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https://github.com/rust-lang/rust
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27 lines
785 B
Rust
27 lines
785 B
Rust
//compile-flags: --edition 2024 -Zunstable-options
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// run-pass
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// needs-unwind
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#![feature(gen_blocks)]
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fn main() {
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let mut iter = gen {
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yield 42;
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panic!("foo");
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yield 69; //~ WARN: unreachable statement
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};
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assert_eq!(iter.next(), Some(42));
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let mut tmp = std::panic::AssertUnwindSafe(&mut iter);
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match std::panic::catch_unwind(move || tmp.next()) {
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Ok(_) => unreachable!(),
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Err(err) => assert_eq!(*err.downcast::<&'static str>().unwrap(), "foo"),
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}
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match std::panic::catch_unwind(move || iter.next()) {
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Ok(_) => unreachable!(),
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Err(err) => assert_eq!(
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*err.downcast::<&'static str>().unwrap(),
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"`gen fn` should just keep returning `None` after panicking",
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),
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}
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}
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