[rustc.git] / compiler / rustc_codegen_cranelift / example / mini_core.rs

#![feature(
    no_core,
    lang_items,
    intrinsics,
    unboxed_closures,
    extern_types,
    decl_macro,
    rustc_attrs,
    transparent_unions,
    auto_traits,
    thread_local
)]
#![no_core]
#![allow(dead_code)]

#[lang = "sized"]
pub trait Sized {}

#[lang = "destruct"]
pub trait Destruct {}

#[lang = "tuple_trait"]
pub trait Tuple {}

#[lang = "unsize"]
pub trait Unsize<T: ?Sized> {}

#[lang = "coerce_unsized"]
pub trait CoerceUnsized<T> {}

impl<'a, 'b: 'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<&'a U> for &'b T {}
impl<'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<&'a mut U> for &'a mut T {}
impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<*const U> for *const T {}
impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<*mut U> for *mut T {}

#[lang = "dispatch_from_dyn"]
pub trait DispatchFromDyn<T> {}

// &T -> &U
impl<'a, T: ?Sized+Unsize<U>, U: ?Sized> DispatchFromDyn<&'a U> for &'a T {}
// &mut T -> &mut U
impl<'a, T: ?Sized+Unsize<U>, U: ?Sized> DispatchFromDyn<&'a mut U> for &'a mut T {}
// *const T -> *const U
impl<T: ?Sized+Unsize<U>, U: ?Sized> DispatchFromDyn<*const U> for *const T {}
// *mut T -> *mut U
impl<T: ?Sized+Unsize<U>, U: ?Sized> DispatchFromDyn<*mut U> for *mut T {}
impl<T: ?Sized + Unsize<U>, U: ?Sized> DispatchFromDyn<Box<U>> for Box<T> {}

#[lang = "receiver"]
pub trait Receiver {}

impl<T: ?Sized> Receiver for &T {}
impl<T: ?Sized> Receiver for &mut T {}
impl<T: ?Sized> Receiver for Box<T> {}

#[lang = "copy"]
pub unsafe trait Copy {}

unsafe impl Copy for bool {}
unsafe impl Copy for u8 {}
unsafe impl Copy for u16 {}
unsafe impl Copy for u32 {}
unsafe impl Copy for u64 {}
unsafe impl Copy for u128 {}
unsafe impl Copy for usize {}
unsafe impl Copy for i8 {}
unsafe impl Copy for i16 {}
unsafe impl Copy for i32 {}
unsafe impl Copy for isize {}
unsafe impl Copy for f32 {}
unsafe impl Copy for f64 {}
unsafe impl Copy for char {}
unsafe impl<'a, T: ?Sized> Copy for &'a T {}
unsafe impl<T: ?Sized> Copy for *const T {}
unsafe impl<T: ?Sized> Copy for *mut T {}
unsafe impl<T: Copy> Copy for Option<T> {}

#[lang = "sync"]
pub unsafe trait Sync {}

unsafe impl Sync for bool {}
unsafe impl Sync for u8 {}
unsafe impl Sync for u16 {}
unsafe impl Sync for u32 {}
unsafe impl Sync for u64 {}
unsafe impl Sync for usize {}
unsafe impl Sync for i8 {}
unsafe impl Sync for i16 {}
unsafe impl Sync for i32 {}
unsafe impl Sync for isize {}
unsafe impl Sync for char {}
unsafe impl<'a, T: ?Sized> Sync for &'a T {}
unsafe impl Sync for [u8; 16] {}

#[lang = "freeze"]
unsafe auto trait Freeze {}

unsafe impl<T: ?Sized> Freeze for PhantomData<T> {}
unsafe impl<T: ?Sized> Freeze for *const T {}
unsafe impl<T: ?Sized> Freeze for *mut T {}
unsafe impl<T: ?Sized> Freeze for &T {}
unsafe impl<T: ?Sized> Freeze for &mut T {}

#[lang = "structural_peq"]
pub trait StructuralPartialEq {}

#[lang = "structural_teq"]
pub trait StructuralEq {}

#[lang = "not"]
pub trait Not {
    type Output;

    fn not(self) -> Self::Output;
}

impl Not for bool {
    type Output = bool;

    fn not(self) -> bool {
        !self
    }
}

#[lang = "mul"]
pub trait Mul<RHS = Self> {
    type Output;

