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//@ compile-flags: -Znext-solver
fn require_fn(_: impl Fn() -> i32) {}
fn f() -> i32 {
1i32
}
extern "C" fn g() -> i32 {
2i32
}
unsafe fn h() -> i32 {
2i32
}
fn main() {
require_fn(f);
require_fn(f as fn() -> i32);
require_fn(f as unsafe fn() -> i32);
//~^ ERROR: expected a `Fn()` closure, found `unsafe fn() -> i32`
require_fn(g);
//~^ ERROR: expected a `Fn()` closure, found `extern "C" fn() -> i32 {g}`
require_fn(g as extern "C" fn() -> i32);
//~^ ERROR: expected a `Fn()` closure, found `extern "C" fn() -> i32`
require_fn(h);
//~^ ERROR: expected a `Fn()` closure, found `unsafe fn() -> i32 {h}`
}
|
