mirror of https://github.com/rust-lang/rust
20 lines
463 B
Rust
20 lines
463 B
Rust
//@ run-pass
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// Test that we are able to infer a suitable kind for this closure
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// that is just called (`FnMut`).
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fn main() {
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let mut counter = 0;
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{
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// Here this must be inferred to FnMut so that it can mutate counter:
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let mut tick1 = || counter += 1;
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// In turn, tick2 must be inferred to FnMut so that it can call tick1:
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let mut tick2 = || { tick1(); tick1(); };
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tick2();
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}
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assert_eq!(counter, 2);
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}
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