    #[must_use]
    fn mul(self, rhs: RHS) -> Self::Output;
}

impl Mul for u8 {
    type Output = Self;

    fn mul(self, rhs: Self) -> Self::Output {
        self * rhs
    }
}

impl Mul for usize {
    type Output = Self;

    fn mul(self, rhs: Self) -> Self::Output {
        self * rhs
    }
}

#[lang = "add"]
pub trait Add<RHS = Self> {
    type Output;

    fn add(self, rhs: RHS) -> Self::Output;
}

impl Add for u8 {
    type Output = Self;

    fn add(self, rhs: Self) -> Self {
        self + rhs
    }
}

impl Add for i8 {
    type Output = Self;

    fn add(self, rhs: Self) -> Self {
        self + rhs
    }
}

impl Add for usize {
    type Output = Self;

    fn add(self, rhs: Self) -> Self {
        self + rhs
    }
}

#[lang = "sub"]
pub trait Sub<RHS = Self> {
    type Output;

    fn sub(self, rhs: RHS) -> Self::Output;
}

impl Sub for usize {
    type Output = Self;

    fn sub(self, rhs: Self) -> Self {
        self - rhs
    }
}

impl Sub for u8 {
    type Output = Self;

    fn sub(self, rhs: Self) -> Self {
        self - rhs
    }
}

impl Sub for i8 {
    type Output = Self;

    fn sub(self, rhs: Self) -> Self {
        self - rhs
    }
}

impl Sub for i16 {
    type Output = Self;

    fn sub(self, rhs: Self) -> Self {
        self - rhs
    }
}

#[lang = "rem"]
pub trait Rem<RHS = Self> {
    type Output;

    fn rem(self, rhs: RHS) -> Self::Output;
}

impl Rem for usize {
    type Output = Self;

    fn rem(self, rhs: Self) -> Self {
        self % rhs
    }
}

#[lang = "bitor"]
pub trait BitOr<RHS = Self> {
    type Output;

    #[must_use]
    fn bitor(self, rhs: RHS) -> Self::Output;
}

impl BitOr for bool {
    type Output = bool;

    fn bitor(self, rhs: bool) -> bool {
        self | rhs
    }
}

impl<'a> BitOr<bool> for &'a bool {
    type Output = bool;

    fn bitor(self, rhs: bool) -> bool {
        *self | rhs
    }
}

#[lang = "eq"]
pub trait PartialEq<Rhs: ?Sized = Self> {
    fn eq(&self, other: &Rhs) -> bool;
    fn ne(&self, other: &Rhs) -> bool;
}

impl PartialEq for u8 {
    fn eq(&self, other: &u8) -> bool {
        (*self) == (*other)
    }
    fn ne(&self, other: &u8) -> bool {
        (*self) != (*other)
    }
}

impl PartialEq for u16 {
    fn eq(&self, other: &u16) -> bool {
        (*self) == (*other)
    }
    fn ne(&self, other: &u16) -> bool {
        (*self) != (*other)
    }
}

impl PartialEq for u32 {
    fn eq(&self, other: &u32) -> bool {
        (*self) == (*other)
    }
    fn ne(&self, other: &u32) -> bool {
        (*self) != (*other)
    }
}


impl PartialEq for u64 {
    fn eq(&self, other: &u64) -> bool {
        (*self) == (*other)
    }
    fn ne(&self, other: &u64) -> bool {
        (*self) != (*other)
    }
}

impl PartialEq for u128 {
    fn eq(&self, other: &u128) -> bool {
        (*self) == (*other)
    }
    fn ne(&self, other: &u128) -> bool {
        (*self) != (*other)
    }
}

impl PartialEq for usize {
    fn eq(&self, other: &usize) -> bool {
        (*self) == (*other)
    }
    fn ne(&self, other: &usize) -> bool {
        (*self) != (*other)
    }
}

impl PartialEq for i8 {
    fn eq(&self, other: &i8) -> bool {
        (*self) == (*other)
    }
    fn ne(&self, other: &i8) -> bool {
        (*self) != (*other)
    }
}

impl PartialEq for i32 {
    fn eq(&self, other: &i32) -> bool {
        (*self) == (*other)
    }
    fn ne(&self, other: &i32) -> bool {
        (*self) != (*other)
    }
}

impl PartialEq for isize {
    fn eq(&self, other: &isize) -> bool {
        (*self) == (*other)
    }
    fn ne(&self, other: &isize) -> bool {
        (*self) != (*other)
    }
}

impl PartialEq for char {
    fn eq(&self, other: &char) -> bool {
        (*self) == (*other)
    }
    fn ne(&self, other: &char) -> bool {
        (*self) != (*other)
    }
}

impl<T: ?Sized> PartialEq for *const T {
    fn eq(&self, other: &*const T) -> bool {
        *self == *other
    }
    fn ne(&self, other: &*const T) -> bool {
        *self != *other
    }
}

impl <T: PartialEq> PartialEq for Option<T> {
    fn eq(&self, other: &Self) -> bool {
        match (self, other) {
            (Some(lhs), Some(rhs)) => *lhs == *rhs,
            (None, None) => true,
            _ => false,
        }
    }

    fn ne(&self, other: &Self) -> bool {
        match (self, other) {
            (Some(lhs), Some(rhs)) => *lhs != *rhs,
            (None, None) => false,
            _ => true,
        }
    }
}

