36 lines
812 B
Rust
36 lines
812 B
Rust
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type point = { x: int, y: int };
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fn a() {
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let mut p = [mut 1];
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// Create an immutable pointer into p's contents:
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let _q: &int = &p[0]; //! NOTE loan of mutable vec content granted here
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p[0] = 5; //! ERROR assigning to mutable vec content prohibited due to outstanding loan
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}
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fn borrow(_x: [int]/&, _f: fn()) {}
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fn b() {
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// here we alias the mutable vector into an imm slice and try to
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// modify the original:
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let mut p = [mut 1];
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borrow(p) {|| //! NOTE loan of mutable vec content granted here
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p[0] = 5; //! ERROR assigning to mutable vec content prohibited due to outstanding loan
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}
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}
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fn c() {
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// Legal because the scope of the borrow does not include the
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// modification:
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let mut p = [mut 1];
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borrow(p, {||});
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p[0] = 5;
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}
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fn main() {
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}
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