34 lines
795 B
Rust
34 lines
795 B
Rust
// Here we check that it is allowed to lend out an element of a
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// (locally rooted) mutable, unique vector, and that we then prevent
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// modifications to the contents.
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fn takes_imm_elt(_v: &int, f: fn()) {
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f();
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}
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fn has_mut_vec_and_does_not_try_to_change_it() {
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let v = ~[mut 1, 2, 3];
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do takes_imm_elt(&v[0]) {
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}
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}
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fn has_mut_vec_but_tries_to_change_it() {
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let v = ~[mut 1, 2, 3];
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do takes_imm_elt(&v[0]) { //~ NOTE loan of mutable vec content granted here
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v[1] = 4; //~ ERROR assigning to mutable vec content prohibited due to outstanding loan
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}
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}
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fn takes_const_elt(_v: &const int, f: fn()) {
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f();
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}
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fn has_mut_vec_and_tries_to_change_it() {
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let v = ~[mut 1, 2, 3];
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do takes_const_elt(&const v[0]) {
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v[1] = 4;
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}
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}
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fn main() {
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} |