src/test/ui/attributes/attrs-with-no-formal-in-generics-3.rs

// This test checks variations on `<#[attr] 'a, #[oops]>`, where
// `#[oops]` is left dangling (that is, it is unattached, with no
// formal binding following it).

struct RefIntPair<'a, 'b>(&'a u32, &'b u32);

fn hof_lt<Q>(_: Q)
    where Q: for <#[allow(unused)] 'a, 'b, #[oops]> Fn(RefIntPair<'a,'b>) -> &'b u32
    //~^ ERROR trailing attribute after generic parameter
{}

fn main() {}