830 lines
16 KiB
Rust
830 lines
16 KiB
Rust
#![feature(no_core, lang_items, never_type, linkage, extern_types, thread_local, repr_simd)]
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#![no_core]
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#![allow(dead_code, non_camel_case_types)]
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extern crate mini_core;
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use mini_core::libc::*;
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use mini_core::*;
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macro_rules! assert {
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($e:expr) => {
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if !$e {
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panic(stringify!(!$e));
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}
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};
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}
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macro_rules! assert_eq {
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($l:expr, $r: expr) => {
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if $l != $r {
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panic(stringify!($l != $r));
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}
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};
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}
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#[lang = "termination"]
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trait Termination {
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fn report(self) -> i32;
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}
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impl Termination for () {
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fn report(self) -> i32 {
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unsafe {
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NUM = 6 * 7 + 1 + (1u8 == 1u8) as u8; // 44
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assert_eq!(*NUM_REF as i32, 44);
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}
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0
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}
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}
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trait SomeTrait {
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fn object_safe(&self);
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}
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impl SomeTrait for &'static str {
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fn object_safe(&self) {
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unsafe {
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puts(*self as *const str as *const i8);
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}
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}
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}
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struct NoisyDrop {
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text: &'static str,
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inner: NoisyDropInner,
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}
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struct NoisyDropUnsized {
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inner: NoisyDropInner,
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text: str,
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}
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struct NoisyDropInner;
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impl Drop for NoisyDrop {
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fn drop(&mut self) {
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unsafe {
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puts(self.text as *const str as *const i8);
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}
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}
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}
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impl Drop for NoisyDropInner {
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fn drop(&mut self) {
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unsafe {
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puts("Inner got dropped!\0" as *const str as *const i8);
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}
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}
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}
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impl SomeTrait for NoisyDrop {
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fn object_safe(&self) {}
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}
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enum Ordering {
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Less = -1,
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Equal = 0,
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Greater = 1,
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}
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#[lang = "start"]
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fn start<T: Termination + 'static>(
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main: fn() -> T,
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argc: isize,
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argv: *const *const u8,
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_sigpipe: u8,
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) -> isize {
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if argc == 3 {
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unsafe {
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puts(*argv as *const i8);
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}
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unsafe {
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puts(*((argv as usize + intrinsics::size_of::<*const u8>()) as *const *const i8));
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}
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unsafe {
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puts(*((argv as usize + 2 * intrinsics::size_of::<*const u8>()) as *const *const i8));
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}
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}
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main().report() as isize
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}
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static mut NUM: u8 = 6 * 7;
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static NUM_REF: &'static u8 = unsafe { &NUM };
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unsafe fn zeroed<T>() -> T {
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let mut uninit = MaybeUninit { uninit: () };
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intrinsics::write_bytes(&mut uninit.value.value as *mut T, 0, 1);
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uninit.value.value
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}
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fn take_f32(_f: f32) {}
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fn take_unique(_u: Unique<()>) {}
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fn return_u128_pair() -> (u128, u128) {
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(0, 0)
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}
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fn call_return_u128_pair() {
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return_u128_pair();
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}
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#[repr(C)]
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pub struct bool_11 {
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field0: bool,
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field1: bool,
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field2: bool,
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field3: bool,
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field4: bool,
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field5: bool,
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field6: bool,
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field7: bool,
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field8: bool,
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field9: bool,
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field10: bool,
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}
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extern "C" fn bool_struct_in_11(_arg0: bool_11) {}
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#[allow(unreachable_code)] // FIXME false positive
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fn main() {
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take_unique(Unique { pointer: unsafe { NonNull(1 as *mut ()) }, _marker: PhantomData });
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take_f32(0.1);
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call_return_u128_pair();
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bool_struct_in_11(bool_11 {
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field0: true,
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field1: true,
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field2: true,
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field3: true,
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field4: true,
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field5: true,
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field6: true,
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field7: true,
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field8: true,
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field9: true,
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field10: true,
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});
