rust/src/test/ui/refutable-pattern-errors.rs
Zack M. Davis d1cdb02e4d pretty-pretty extremal constants!
While many programmers may intuitively appreciate the significance of
"magic numbers" like −2147483648, Rust is about empowering everyone to
build reliable and efficient software! It's a bit more legible to
print the constant names (even noisy fully-qualified-paths thereof).

The bit-manipulation methods mirror those in
`librustc_mir::hair::pattern::_match::all_constructors`; thanks to the
immortal Varkor for guidance.

Resolves #56393.
2019-08-06 21:00:46 -07:00

7 lines
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Rust

fn func((1, (Some(1), 2..=3)): (isize, (Option<isize>, isize))) { }
//~^ ERROR refutable pattern in function argument: `(_, _)` not covered
fn main() {
let (1, (Some(1), 2..=3)) = (1, (None, 2));
//~^ ERROR refutable pattern in local binding: `(std::i32::MIN..=0i32, _)` not covered
}