39 lines
577 B
Rust
39 lines
577 B
Rust
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//@ known-bug: #122044
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use std::hint::black_box;
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trait Func {
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type Ret: Id;
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}
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trait Id {
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type Assoc;
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}
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impl Id for u32 {}
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impl Id for u32 {}
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impl<F: FnOnce() -> R, R: Id> Func for F {
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type Ret = R;
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}
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fn bar() -> impl Copy + Id {
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0u32
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}
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struct Foo<T: Func> {
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_func: T,
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value: Option<<<T as Func>::Ret as Id>::Assoc>,
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}
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fn main() {
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let mut fn_def = black_box(Foo {
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_func: bar,
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value: None,
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});
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let fn_ptr = black_box(Foo {
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_func: bar as fn() -> _,
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value: None,
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});
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fn_def.value = fn_ptr.value;
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}
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