mirror of https://github.com/rust-lang/rust
56 lines
1.1 KiB
Rust
56 lines
1.1 KiB
Rust
//@ run-pass
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const extern "C" fn foo1(val: u8) -> u8 {
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val + 1
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}
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const extern "C" fn foo2(val: u8) -> u8 {
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val + 1
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}
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const unsafe extern "C" fn bar1(val: bool) -> bool {
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!val
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}
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const unsafe extern "C" fn bar2(val: bool) -> bool {
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!val
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}
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#[allow(improper_ctypes_definitions)]
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const extern "C" fn unsize(x: &[u8; 3]) -> &[u8] {
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x
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}
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#[allow(improper_ctypes_definitions)]
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const unsafe extern "C" fn closure() -> fn() {
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|| {}
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}
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const unsafe extern "C" fn use_float() -> f32 {
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1.0 + 1.0
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}
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fn main() {
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let a: [u8; foo1(25) as usize] = [0; 26];
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let b: [u8; foo2(25) as usize] = [0; 26];
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assert_eq!(a, b);
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let bar1_res = unsafe { bar1(false) };
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let bar2_res = unsafe { bar2(false) };
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assert!(bar1_res);
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assert_eq!(bar1_res, bar2_res);
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let _foo1_cast: extern "C" fn(u8) -> u8 = foo1;
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let _foo2_cast: extern "C" fn(u8) -> u8 = foo2;
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let _bar1_cast: unsafe extern "C" fn(bool) -> bool = bar1;
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let _bar2_cast: unsafe extern "C" fn(bool) -> bool = bar2;
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unsize(&[0, 1, 2]);
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unsafe {
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closure();
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}
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unsafe {
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use_float();
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}
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}
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