1 #![feature(const_generics)]
2 //~^ WARN the feature `const_generics` is incomplete
4 struct Checked<const F: fn(usize) -> bool>;
5 //~^ ERROR: using function pointers as const generic parameters
7 fn not_one(val: usize) -> bool { val != 1 }
8 fn not_two(val: usize) -> bool { val != 2 }
10 fn generic_arg<T>(val: T) -> bool { true }
12 fn generic<T>(val: usize) -> bool { val != 1 }
15 let _: Option<Checked<not_one>> = None;
16 let _: Checked<not_one> = Checked::<not_one>;
17 let _: Checked<not_one> = Checked::<not_two>;
19 let _ = Checked::<generic_arg>;
20 let _ = Checked::<{generic_arg::<usize>}>;
21 let _ = Checked::<{generic_arg::<u32>}>;
23 let _ = Checked::<generic>;
24 let _ = Checked::<{generic::<u16>}>;
25 let _: Checked<{generic::<u16>}> = Checked::<{generic::<u16>}>;
26 let _: Checked<{generic::<u32>}> = Checked::<{generic::<u16>}>;