tests/ui/typeck/issue-88643.rs

// Regression test for the ICE described in #88643. Specifically:
// https://github.com/rust-lang/rust/issues/88643#issuecomment-913128893
// and https://github.com/rust-lang/rust/issues/88643#issuecomment-913171935
// and https://github.com/rust-lang/rust/issues/88643#issuecomment-913765984

use std::collections::HashMap;

pub trait T {}

static CALLBACKS: HashMap<*const dyn T, dyn FnMut(&mut _) + 'static> = HashMap::new();
//~^ ERROR: the placeholder `_` is not allowed within types on item signatures for statics [E0121]

static CALLBACKS2: Vec<dyn Fn(& _)> = Vec::new();
//~^ ERROR: the placeholder `_` is not allowed within types on item signatures for statics [E0121]

static CALLBACKS3: Option<dyn Fn(& _)> = None;
//~^ ERROR: the placeholder `_` is not allowed within types on item signatures for statics [E0121]

fn main() {}