31 lines
694 B
Rust
31 lines
694 B
Rust
// Note: it would be nice to give fewer warnings in these cases.
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fn mutate_by_mut_ref(&x: uint) {
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x = 0u;
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}
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fn mutate_by_ref(&&x: uint) {
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//!^ WARNING unused variable: `x`
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x = 0u; //! ERROR assigning to argument
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}
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fn mutate_by_val(++x: uint) {
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//!^ WARNING unused variable: `x`
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x = 0u; //! ERROR assigning to argument
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}
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fn mutate_by_copy(+x: uint) {
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//!^ WARNING unused variable: `x`
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x = 0u; //! ERROR assigning to argument
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//!^ WARNING value assigned to `x` is never read
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}
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fn mutate_by_move(-x: uint) {
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//!^ WARNING unused variable: `x`
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x = 0u; //! ERROR assigning to argument
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//!^ WARNING value assigned to `x` is never read
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}
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fn main() {
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}
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