39 lines
729 B
Rust
39 lines
729 B
Rust
// Regression test for #84408.
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// check-pass
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#![feature(generic_const_exprs)]
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#![allow(incomplete_features)]
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trait Melon<const X: usize> {
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fn new(arr: [i32; X]) -> Self;
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fn change<T: Melon<X>>(self) -> T;
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}
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struct Foo([i32; 5]);
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struct Bar<const A: usize, const B: usize>([i32; A + B])
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where
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[(); A + B]: ;
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impl Melon<5> for Foo {
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fn new(arr: [i32; 5]) -> Self {
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Foo(arr)
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}
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fn change<T: Melon<5>>(self) -> T {
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T::new(self.0)
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}
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}
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impl<const A: usize, const B: usize> Melon<{ A + B }> for Bar<A, B>
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where
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[(); A + B]: ,
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{
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fn new(arr: [i32; A + B]) -> Self {
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Bar(arr)
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}
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fn change<T: Melon<{ A + B }>>(self) -> T {
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T::new(self.0)
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}
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}
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fn main() {}
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