// comments exctracted from `readelf -sW <bin>`
// in ALL CASES, it is required to use the symbol to keep it in the resulting binary

// FOO, FOO2, and foo3 are fairly expected
pub static FOO: u32 = 1; // OBJECT LOCAL DEFAULT mangled name
static FOO2: u32 = 2; // OBJECT LOCAL DEFAULT mangled name
pub fn foo3() {} // FUNC LOCAL DEFAULT mangled name

// declaring `extern "C"` **only** declares an ABI, the symbol is still mangled
pub extern "C" fn foo4() {} // FUNC LOCAL DEFAULT mangled name

// #[no_mangle] causes symbols to be GLOBAL regardless of visibility or `extern` (unexpected) and not mangled (expected)
#[no_mangle]
fn foo5() {} // FUNC GLOBAL DEFAULT foo5

#[no_mangle]
pub fn foo6() {} // FUNC GLOBAL DEFAULT foo6

#[no_mangle]
extern "C" fn foo7() {} // FUNC GLOBAL DEFAULT foo7

#[no_mangle]
pub extern "C" fn foo8() {} // FUNC GLOBAL DEFAULT foo8

fn main() {
    println!("Foo: {}", FOO); // required to keep FOO's symbol
    println!("Foo2: {}", FOO2); // required to keep FOO2's symbol
    foo3(); // required to keep foo3's symbol
    foo4(); // required to keep foo4's symbol
    foo5(); // required to keep foo5's symbol
    foo6(); // required to keep foo6's symbol
    foo7(); // required to keep foo7's symbol
    foo8(); // required to keep foo8's symbol
}