19 lines
404 B
Rust
19 lines
404 B
Rust
pure fn is_even(i: int) -> bool { (i%2) == 0 }
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fn even(i: int) : is_even(i) -> int { i }
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fn main() {
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let mut x: int = 42;
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loop {
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loop {
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loop {
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check is_even(x);
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even(x); // OK
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loop {
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even(x); //~ ERROR unsatisfied precondition
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x = 11;
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}
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}
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}
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}
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}
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