38 lines
725 B
Rust
38 lines
725 B
Rust
// edition:2021
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// Test that we can't mutate a place if we need to deref an imm-borrow
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// to reach it.
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fn imm_mut_ref() {
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let mut x = String::new();
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let y = String::new();
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let mref_x = &mut x;
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let ref_mref_x = &mref_x;
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let c = || {
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//~^ ERROR: cannot borrow `**ref_mref_x` as mutable, as it is behind a `&` reference
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**ref_mref_x = y;
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};
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c();
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}
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fn mut_imm_ref() {
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let x = String::new();
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let y = String::new();
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let mut ref_x = &x;
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let mref_ref_x = &mut ref_x;
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let c = || {
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//~^ ERROR: cannot borrow `**mref_ref_x` as mutable, as it is behind a `&` reference
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**mref_ref_x = y;
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};
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c();
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}
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fn main() {
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imm_mut_ref();
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mut_imm_ref();
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}
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