rust/tests/ui/borrowck/borrowck-uninit.rs

fn foo(x: isize) { println!("{}", x); }

fn main() {
    let x: isize;
    foo(x); //~ ERROR E0381

    // test for #120634
    struct A(u8);
    struct B { d: u8 }
    let (a, );
    let [b, ];
    let A(c);
    let B { d };
    let _: (u8, u8, u8, u8) = (a, b, c, d);
    //~^ ERROR used binding `a`
    //~| ERROR used binding `b`
    //~| ERROR used binding `c`
    //~| ERROR used binding `d`
}
Update compile fail tests to use isize. 2015-01-08 21:54:35 +11:00			`fn foo(x: isize) { println!("{}", x); }`
new liveness pass to supercede last_use / initedness 2012-05-19 05:52:01 -07:00
			`fn main() {`
Update compile fail tests to use isize. 2015-01-08 21:54:35 +11:00			`let x: isize;`
On partial uninit error point at where we need init When a binding is declared without a value, borrowck verifies that all codepaths have one assignment to them to initialize them fully. If there are any cases where a condition can be met that leaves the binding uninitialized or we attempt to initialize a field of an unitialized binding, we emit E0381. We now look at all the statements that initialize the binding, and use them to explore branching code paths that don't and point at them. If we find no potential places where an assignment to the binding might be missing, we display the spans of all the existing initializers to provide some context. 2022-06-21 11:57:45 -07:00			`foo(x); //~ ERROR E0381`
Fix incorrect suggestion for uninitialize binding in destructuring pattern 2024-02-04 17:11:29 +00:00
			`// test for #120634`
			`struct A(u8);`
			`struct B { d: u8 }`
			`let (a, );`
			`let [b, ];`
			`let A(c);`
			`let B { d };`
			`let _: (u8, u8, u8, u8) = (a, b, c, d);`
			//~^ ERROR used binding `a`
			//~\| ERROR used binding `b`
			//~\| ERROR used binding `c`
			//~\| ERROR used binding `d`
new liveness pass to supercede last_use / initedness 2012-05-19 05:52:01 -07:00			`}`