mirror of https://github.com/rust-lang/rust
83 lines
1.5 KiB
Rust
83 lines
1.5 KiB
Rust
// All the possible mutability error cases.
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#![allow(unused)]
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type MakeRef = fn() -> &'static (i32,);
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type MakePtr = fn() -> *const (i32,);
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fn named_ref(x: &(i32,)) {
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*x = (1,); //~ ERROR
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x.0 = 1; //~ ERROR
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&mut *x; //~ ERROR
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&mut x.0; //~ ERROR
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}
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fn unnamed_ref(f: MakeRef) {
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*f() = (1,); //~ ERROR
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f().0 = 1; //~ ERROR
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&mut *f(); //~ ERROR
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&mut f().0; //~ ERROR
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}
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unsafe fn named_ptr(x: *const (i32,)) {
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*x = (1,); //~ ERROR
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(*x).0 = 1; //~ ERROR
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&mut *x; //~ ERROR
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&mut (*x).0; //~ ERROR
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}
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unsafe fn unnamed_ptr(f: MakePtr) {
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*f() = (1,); //~ ERROR
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(*f()).0 = 1; //~ ERROR
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&mut *f(); //~ ERROR
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&mut (*f()).0; //~ ERROR
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}
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fn fn_ref<F: Fn()>(f: F) -> F { f }
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fn ref_closure(mut x: (i32,)) {
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fn_ref(|| {
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x = (1,); //~ ERROR
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x.0 = 1; //~ ERROR
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&mut x; //~ ERROR
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&mut x.0; //~ ERROR
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});
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fn_ref(move || {
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x = (1,); //~ ERROR
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x.0 = 1; //~ ERROR
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&mut x; //~ ERROR
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&mut x.0; //~ ERROR
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});
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}
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fn imm_local(x: (i32,)) { //~ ERROR
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&mut x;
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&mut x.0;
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}
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fn imm_capture(x: (i32,)) {
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|| {
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x = (1,); //~ ERROR
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x.0 = 1; //~ ERROR
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&mut x; //~ ERROR
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&mut x.0; //~ ERROR
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};
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move || {
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x = (1,); //~ ERROR
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x.0 = 1; //~ ERROR
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&mut x; //~ ERROR
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&mut x.0; //~ ERROR
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};
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}
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static X: (i32,) = (0,);
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fn imm_static() {
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X = (1,); //~ ERROR
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X.0 = 1; //~ ERROR
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&mut X; //~ ERROR
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&mut X.0; //~ ERROR
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}
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fn main() {}
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