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//@ check-pass
//@ run-rustfix
extern "C" {
fn test();
}
fn a() {}
extern "C" fn c() {}
extern "C" fn args(_a: i32) -> i32 { 0 }
#[derive(PartialEq, Eq)]
struct A {
f: fn(),
}
fn main() {
let f: fn() = a;
let g: fn() = f;
let a1 = A { f };
let a2 = A { f };
let _ = std::ptr::fn_addr_eq(f, a as fn());
//~^ WARN function pointer comparisons
let _ = !std::ptr::fn_addr_eq(f, a as fn());
//~^ WARN function pointer comparisons
let _ = std::ptr::fn_addr_eq(f, g);
//~^ WARN function pointer comparisons
let _ = std::ptr::fn_addr_eq(f, f);
//~^ WARN function pointer comparisons
let _ = std::ptr::fn_addr_eq(g, g);
//~^ WARN function pointer comparisons
let _ = std::ptr::fn_addr_eq(g, g);
//~^ WARN function pointer comparisons
let _ = std::ptr::fn_addr_eq(g, g);
//~^ WARN function pointer comparisons
let _ = std::ptr::fn_addr_eq(a as fn(), g);
//~^ WARN function pointer comparisons
let cfn: extern "C" fn() = c;
let _ = std::ptr::fn_addr_eq(cfn, c as extern "C" fn());
//~^ WARN function pointer comparisons
let argsfn: extern "C" fn(i32) -> i32 = args;
let _ = std::ptr::fn_addr_eq(argsfn, args as extern "C" fn(i32) -> i32);
//~^ WARN function pointer comparisons
let t: unsafe extern "C" fn() = test;
let _ = std::ptr::fn_addr_eq(t, test as unsafe extern "C" fn());
//~^ WARN function pointer comparisons
let _ = a1 == a2; // should not warn
let _ = std::ptr::fn_addr_eq(a1.f, a2.f);
//~^ WARN function pointer comparisons
}
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