struct T1<const X1: usize>; struct T2<const X1: usize, const X2: usize>; struct T3<const X1: usize, const X2: usize, const X3: usize>; impl T1<1> { const C: () = (); } impl T2<1, 2> { const C: () = (); } impl T3<1, 2, 3> { const C: () = (); } fn main() { T1<1>::C; //~ ERROR: comparison operators cannot be chained T2<1, 2>::C; //~ ERROR: expected one of `.`, `;`, `?`, `}`, or an operator, found `,` T3<1, 2, 3>::C; //~ ERROR: expected one of `.`, `;`, `?`, `}`, or an operator, found `,` }