#[lang = "shl"]
pub trait Shl<RHS = Self> {
    type Output;

    #[must_use]
    fn shl(self, rhs: RHS) -> Self::Output;
}

impl Shl for u128 {
    type Output = u128;

    fn shl(self, rhs: u128) -> u128 {
        self << rhs
    }
}

#[lang = "neg"]
pub trait Neg {
    type Output;

    fn neg(self) -> Self::Output;
}

impl Neg for i8 {
    type Output = i8;

    fn neg(self) -> i8 {
        -self
    }
}

impl Neg for i16 {
    type Output = i16;

    fn neg(self) -> i16 {
        self
    }
}

impl Neg for isize {
    type Output = isize;

    fn neg(self) -> isize {
        -self
    }
}

impl Neg for f32 {
    type Output = f32;

    fn neg(self) -> f32 {
        -self
    }
}

pub enum Option<T> {
    Some(T),
    None,
}

pub use Option::*;

#[lang = "phantom_data"]
pub struct PhantomData<T: ?Sized>;

#[lang = "fn_once"]
#[rustc_paren_sugar]
pub trait FnOnce<Args: Tuple> {
    #[lang = "fn_once_output"]
    type Output;

    extern "rust-call" fn call_once(self, args: Args) -> Self::Output;
}

#[lang = "fn_mut"]
#[rustc_paren_sugar]
pub trait FnMut<Args: Tuple>: FnOnce<Args> {
    extern "rust-call" fn call_mut(&mut self, args: Args) -> Self::Output;
}

#[lang = "panic"]
#[track_caller]
pub fn panic(_msg: &'static str) -> ! {
    unsafe {
        libc::puts("Panicking\n\0" as *const str as *const i8);
        intrinsics::abort();
    }
}

#[lang = "panic_bounds_check"]
#[track_caller]
fn panic_bounds_check(index: usize, len: usize) -> ! {
    unsafe {
        libc::printf("index out of bounds: the len is %d but the index is %d\n\0" as *const str as *const i8, len, index);
        intrinsics::abort();
    }
}

#[lang = "eh_personality"]
fn eh_personality() -> ! {
    loop {}
}

#[lang = "drop_in_place"]
#[allow(unconditional_recursion)]
pub unsafe fn drop_in_place<T: ?Sized>(to_drop: *mut T) {
    // Code here does not matter - this is replaced by the
    // real drop glue by the compiler.
    drop_in_place(to_drop);
}

#[lang = "deref"]
pub trait Deref {
    type Target: ?Sized;

    fn deref(&self) -> &Self::Target;
}

#[repr(transparent)]
#[rustc_layout_scalar_valid_range_start(1)]
#[rustc_nonnull_optimization_guaranteed]
pub struct NonNull<T: ?Sized>(pub *const T);

impl<T: ?Sized, U: ?Sized> CoerceUnsized<NonNull<U>> for NonNull<T> where T: Unsize<U> {}
impl<T: ?Sized, U: ?Sized> DispatchFromDyn<NonNull<U>> for NonNull<T> where T: Unsize<U> {}

pub struct Unique<T: ?Sized> {
    pub pointer: NonNull<T>,
    pub _marker: PhantomData<T>,
}

impl<T: ?Sized, U: ?Sized> CoerceUnsized<Unique<U>> for Unique<T> where T: Unsize<U> {}
impl<T: ?Sized, U: ?Sized> DispatchFromDyn<Unique<U>> for Unique<T> where T: Unsize<U> {}

#[lang = "owned_box"]
pub struct Box<T: ?Sized>(Unique<T>, ());

impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<Box<U>> for Box<T> {}

impl<T: ?Sized> Drop for Box<T> {
    fn drop(&mut self) {
        // drop is currently performed by compiler.
    }
}

impl<T: ?Sized> Deref for Box<T> {
    type Target = T;

    fn deref(&self) -> &Self::Target {
        &**self
    }
}

#[lang = "exchange_malloc"]
unsafe fn allocate(size: usize, _align: usize) -> *mut u8 {
    libc::malloc(size)
}

#[lang = "box_free"]
unsafe fn box_free<T: ?Sized>(ptr: Unique<T>, _alloc: ()) {
    libc::free(ptr.pointer.0 as *mut u8);
}