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let slice = &[0, 1] as &[i32];
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let slice_ptr = slice as *const [i32] as *const i32;
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assert_eq!(slice_ptr as usize % 4, 0);
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unsafe {
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printf("Hello %s\n\0" as *const str as *const i8, "printf\0" as *const str as *const i8);
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let hello: &[u8] = b"Hello\0" as &[u8; 6];
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let ptr: *const i8 = hello as *const [u8] as *const i8;
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puts(ptr);
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let world: Box<&str> = Box::new("World!\0");
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puts(*world as *const str as *const i8);
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world as Box<dyn SomeTrait>;
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assert_eq!(intrinsics::bitreverse(0b10101000u8), 0b00010101u8);
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assert_eq!(intrinsics::bswap(0xabu8), 0xabu8);
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assert_eq!(intrinsics::bswap(0xddccu16), 0xccddu16);
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assert_eq!(intrinsics::bswap(0xffee_ddccu32), 0xccdd_eeffu32);
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assert_eq!(intrinsics::bswap(0x1234_5678_ffee_ddccu64), 0xccdd_eeff_7856_3412u64);
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assert_eq!(intrinsics::size_of_val(hello) as u8, 6);
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let chars = &['C', 'h', 'a', 'r', 's'];
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let chars = chars as &[char];
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assert_eq!(intrinsics::size_of_val(chars) as u8, 4 * 5);
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let a: &dyn SomeTrait = &"abc\0";
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a.object_safe();
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assert_eq!(intrinsics::size_of_val(a) as u8, 16);
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assert_eq!(intrinsics::size_of_val(&0u32) as u8, 4);
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assert_eq!(intrinsics::min_align_of::<u16>() as u8, 2);
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assert_eq!(
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intrinsics::min_align_of_val(&a) as u8,
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intrinsics::min_align_of::<&str>() as u8
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);
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assert!(!intrinsics::needs_drop::<u8>());
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assert!(!intrinsics::needs_drop::<[u8]>());
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assert!(intrinsics::needs_drop::<NoisyDrop>());
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assert!(intrinsics::needs_drop::<NoisyDropUnsized>());
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Unique { pointer: NonNull(1 as *mut &str), _marker: PhantomData } as Unique<dyn SomeTrait>;
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struct MyDst<T: ?Sized>(T);
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intrinsics::size_of_val(&MyDst([0u8; 4]) as &MyDst<[u8]>);
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struct Foo {
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x: u8,
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y: !,
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}
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unsafe fn uninitialized<T>() -> T {
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MaybeUninit { uninit: () }.value.value
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}
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zeroed::<(u8, u8)>();
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#[allow(unreachable_code)]
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{
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if false {
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zeroed::<!>();
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zeroed::<Foo>();
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uninitialized::<Foo>();
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}
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}
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}
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let _ = Box::new(NoisyDrop { text: "Boxed outer got dropped!\0", inner: NoisyDropInner })
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as Box<dyn SomeTrait>;
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const FUNC_REF: Option<fn()> = Some(main);
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match FUNC_REF {
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Some(_) => {}
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None => assert!(false),
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}
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match Ordering::Less {
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Ordering::Less => {}
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_ => assert!(false),
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}
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[NoisyDropInner, NoisyDropInner];
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let x = &[0u32, 42u32] as &[u32];
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match x {
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[] => assert_eq!(0u32, 1),
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[_, ref y @ ..] => assert_eq!(&x[1] as *const u32 as usize, &y[0] as *const u32 as usize),
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}
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assert_eq!(((|()| 42u8) as fn(()) -> u8)(()), 42);
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#[cfg(not(any(jit, windows)))]
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{
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extern "C" {
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#[linkage = "extern_weak"]
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static ABC: *const u8;
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}
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{
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extern "C" {
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#[linkage = "extern_weak"]
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static ABC: *const u8;
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}
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}
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unsafe {
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assert_eq!(ABC as usize, 0);
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}
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}
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&mut (|| Some(0 as *const ())) as &mut dyn FnMut() -> Option<*const ()>;
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let f = 1000.0;
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assert_eq!(f as u8, 255);
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let f2 = -1000.0;
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assert_eq!(f2 as i8, -128);
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assert_eq!(f2 as u8, 0);
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let amount = 0;
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assert_eq!(1u128 << amount, 1);
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static ANOTHER_STATIC: &u8 = &A_STATIC;
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assert_eq!(*ANOTHER_STATIC, 42);
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check_niche_behavior();
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extern "C" {
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type ExternType;
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}
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struct ExternTypeWrapper {
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_a: ExternType,
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}
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let nullptr = 0 as *const ();
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let extern_nullptr = nullptr as *const ExternTypeWrapper;
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extern_nullptr as *const ();
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let slice_ptr = &[] as *const [u8];
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slice_ptr as *const u8;
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let repeat = [Some(42); 2];
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assert_eq!(repeat[0], Some(42));
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assert_eq!(repeat[1], Some(42));
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from_decimal_string();
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#[cfg(all(not(jit), not(all(windows, target_env = "gnu"))))]
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test_tls();
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#[cfg(all(
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not(jit),
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not(no_unstable_features),
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target_arch = "x86_64",
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any(target_os = "linux", target_os = "macos")
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))]
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unsafe {
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global_asm_test();
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}
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// Both statics have a reference that points to the same anonymous allocation.
