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21 lines
416 B
Rust
21 lines
416 B
Rust
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//@ check-pass
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#![feature(tuple_trait)]
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fn assert_is_tuple<T: std::marker::Tuple + ?Sized>() {}
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struct Unsized([u8]);
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fn from_param_env<T: std::marker::Tuple + ?Sized>() {
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assert_is_tuple::<T>();
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}
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fn main() {
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assert_is_tuple::<()>();
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assert_is_tuple::<(i32,)>();
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assert_is_tuple::<(Unsized,)>();
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from_param_env::<()>();
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from_param_env::<(i32,)>();
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from_param_env::<(Unsized,)>();
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}
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