const FOO: Option<&[[u8; 3]]> = Some(&[*b"foo"]); //~ ERROR temporary value dropped while borrowed use std::borrow::Cow; pub const X: [u8; 3] = *b"ABC"; pub const Y: Cow<'static, [ [u8; 3] ]> = Cow::Borrowed(&[X]); pub const Z: Cow<'static, [ [u8; 3] ]> = Cow::Borrowed(&[*b"ABC"]); //~^ ERROR temporary value dropped while borrowed fn main() {}