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static REF1: &u8 = &42;
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static REF2: &u8 = REF1;
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assert_eq!(*REF1, *REF2);
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extern "C" {
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type A;
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}
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fn main() {
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let x: &A = unsafe { &*(1usize as *const A) };
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assert_eq!(unsafe { intrinsics::size_of_val(x) }, 0);
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assert_eq!(unsafe { intrinsics::min_align_of_val(x) }, 1);
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}
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#[repr(simd)]
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struct V([f64; 2]);
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let f = V([0.0, 1.0]);
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let _a = f.0[0];
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}
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#[cfg(all(
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not(jit),
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not(no_unstable_features),
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target_arch = "x86_64",
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any(target_os = "linux", target_os = "macos")
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))]
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extern "C" {
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fn global_asm_test();
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}
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#[cfg(all(not(jit), not(no_unstable_features), target_arch = "x86_64", target_os = "linux"))]
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global_asm! {
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"
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.global global_asm_test
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global_asm_test:
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// comment that would normally be removed by LLVM
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ret
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"
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}
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#[cfg(all(not(jit), not(no_unstable_features), target_arch = "x86_64", target_os = "macos"))]
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global_asm! {
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"
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.global _global_asm_test
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_global_asm_test:
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// comment that would normally be removed by LLVM
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ret
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"
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}
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#[repr(C)]
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enum c_void {
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_1,
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_2,
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}
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type c_int = i32;
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type c_ulong = u64;
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type pthread_t = c_ulong;
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#[repr(C)]
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struct pthread_attr_t {
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__size: [u64; 7],
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}
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#[link(name = "pthread")]
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#[cfg(unix)]
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extern "C" {
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fn pthread_attr_init(attr: *mut pthread_attr_t) -> c_int;
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fn pthread_create(
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native: *mut pthread_t,
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attr: *const pthread_attr_t,
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f: extern "C" fn(_: *mut c_void) -> *mut c_void,
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value: *mut c_void,
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) -> c_int;
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fn pthread_join(native: pthread_t, value: *mut *mut c_void) -> c_int;
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}
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type DWORD = u32;
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type LPDWORD = *mut u32;
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type LPVOID = *mut c_void;
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type HANDLE = *mut c_void;
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#[link(name = "msvcrt")]
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#[cfg(windows)]
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extern "C" {
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fn WaitForSingleObject(hHandle: LPVOID, dwMilliseconds: DWORD) -> DWORD;
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fn CreateThread(
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lpThreadAttributes: LPVOID, // Technically LPSECURITY_ATTRIBUTES, but we don't use it anyway
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dwStackSize: usize,
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lpStartAddress: extern "C" fn(_: *mut c_void) -> *mut c_void,
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lpParameter: LPVOID,
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dwCreationFlags: DWORD,
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lpThreadId: LPDWORD,
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) -> HANDLE;
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}
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struct Thread {
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#[cfg(windows)]
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handle: HANDLE,
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#[cfg(unix)]
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handle: pthread_t,
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}
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impl Thread {
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unsafe fn create(f: extern "C" fn(_: *mut c_void) -> *mut c_void) -> Self {
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#[cfg(unix)]
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{
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let mut attr: pthread_attr_t = zeroed();
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let mut thread: pthread_t = 0;
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if pthread_attr_init(&mut attr) != 0 {
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assert!(false);
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}
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if pthread_create(&mut thread, &attr, f, 0 as *mut c_void) != 0 {
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assert!(false);
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}
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Thread { handle: thread }
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}
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#[cfg(windows)]
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{
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let handle = CreateThread(0 as *mut c_void, 0, f, 0 as *mut c_void, 0, 0 as *mut u32);
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if (handle as u64) == 0 {
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assert!(false);
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}
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Thread { handle }
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}
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}
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unsafe fn join(self) {
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#[cfg(unix)]
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{
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let mut res = 0 as *mut c_void;
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pthread_join(self.handle, &mut res);
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}
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#[cfg(windows)]
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{
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// The INFINITE macro is used to signal operations that do not timeout.
