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29 lines
693 B
Rust
29 lines
693 B
Rust
// check-pass
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// gate-test-effects
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// ^ effects doesn't have a gate so we will trick tidy into thinking this is a gate test
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#![feature(const_trait_impl, effects, core_intrinsics, const_eval_select)]
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// ensure we are passing in the correct host effect in always const contexts.
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pub const fn hmm<T>() -> usize {
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// FIXME(const_trait_impl): maybe we should have a way to refer to the (hidden) effect param
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fn one() -> usize { 1 }
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const fn zero() -> usize { 0 }
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unsafe {
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std::intrinsics::const_eval_select((), zero, one)
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}
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}
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const _: () = {
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let x = hmm::<()>();
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assert!(0 == x);
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};
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pub const fn uwu(x: [u8; hmm::<()>()]) {
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let [] = x;
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}
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fn main() {}
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