#[lang = "drop"]
pub trait Drop {
    fn drop(&mut self);
}

#[lang = "manually_drop"]
#[repr(transparent)]
pub struct ManuallyDrop<T: ?Sized> {
    pub value: T,
}

#[lang = "maybe_uninit"]
#[repr(transparent)]
pub union MaybeUninit<T> {
    pub uninit: (),
    pub value: ManuallyDrop<T>,
}

pub mod intrinsics {
    extern "rust-intrinsic" {
        #[rustc_safe_intrinsic]
        pub fn abort() -> !;
        #[rustc_safe_intrinsic]
        pub fn size_of<T>() -> usize;
        pub fn size_of_val<T: ?::Sized>(val: *const T) -> usize;
        #[rustc_safe_intrinsic]
        pub fn min_align_of<T>() -> usize;
        pub fn min_align_of_val<T: ?::Sized>(val: *const T) -> usize;
        pub fn copy<T>(src: *const T, dst: *mut T, count: usize);
        pub fn transmute<T, U>(e: T) -> U;
        pub fn ctlz_nonzero<T>(x: T) -> T;
        #[rustc_safe_intrinsic]
        pub fn needs_drop<T: ?::Sized>() -> bool;
        #[rustc_safe_intrinsic]
        pub fn bitreverse<T>(x: T) -> T;
        #[rustc_safe_intrinsic]
        pub fn bswap<T>(x: T) -> T;
        pub fn write_bytes<T>(dst: *mut T, val: u8, count: usize);
    }
}

pub mod libc {
    // With the new Universal CRT, msvc has switched to all the printf functions being inline wrapper
    // functions. legacy_stdio_definitions.lib which provides the printf wrapper functions as normal
    // symbols to link against.
    #[cfg_attr(unix, link(name = "c"))]
    #[cfg_attr(target_env="msvc", link(name="legacy_stdio_definitions"))]
    extern "C" {
        pub fn printf(format: *const i8, ...) -> i32;
    }

    #[cfg_attr(unix, link(name = "c"))]
    #[cfg_attr(target_env = "msvc", link(name = "msvcrt"))]
    extern "C" {
        pub fn puts(s: *const i8) -> i32;
        pub fn malloc(size: usize) -> *mut u8;
        pub fn free(ptr: *mut u8);
        pub fn memcpy(dst: *mut u8, src: *const u8, size: usize);
        pub fn memmove(dst: *mut u8, src: *const u8, size: usize);
        pub fn strncpy(dst: *mut u8, src: *const u8, size: usize);
    }
}

#[lang = "index"]
pub trait Index<Idx: ?Sized> {
    type Output: ?Sized;
    fn index(&self, index: Idx) -> &Self::Output;
}

impl<T> Index<usize> for [T; 3] {
    type Output = T;

    fn index(&self, index: usize) -> &Self::Output {
        &self[index]
    }
}

impl<T> Index<usize> for [T] {
    type Output = T;

    fn index(&self, index: usize) -> &Self::Output {
        &self[index]
    }
}

extern {
    type VaListImpl;
}

#[lang = "va_list"]
#[repr(transparent)]
pub struct VaList<'a>(&'a mut VaListImpl);

#[rustc_builtin_macro]
#[rustc_macro_transparency = "semitransparent"]
pub macro stringify($($t:tt)*) { /* compiler built-in */ }

#[rustc_builtin_macro]
#[rustc_macro_transparency = "semitransparent"]
pub macro file() { /* compiler built-in */ }

#[rustc_builtin_macro]
#[rustc_macro_transparency = "semitransparent"]
pub macro line() { /* compiler built-in */ }

#[rustc_builtin_macro]
#[rustc_macro_transparency = "semitransparent"]
pub macro cfg() { /* compiler built-in */ }

#[rustc_builtin_macro]
#[rustc_macro_transparency = "semitransparent"]
pub macro global_asm() { /* compiler built-in */ }

pub static A_STATIC: u8 = 42;

#[lang = "panic_location"]
struct PanicLocation {
    file: &'static str,
    line: u32,
    column: u32,
}

#[no_mangle]
#[cfg(not(windows))]
pub fn get_tls() -> u8 {
    #[thread_local]
    static A: u8 = 42;

