rust/tests/ui/binding/match-reassign.rs
2023-01-11 09:32:08 +00:00

22 lines
557 B
Rust

// run-pass
// Regression test for #23698: The reassignment checker only cared
// about the last assignment in a match arm body
// Use an extra function to make sure no extra assignments
// are introduced by macros in the match statement
fn check_eq(x: i32, y: i32) {
assert_eq!(x, y);
}
#[allow(unused_assignments)]
fn main() {
let mut x = Box::new(1);
match x {
y => {
x = Box::new(2);
let _tmp = 1; // This assignment used to throw off the reassignment checker
check_eq(*y, 1);
}
}
}