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let infinite = 0xffffffff;
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assert!(WaitForSingleObject(self.handle, infinite) == 0);
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}
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}
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}
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#[thread_local]
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#[cfg(not(jit))]
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static mut TLS: u8 = 42;
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#[cfg(not(jit))]
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extern "C" fn mutate_tls(_: *mut c_void) -> *mut c_void {
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unsafe {
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TLS = 0;
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}
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0 as *mut c_void
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}
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#[cfg(not(jit))]
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fn test_tls() {
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unsafe {
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assert_eq!(TLS, 42);
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let thread = Thread::create(mutate_tls);
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thread.join();
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// TLS of main thread must not have been changed by the other thread.
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assert_eq!(TLS, 42);
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puts("TLS works!\n\0" as *const str as *const i8);
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}
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}
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// Copied ui/issues/issue-61696.rs
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pub enum Infallible {}
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// The check that the `bool` field of `V1` is encoding a "niche variant"
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// (i.e. not `V1`, so `V3` or `V4`) used to be mathematically incorrect,
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// causing valid `V1` values to be interpreted as other variants.
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pub enum E1 {
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V1 { f: bool },
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V2 { f: Infallible },
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V3,
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V4,
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}
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// Computing the discriminant used to be done using the niche type (here `u8`,
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// from the `bool` field of `V1`), overflowing for variants with large enough
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// indices (`V3` and `V4`), causing them to be interpreted as other variants.
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#[rustfmt::skip]
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pub enum E2<X> {
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V1 { f: bool },
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/*_00*/ _01(X),
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_02(X),
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_03(X),
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_04(X),
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_05(X),
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_06(X),
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_07(X),
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_08(X),
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_09(X),
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_0A(X),
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_0B(X),