    A
}
Commit	Line	Data
29967ef6	1	#![feature(
5e7ed085 FG	2	no_core,
	3	lang_items,
	4	intrinsics,
	5	unboxed_closures,
	6	extern_types,
	7	decl_macro,
	8	rustc_attrs,
	9	transparent_unions,
	10	auto_traits,
	11	thread_local
29967ef6 XL	12	)]
	13	#![no_core]
	14	#![allow(dead_code)]
	15
	16	#[lang = "sized"]
	17	pub trait Sized {}
	18
04454e1e FG	19	#[lang = "destruct"]
	20	pub trait Destruct {}
	21
9c376795 FG	22	#[lang = "tuple_trait"]
	23	pub trait Tuple {}
	24
29967ef6 XL	25	#[lang = "unsize"]
	26	pub trait Unsize<T: ?Sized> {}
	27
	28	#[lang = "coerce_unsized"]
	29	pub trait CoerceUnsized<T> {}
	30
	31	impl<'a, 'b: 'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<&'a U> for &'b T {}
	32	impl<'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<&'a mut U> for &'a mut T {}
	33	impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<const U> for const T {}
	34	impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<mut U> for mut T {}
	35
	36	#[lang = "dispatch_from_dyn"]
	37	pub trait DispatchFromDyn<T> {}
	38
	39	// &T -> &U
	40	impl<'a, T: ?Sized+Unsize<U>, U: ?Sized> DispatchFromDyn<&'a U> for &'a T {}
	41	// &mut T -> &mut U
	42	impl<'a, T: ?Sized+Unsize<U>, U: ?Sized> DispatchFromDyn<&'a mut U> for &'a mut T {}
	43	// const T -> const U
	44	impl<T: ?Sized+Unsize<U>, U: ?Sized> DispatchFromDyn<const U> for const T {}
	45	// mut T -> mut U
	46	impl<T: ?Sized+Unsize<U>, U: ?Sized> DispatchFromDyn<mut U> for mut T {}
	47	impl<T: ?Sized + Unsize<U>, U: ?Sized> DispatchFromDyn<Box<U>> for Box<T> {}
	48
	49	#[lang = "receiver"]
	50	pub trait Receiver {}
	51
	52	impl<T: ?Sized> Receiver for &T {}
	53	impl<T: ?Sized> Receiver for &mut T {}
	54	impl<T: ?Sized> Receiver for Box<T> {}
	55
	56	#[lang = "copy"]
	57	pub unsafe trait Copy {}
	58
	59	unsafe impl Copy for bool {}
	60	unsafe impl Copy for u8 {}
	61	unsafe impl Copy for u16 {}
	62	unsafe impl Copy for u32 {}
	63	unsafe impl Copy for u64 {}
	64	unsafe impl Copy for u128 {}
	65	unsafe impl Copy for usize {}
	66	unsafe impl Copy for i8 {}
	67	unsafe impl Copy for i16 {}
	68	unsafe impl Copy for i32 {}
	69	unsafe impl Copy for isize {}
	70	unsafe impl Copy for f32 {}
5e7ed085	71	unsafe impl Copy for f64 {}
29967ef6 XL	72	unsafe impl Copy for char {}
	73	unsafe impl<'a, T: ?Sized> Copy for &'a T {}
	74	unsafe impl<T: ?Sized> Copy for *const T {}
	75	unsafe impl<T: ?Sized> Copy for *mut T {}
	76	unsafe impl<T: Copy> Copy for Option<T> {}
	77
	78	#[lang = "sync"]
	79	pub unsafe trait Sync {}
	80
	81	unsafe impl Sync for bool {}
	82	unsafe impl Sync for u8 {}
	83	unsafe impl Sync for u16 {}
	84	unsafe impl Sync for u32 {}
	85	unsafe impl Sync for u64 {}
	86	unsafe impl Sync for usize {}
	87	unsafe impl Sync for i8 {}
	88	unsafe impl Sync for i16 {}
	89	unsafe impl Sync for i32 {}
	90	unsafe impl Sync for isize {}
	91	unsafe impl Sync for char {}
	92	unsafe impl<'a, T: ?Sized> Sync for &'a T {}
	93	unsafe impl Sync for [u8; 16] {}
	94
	95	#[lang = "freeze"]
	96	unsafe auto trait Freeze {}
	97
	98	unsafe impl<T: ?Sized> Freeze for PhantomData<T> {}
	99	unsafe impl<T: ?Sized> Freeze for *const T {}
	100	unsafe impl<T: ?Sized> Freeze for *mut T {}
	101	unsafe impl<T: ?Sized> Freeze for &T {}
	102	unsafe impl<T: ?Sized> Freeze for &mut T {}
	103
	104	#[lang = "structural_peq"]
	105	pub trait StructuralPartialEq {}
	106
	107	#[lang = "structural_teq"]
	108	pub trait StructuralEq {}
	109
	110	#[lang = "not"]
	111	pub trait Not {
