38 lines
935 B
Rust
38 lines
935 B
Rust
// Test that uninhabited saved local doesn't make the entire variant uninhabited.
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//@ run-pass
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#![allow(unused)]
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#![feature(assert_matches)]
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#![feature(coroutine_trait)]
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#![feature(coroutines, stmt_expr_attributes)]
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#![feature(never_type)]
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use std::assert_matches::assert_matches;
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use std::ops::Coroutine;
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use std::ops::CoroutineState;
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use std::pin::Pin;
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fn conjure<T>() -> T { loop {} }
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fn run<T>(x: bool, y: bool) {
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let mut c = #[coroutine] || {
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if x {
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let a : T;
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if y {
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a = conjure::<T>();
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}
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yield ();
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} else {
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let a : T;
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if y {
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a = conjure::<T>();
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}
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yield ();
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}
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};
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assert_matches!(Pin::new(&mut c).resume(()), CoroutineState::Yielded(()));
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assert_matches!(Pin::new(&mut c).resume(()), CoroutineState::Complete(()));
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}
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fn main() {
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run::<!>(false, false);
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}
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