mirror of https://github.com/rust-lang/rust
25 lines
513 B
Rust
25 lines
513 B
Rust
// Test that attempt to reborrow an `&mut` pointer in an aliasable
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// location yields an error.
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//
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// Example from compiler/rustc_borrowck/borrowck/README.md
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fn foo(t0: & &mut isize) {
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let t1 = t0;
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let p: &isize = &**t0;
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**t1 = 22; //~ ERROR cannot assign
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}
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fn foo3(t0: &mut &mut isize) {
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let t1 = &mut *t0;
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let p: &isize = &**t0; //~ ERROR cannot borrow
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**t1 = 22;
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}
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fn foo4(t0: & &mut isize) {
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let x: &mut isize = &mut **t0; //~ ERROR cannot borrow
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*x += 1;
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}
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fn main() {
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}
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