	112	type Output;
	113
	114	fn not(self) -> Self::Output;
	115	}
	116
	117	impl Not for bool {
	118	type Output = bool;
	119
	120	fn not(self) -> bool {
	121	!self
	122	}
	123	}
	124
	125	#[lang = "mul"]
	126	pub trait Mul<RHS = Self> {
	127	type Output;
	128
	129	#[must_use]
	130	fn mul(self, rhs: RHS) -> Self::Output;
	131	}
	132
	133	impl Mul for u8 {
	134	type Output = Self;
	135
136	fn mul(self, rhs: Self) -> Self::Output {
137	self * rhs
138	}
139	}
140
141	impl Mul for usize {
142	type Output = Self;
143
144	fn mul(self, rhs: Self) -> Self::Output {
145	self * rhs
146	}
147	}
148
149	#[lang = "add"]
150	pub trait Add<RHS = Self> {
151	type Output;
152
153	fn add(self, rhs: RHS) -> Self::Output;
154	}
155
156	impl Add for u8 {
157	type Output = Self;
158
159	fn add(self, rhs: Self) -> Self {
160	self + rhs
161	}
162	}
163
164	impl Add for i8 {
165	type Output = Self;
166
167	fn add(self, rhs: Self) -> Self {
168	self + rhs
169	}
170	}
171
172	impl Add for usize {
173	type Output = Self;
174
175	fn add(self, rhs: Self) -> Self {
176	self + rhs
177	}
178	}
179
180	#[lang = "sub"]
181	pub trait Sub<RHS = Self> {
182	type Output;
183
184	fn sub(self, rhs: RHS) -> Self::Output;
185	}
186
187	impl Sub for usize {
188	type Output = Self;
189
190	fn sub(self, rhs: Self) -> Self {
191	self - rhs
192	}
193	}
194
195	impl Sub for u8 {
196	type Output = Self;
197
198	fn sub(self, rhs: Self) -> Self {
199	self - rhs
200	}
201	}
202
203	impl Sub for i8 {
204	type Output = Self;
205
206	fn sub(self, rhs: Self) -> Self {
207	self - rhs
208	}
209	}
210
211	impl Sub for i16 {
212	type Output = Self;
213
214	fn sub(self, rhs: Self) -> Self {
215	self - rhs
216	}
217	}
218
219	#[lang = "rem"]
220	pub trait Rem<RHS = Self> {
221	type Output;
222
223	fn rem(self, rhs: RHS) -> Self::Output;
224	}
225
226	impl Rem for usize {
227	type Output = Self;
228
229	fn rem(self, rhs: Self) -> Self {
230	self % rhs
231	}
232	}
233
234	#[lang = "bitor"]
235	pub trait BitOr<RHS = Self> {
236	type Output;
237
238	#[must_use]
239	fn bitor(self, rhs: RHS) -> Self::Output;
240	}
241
242	impl BitOr for bool {
243	type Output = bool;
244
245	fn bitor(self, rhs: bool) -> bool {
246	self \| rhs
247	}
248	}
249
250	impl<'a> BitOr<bool> for &'a bool {
251	type Output = bool;
252
253	fn bitor(self, rhs: bool) -> bool {
254	*self \| rhs
255	}
256	}
257
258	#[lang = "eq"]
259	pub trait PartialEq<Rhs: ?Sized = Self> {
260	fn eq(&self, other: &Rhs) -> bool;
261	fn ne(&self, other: &Rhs) -> bool;
262	}
263
264	impl PartialEq for u8 {
265	fn eq(&self, other: &u8) -> bool {
266	(self) == (other)
267	}
268	fn ne(&self, other: &u8) -> bool {
269	(self) != (other)
270	}
271	}
272
273	impl PartialEq for u16 {
274	fn eq(&self, other: &u16) -> bool {
275	(self) == (other)
276	}
277	fn ne(&self, other: &u16) -> bool {
278	(self) != (other)
279	}
280	}
281
282	impl PartialEq for u32 {
283	fn eq(&self, other: &u32) -> bool {
284	(self) == (other)
285	}
286	fn ne(&self, other: &u32) -> bool {
287	(self) != (other)
288	}
289	}
290
291
292	impl PartialEq for u64 {
293	fn eq(&self, other: &u64) -> bool {
294	(self) == (other)
295	}
296	fn ne(&self, other: &u64) -> bool {
297	(self) != (other)
298	}
299	}
300
301	impl PartialEq for u128 {
302	fn eq(&self, other: &u128) -> bool {
303	(self) == (other)
304	}
305	fn ne(&self, other: &u128) -> bool {
306	(self) != (other)
307	}
308	}
309
310	impl PartialEq for usize {
311	fn eq(&self, other: &usize) -> bool {