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_0C(X),
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_0D(X),
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_0E(X),
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_0F(X),
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_10(X),
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_11(X),
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_12(X),
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_13(X),
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_14(X),
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_15(X),
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_16(X),
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_17(X),
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_18(X),
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_19(X),
|
|
_1A(X),
|
|
_1B(X),
|
|
_1C(X),
|
|
_1D(X),
|
|
_1E(X),
|
|
_1F(X),
|
|
_20(X),
|
|
_21(X),
|
|
_22(X),
|
|
_23(X),
|
|
_24(X),
|
|
_25(X),
|
|
_26(X),
|
|
_27(X),
|
|
_28(X),
|
|
_29(X),
|
|
_2A(X),
|
|
_2B(X),
|
|
_2C(X),
|
|
_2D(X),
|
|
_2E(X),
|
|
_2F(X),
|
|
_30(X),
|
|
_31(X),
|
|
_32(X),
|
|
_33(X),
|
|
_34(X),
|
|
_35(X),
|
|
_36(X),
|
|
_37(X),
|
|
_38(X),
|
|
_39(X),
|
|
_3A(X),
|
|
_3B(X),
|
|
_3C(X),
|
|
_3D(X),
|
|
_3E(X),
|
|
_3F(X),
|
|
_40(X),
|
|
_41(X),
|
|
_42(X),
|
|
_43(X),
|
|
_44(X),
|
|
_45(X),
|
|
_46(X),
|
|
_47(X),
|
|
_48(X),
|
|
_49(X),
|
|
_4A(X),
|
|
_4B(X),
|
|
_4C(X),
|
|
_4D(X),
|
|
_4E(X),
|
|
_4F(X),
|
|
_50(X),
|
|
_51(X),
|
|
_52(X),
|
|
_53(X),
|
|
_54(X),
|
|
_55(X),
|
|
_56(X),
|
|
_57(X),
|
|
_58(X),
|
|
_59(X),
|
|
_5A(X),
|
|
_5B(X),
|
|
_5C(X),
|
|
_5D(X),
|
|
_5E(X),
|
|
_5F(X),
|
|
_60(X),
|
|
_61(X),
|
|
_62(X),
|
|
_63(X),
|
|
_64(X),
|
|
_65(X),
|
|
_66(X),
|
|
_67(X),
|
|
_68(X),
|
|
_69(X),
|
|
_6A(X),
|
|
_6B(X),
|
|
_6C(X),
|
|
_6D(X),
|
|
_6E(X),
|
|
_6F(X),
|
|
_70(X),
|
|
_71(X),
|
|
_72(X),
|
|
_73(X),
|
|
_74(X),
|
|
_75(X),
|
|
_76(X),
|
|
_77(X),
|
|
_78(X),
|
|
_79(X),
|
|
_7A(X),
|
|
_7B(X),
|
|
_7C(X),
|
|
_7D(X),
|
|
_7E(X),
|
|
_7F(X),
|
|
_80(X),
|
|
_81(X),
|
|
_82(X),
|
|
_83(X),
|
|
_84(X),
|
|
_85(X),
|
|
_86(X),
|
|
_87(X),
|
|
_88(X),
|
|
_89(X),
|
|
_8A(X),
|
|
_8B(X),
|
|
_8C(X),
|
|
_8D(X),
|
|
_8E(X),
|
|
_8F(X),
|
|
_90(X),
|
|
_91(X),
|
|
_92(X),
|
|
_93(X),
|
|
_94(X),
|
|
_95(X),
|
|
_96(X),
|
|
_97(X),
|
|
_98(X),
|
|
_99(X),
|
|
_9A(X),
|
|
_9B(X),
|
|
_9C(X),
|
|
_9D(X),
|
|
_9E(X),
|
|
_9F(X),
|
|
_A0(X),
|
|
_A1(X),
|
|
_A2(X),
|
|
_A3(X),
|
|
_A4(X),
|
|
_A5(X),
|
|
_A6(X),
|
|
_A7(X),
|
|
_A8(X),
|
|
_A9(X),
|
|
_AA(X),
|
|
_AB(X),
|
|
_AC(X),
|
|
_AD(X),
|
|
_AE(X),
|
|
_AF(X),
|
|
_B0(X),
|
|
_B1(X),
|
|
_B2(X),
|
|
_B3(X),
|
|
_B4(X),
|
|
_B5(X),
|
|
_B6(X),
|
|
_B7(X),
|
|
_B8(X),
|
|
_B9(X),
|
|
_BA(X),
|
|
_BB(X),
|
|
_BC(X),
|
|
_BD(X),
|
|
_BE(X),
|
|
_BF(X),
|
|
_C0(X),
|
|
_C1(X),
|
|
_C2(X),
|
|
_C3(X),
|
|
_C4(X),
|
|
_C5(X),
|
|
_C6(X),
|
|
_C7(X),
|
|
_C8(X),
|
|
_C9(X),
|
|
_CA(X),
|
|
_CB(X),
|
|
_CC(X),
|
|
_CD(X),
|
|
_CE(X),
|
|
_CF(X),
|
|
_D0(X),
|
|
_D1(X),
|
|
_D2(X),
|
|
_D3(X),
|
|
_D4(X),
|
|
_D5(X),
|
|
_D6(X),
|
|
_D7(X),
|
|
_D8(X),
|
|
_D9(X),
|
|
_DA(X),
|
|
_DB(X),
|
|
_DC(X),
|
|
_DD(X),
|
|
_DE(X),
|
|
_DF(X),
|
|
_E0(X),
|
|
_E1(X),
|
|
_E2(X),
|
|
_E3(X),
|
|
_E4(X),
|
|
_E5(X),
|
|
_E6(X),
|
|
_E7(X),
|
|
_E8(X),
|
|
_E9(X),
|
|
_EA(X),
|
|
_EB(X),
|
|
_EC(X),
|
|
_ED(X),
|
|
_EE(X),
|
|
_EF(X),
|
|
_F0(X),
|
|
_F1(X),
|
|
_F2(X),
|
|
_F3(X),
|
|
_F4(X),
|
|
_F5(X),
|
|
_F6(X),
|
|
_F7(X),
|
|
_F8(X),
|
|
_F9(X),
|
|
_FA(X),
|
|
_FB(X),
|
|
_FC(X),
|
|
_FD(X),
|
|
_FE(X),
|
|
_FF(X),
|
|
|
|
V3,
|
|
V4,
|
|
}
|
|
|
|
fn check_niche_behavior() {
|
|
if let E1::V2 { .. } = (E1::V1 { f: true }) {
|
|
intrinsics::abort();
|
|
}
|
|
|
|
if let E2::V1 { .. } = E2::V3::<Infallible> {
|
|
intrinsics::abort();
|
|
}
|
|
}
|
|
|
|
fn from_decimal_string() {
|
|
loop {
|
|
let multiplier = 1;
|
|
|
|
take_multiplier_ref(&multiplier);
|
|
|
|
if multiplier == 1 {
|
|
break;
|
|
}
|
|
|
|
unreachable();
|
|
}
|
|
}
|
|
|
|
fn take_multiplier_ref(_multiplier: &u128) {}
|
|
|
|
fn unreachable() -> ! {
|
|
panic("unreachable")
|
|
}
|