let mut f = bar(42_u32);
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assert_eq!(f(), 42);
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let mut f = bar("forty-two");
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assert_eq!(f(), "forty-two");
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let x = 42_u32;
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let mut f = bar(&x);
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assert_eq!(f(), &x);
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#[derive(Clone, Copy, Debug, PartialEq)]
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struct Foo(usize, &'static str);
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let x = Foo(42, "forty-two");
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let mut f = bar(x);
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assert_eq!(f(), x);
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}
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