312	(self) == (other)
313	}
314	fn ne(&self, other: &usize) -> bool {
315	(self) != (other)
316	}
317	}
318
319	impl PartialEq for i8 {
320	fn eq(&self, other: &i8) -> bool {
321	(self) == (other)
322	}
323	fn ne(&self, other: &i8) -> bool {
324	(self) != (other)
325	}
326	}
327
328	impl PartialEq for i32 {
329	fn eq(&self, other: &i32) -> bool {
330	(self) == (other)
331	}
332	fn ne(&self, other: &i32) -> bool {
333	(self) != (other)
334	}
335	}
336
337	impl PartialEq for isize {
338	fn eq(&self, other: &isize) -> bool {
339	(self) == (other)
340	}
341	fn ne(&self, other: &isize) -> bool {
342	(self) != (other)
343	}
344	}
345
346	impl PartialEq for char {
347	fn eq(&self, other: &char) -> bool {
348	(self) == (other)
349	}
350	fn ne(&self, other: &char) -> bool {
351	(self) != (other)
352	}
353	}
354
355	impl<T: ?Sized> PartialEq for *const T {
356	fn eq(&self, other: &*const T) -> bool {
357	self == other
358	}
359	fn ne(&self, other: &*const T) -> bool {
360	self != other
361	}
362	}
363
364	impl <T: PartialEq> PartialEq for Option<T> {
365	fn eq(&self, other: &Self) -> bool {
366	match (self, other) {
367	(Some(lhs), Some(rhs)) => lhs == rhs,
368	(None, None) => true,
369	_ => false,
370	}
371	}
372
373	fn ne(&self, other: &Self) -> bool {
374	match (self, other) {
375	(Some(lhs), Some(rhs)) => lhs != rhs,
376	(None, None) => false,
377	_ => true,
378	}
379	}
380	}
381
6a06907d XL	382	#[lang = "shl"]
	383	pub trait Shl<RHS = Self> {
	384	type Output;
	385
	386	#[must_use]
	387	fn shl(self, rhs: RHS) -> Self::Output;
	388	}
	389
	390	impl Shl for u128 {
	391	type Output = u128;
	392
	393	fn shl(self, rhs: u128) -> u128 {
	394	self << rhs
	395	}
	396	}
	397
29967ef6 XL	398	#[lang = "neg"]
	399	pub trait Neg {
	400	type Output;
	401
	402	fn neg(self) -> Self::Output;
	403	}
	404
	405	impl Neg for i8 {
	406	type Output = i8;
	407
	408	fn neg(self) -> i8 {
	409	-self
	410	}
	411	}
	412
	413	impl Neg for i16 {
	414	type Output = i16;
	415
	416	fn neg(self) -> i16 {
	417	self
	418	}
	419	}
	420
	421	impl Neg for isize {
	422	type Output = isize;
	423
	424	fn neg(self) -> isize {
	425	-self
	426	}
	427	}
	428
	429	impl Neg for f32 {
	430	type Output = f32;
	431
	432	fn neg(self) -> f32 {
	433	-self
	434	}
	435	}
	436
	437	pub enum Option<T> {
	438	Some(T),
	439	None,
	440	}
	441
	442	pub use Option::*;
	443
	444	#[lang = "phantom_data"]
	445	pub struct PhantomData<T: ?Sized>;
	446
	447	#[lang = "fn_once"]
	448	#[rustc_paren_sugar]
9c376795	449	pub trait FnOnce<Args: Tuple> {
29967ef6 XL	450	#[lang = "fn_once_output"]
	451	type Output;
	452
	453	extern "rust-call" fn call_once(self, args: Args) -> Self::Output;
	454	}
	455
	456	#[lang = "fn_mut"]
	457	#[rustc_paren_sugar]
9c376795	458	pub trait FnMut<Args: Tuple>: FnOnce<Args> {
29967ef6 XL	459	extern "rust-call" fn call_mut(&mut self, args: Args) -> Self::Output;
	460	}
	461
	462	#[lang = "panic"]
	463	#[track_caller]
064997fb	464	pub fn panic(_msg: &'static str) -> ! {
29967ef6 XL	465	unsafe {
	466	libc::puts("Panicking\n\0" as const str as const i8);
	467	intrinsics::abort();
	468	}
	469	}
	470
	471	#[lang = "panic_bounds_check"]
	472	#[track_caller]
	473	fn panic_bounds_check(index: usize, len: usize) -> ! {
	474	unsafe {
	475	libc::printf("index out of bounds: the len is %d but the index is %d\n\0" as const str as const i8, len, index);
	476	intrinsics::abort();
	477	}
	478	}
	479
	480	#[lang = "eh_personality"]
