rust/tests/ui/for-loop-while/for-loop-has-unit-body.rs

// run-pass
fn main() {
    // Check that the tail statement in the body unifies with something
    for _ in 0..3 {
        // `()` is fine to zero-initialize as it is zero sized and inhabited.
        unsafe { std::mem::zeroed() }
    }

    // Check that the tail statement in the body can be unit
    for _ in 0..3 {
        ()
    }
}
Add `// run-pass` annotations to all the tests under `ui/run-pass/`. (I may have accidentally added it to some auxilliary crates as well; my emacs-macro-based methodology was pretty crude.) 2018-08-30 12:18:55 +00:00			`// run-pass`
Change for-loop desugar to not borrow the iterator during the loop 2017-05-27 18:20:17 +00:00			`fn main() {`
			`// Check that the tail statement in the body unifies with something`
			`for _ in 0..3 {`
Remove mem::uninitalized from tests This purges uses of uninitialized where possible from test cases. Some are merely moved over to the equally bad pattern of MaybeUninit::uninit().assume_init() but with an annotation that this is "the best we can do". 2019-12-22 02:43:13 +00:00			// `()` is fine to zero-initialize as it is zero sized and inhabited.
			`unsafe { std::mem::zeroed() }`
Change for-loop desugar to not borrow the iterator during the loop 2017-05-27 18:20:17 +00:00			`}`

			`// Check that the tail statement in the body can be unit`
			`for _ in 0..3 {`
			`()`
			`}`
			`}`