24 lines
754 B
Rust
24 lines
754 B
Rust
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// xfail-fast (compile-flags unsupported on windows)
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// compile-flags:--borrowck=err
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pure fn pure_borrow(_x: &int, _y: ()) {}
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fn test1(x: @mut ~int) {
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// Here, evaluating the second argument actually invalidates the
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// first borrow, even though it occurs outside of the scope of the
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// borrow!
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pure_borrow(*x, *x = ~5); //! ERROR illegal borrow unless pure: unique value in aliasable, mutable location
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//!^ NOTE impure due to assigning to dereference of mutable @ pointer
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}
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fn test2() {
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let mut x = ~1;
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// Same, but for loanable data:
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pure_borrow(x, x = ~5); //! ERROR assigning to mutable local variable prohibited due to outstanding loan
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//!^ NOTE loan of mutable local variable granted here
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}
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fn main() {
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}
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