rust/tests/ui/const-generics/bad-const-generic-exprs.rs

47 lines
2.1 KiB
Rust

struct Wow<const N: usize>;
fn main() {
let _: Wow<if true {}>;
//~^ ERROR invalid const generic expression
//~| HELP expressions must be enclosed in braces to be used as const generic arguments
let _: Wow<|| ()>;
//~^ ERROR invalid const generic expression
//~| HELP expressions must be enclosed in braces to be used as const generic arguments
let _: Wow<A.b>;
//~^ ERROR expected one of
//~| HELP expressions must be enclosed in braces to be used as const generic arguments
let _: Wow<A.0>;
//~^ ERROR expected one of
//~| HELP expressions must be enclosed in braces to be used as const generic arguments
let _: Wow<[]>;
//~^ ERROR expected type
//~| HELP expressions must be enclosed in braces to be used as const generic arguments
let _: Wow<[12]>;
//~^ ERROR expected type
//~| ERROR invalid const generic expression
//~| HELP expressions must be enclosed in braces to be used as const generic arguments
let _: Wow<[0, 1, 3]>;
//~^ ERROR expected type
//~| HELP expressions must be enclosed in braces to be used as const generic arguments
let _: Wow<[0xff; 8]>;
//~^ ERROR expected type
//~| ERROR invalid const generic expression
//~| HELP expressions must be enclosed in braces to be used as const generic arguments
let _: Wow<[1, 2]>; // Regression test for issue #81698.
//~^ ERROR expected type
//~| HELP expressions must be enclosed in braces to be used as const generic arguments
let _: Wow<&0>;
//~^ ERROR expected type
//~| HELP expressions must be enclosed in braces to be used as const generic arguments
let _: Wow<("", 0)>;
//~^ ERROR expected type
//~| HELP expressions must be enclosed in braces to be used as const generic arguments
let _: Wow<(1 + 2) * 3>;
//~^ ERROR expected type
//~| HELP expressions must be enclosed in braces to be used as const generic arguments
// FIXME(fmease): This one is pretty bad.
let _: Wow<!0>;
//~^ ERROR expected one of
//~| HELP you might have meant to end the type parameters here
}