[rustc.git] / src / test / ui / ptr_ops / issue-80309-safe.rs

// run-pass
// min-llvm-version: 13.0
// compile-flags: -O

// Regression test for issue #80309

pub fn zero(x: usize) -> usize {
    std::ptr::null::<i8>().wrapping_add(x) as usize - x
}
pub fn qux(x: &[i8]) -> i8 {
    x[zero(x.as_ptr() as usize)]
}

fn main() {
    let z = vec![42, 43];
    println!("{}", qux(&z));
}
Commit	Line	Data
5099ac24 FG	1	// run-pass
5099ac24 FG	2	// min-llvm-version: 13.0
04454e1e	3	// compile-flags: -O
5099ac24 FG	4
	5	// Regression test for issue #80309
	6
	7	pub fn zero(x: usize) -> usize {
	8	std::ptr::null::<i8>().wrapping_add(x) as usize - x
	9	}
	10	pub fn qux(x: &[i8]) -> i8 {
	11	x[zero(x.as_ptr() as usize)]
	12	}
	13
	14	fn main() {
	15	let z = vec![42, 43];
	16	println!("{}", qux(&z));
	17	}