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

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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
// FIXME(compiler-errors): This one is still unsatisfying,
// and probably a case I could see someone typing by accident..
let _: Wow<[12]>;
//~^ ERROR expected type, found
//~| ERROR type provided when a constant was expected
}