rust/src/test/run-pass/alt-join.rs

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Rust
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use std;
import std::option;
import std::option::t;
import std::option::none;
import std::option::some;
fn foo<T>(y: &option::t<T>) {
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let x: int;
let rs: [int] = ~[];
/* tests that x doesn't get put in the precondition for the
entire if expression */
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if true {
} else { alt y { none::<T>. { x = 17; } _ { x = 42; } } rs += ~[x]; }
ret;
}
fn main() { log "hello"; foo::<int>(some::<int>(5)); }