[rustc.git] / src / test / run-make / coverage / issue-93054.rs

// Regression test for #93054: Functions using uninhabited types often only have a single,
// unreachable basic block which doesn't get instrumented. This should not cause llvm-cov to fail.
// Since these kinds functions can't be invoked anyway, it's ok to not have coverage data for them.

// compile-flags: --edition=2021

enum Never { }

impl Never {
    fn foo(self) {
        match self { }
        make().map(|never| match never { });
    }

    fn bar(&self) {
        match *self { }
    }
}

async fn foo2(never: Never) {
    match never { }
}

fn make() -> Option<Never> {
    None
}

fn main() { }
Commit	Line	Data
5099ac24 FG	1	// Regression test for #93054: Functions using uninhabited types often only have a single,
	2	// unreachable basic block which doesn't get instrumented. This should not cause llvm-cov to fail.
	3	// Since these kinds functions can't be invoked anyway, it's ok to not have coverage data for them.
	4
	5	// compile-flags: --edition=2021
	6
	7	enum Never { }
	8
	9	impl Never {
	10	fn foo(self) {
	11	match self { }
	12	make().map(\|never\| match never { });
	13	}
	14
	15	fn bar(&self) {
	16	match *self { }
	17	}
	18	}
	19
	20	async fn foo2(never: Never) {
	21	match never { }
	22	}
	23
	24	fn make() -> Option<Never> {
	25	None
	26	}
	27
	28	fn main() { }