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31 lines
499 B
Rust
31 lines
499 B
Rust
// known-bug: #110395
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#![feature(const_trait_impl)]
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use std::marker::PhantomData;
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struct S<T>(PhantomData<T>);
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impl<T> Copy for S<T> {}
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impl<T> Clone for S<T> {
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fn clone(&self) -> Self {
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S(PhantomData)
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}
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}
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impl<T> const std::ops::Add for S<T> {
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type Output = Self;
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fn add(self, _: Self) -> Self {
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S(std::marker::PhantomData)
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}
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}
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const fn twice<T: std::ops::Add>(arg: S<T>) -> S<T> {
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arg + arg
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}
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fn main() {
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let _ = twice(S(PhantomData::<i32>));
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}
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