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27 lines
548 B
Rust
27 lines
548 B
Rust
// run-pass
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// Test argument patterns where we create refs to the inside of
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// boxes. Make sure that we don't free the box as we match the
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// pattern.
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#![feature(box_patterns)]
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fn getaddr(box ref x: Box<usize>) -> *const usize {
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let addr: *const usize = &*x;
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addr
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}
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fn checkval(box ref x: Box<usize>) -> usize {
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*x
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}
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pub fn main() {
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let obj: Box<_> = Box::new(1);
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let objptr: *const usize = &*obj;
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let xptr = getaddr(obj);
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assert_eq!(objptr, xptr);
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let obj = Box::new(22);
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assert_eq!(checkval(obj), 22);
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}
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