rust/tests/ui/precondition-checks/unchecked_sub.rs

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2024-10-07 18:34:25 -05:00
//@ run-fail
//@ compile-flags: -Copt-level=3 -Cdebug-assertions=no -Zub-checks=yes
//@ error-pattern: unsafe precondition(s) violated: u8::unchecked_sub cannot overflow
fn main() {
unsafe {
0u8.unchecked_sub(1u8);
}
}