tests/ui/lint/force-warn/deny-by-default-lint.rs


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// --force-warn $LINT causes $LINT (which is deny-by-default) to warn
// compile-flags: --force-warn mutable_transmutes
// check-pass

fn main() {
    unsafe {
        let y = std::mem::transmute::<&i32, &mut i32>(&5); //~WARN: undefined behavior
    }
}