	481	fn eh_personality() -> ! {
	482	loop {}
	483	}
	484
	485	#[lang = "drop_in_place"]
	486	#[allow(unconditional_recursion)]
	487	pub unsafe fn drop_in_place<T: ?Sized>(to_drop: *mut T) {
	488	// Code here does not matter - this is replaced by the
	489	// real drop glue by the compiler.
	490	drop_in_place(to_drop);
	491	}
	492
	493	#[lang = "deref"]
	494	pub trait Deref {
	495	type Target: ?Sized;
	496
	497	fn deref(&self) -> &Self::Target;
	498	}
	499
04454e1e FG	500	#[repr(transparent)]
	501	#[rustc_layout_scalar_valid_range_start(1)]
	502	#[rustc_nonnull_optimization_guaranteed]
064997fb	503	pub struct NonNull<T: ?Sized>(pub *const T);
04454e1e FG	504
	505	impl<T: ?Sized, U: ?Sized> CoerceUnsized<NonNull<U>> for NonNull<T> where T: Unsize<U> {}
	506	impl<T: ?Sized, U: ?Sized> DispatchFromDyn<NonNull<U>> for NonNull<T> where T: Unsize<U> {}
	507
5e7ed085	508	pub struct Unique<T: ?Sized> {
04454e1e	509	pub pointer: NonNull<T>,
5e7ed085 FG	510	pub _marker: PhantomData<T>,
	511	}
	512
	513	impl<T: ?Sized, U: ?Sized> CoerceUnsized<Unique<U>> for Unique<T> where T: Unsize<U> {}
5e7ed085 FG	514	impl<T: ?Sized, U: ?Sized> DispatchFromDyn<Unique<U>> for Unique<T> where T: Unsize<U> {}
5e7ed085 FG	515
29967ef6	516	#[lang = "owned_box"]
5e7ed085	517	pub struct Box<T: ?Sized>(Unique<T>, ());
29967ef6 XL	518
	519	impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<Box<U>> for Box<T> {}
	520
	521	impl<T: ?Sized> Drop for Box<T> {
	522	fn drop(&mut self) {
	523	// drop is currently performed by compiler.
	524	}
	525	}
	526
064997fb	527	impl<T: ?Sized> Deref for Box<T> {
29967ef6 XL	528	type Target = T;
	529
	530	fn deref(&self) -> &Self::Target {
	531	&**self
	532	}
	533	}
	534
	535	#[lang = "exchange_malloc"]
	536	unsafe fn allocate(size: usize, _align: usize) -> *mut u8 {
	537	libc::malloc(size)
	538	}
	539
	540	#[lang = "box_free"]
f2b60f7d	541	unsafe fn box_free<T: ?Sized>(ptr: Unique<T>, _alloc: ()) {
04454e1e	542	libc::free(ptr.pointer.0 as *mut u8);
29967ef6 XL	543	}
	544
	545	#[lang = "drop"]
	546	pub trait Drop {
	547	fn drop(&mut self);
	548	}
	549
	550	#[lang = "manually_drop"]
	551	#[repr(transparent)]
	552	pub struct ManuallyDrop<T: ?Sized> {
	553	pub value: T,
	554	}
	555
	556	#[lang = "maybe_uninit"]
	557	#[repr(transparent)]
	558	pub union MaybeUninit<T> {
	559	pub uninit: (),
	560	pub value: ManuallyDrop<T>,
	561	}
	562
	563	pub mod intrinsics {
	564	extern "rust-intrinsic" {
2b03887a	565	#[rustc_safe_intrinsic]
29967ef6	566	pub fn abort() -> !;
2b03887a	567	#[rustc_safe_intrinsic]
29967ef6 XL	568	pub fn size_of<T>() -> usize;
29967ef6 XL	569	pub fn size_of_val<T: ?::Sized>(val: *const T) -> usize;
2b03887a	570	#[rustc_safe_intrinsic]
29967ef6 XL	571	pub fn min_align_of<T>() -> usize;
	572	pub fn min_align_of_val<T: ?::Sized>(val: *const T) -> usize;
	573	pub fn copy<T>(src: const T, dst: mut T, count: usize);
	574	pub fn transmute<T, U>(e: T) -> U;
	575	pub fn ctlz_nonzero<T>(x: T) -> T;
2b03887a	576	#[rustc_safe_intrinsic]
923072b8	577	pub fn needs_drop<T: ?::Sized>() -> bool;
2b03887a	578	#[rustc_safe_intrinsic]
29967ef6	579	pub fn bitreverse<T>(x: T) -> T;
2b03887a	580	#[rustc_safe_intrinsic]
29967ef6 XL	581	pub fn bswap<T>(x: T) -> T;
	582	pub fn write_bytes<T>(dst: *mut T, val: u8, count: usize);
	583	}
	584	}
	585
	586	pub mod libc {
f2b60f7d FG	587	// With the new Universal CRT, msvc has switched to all the printf functions being inline wrapper
	588	// functions. legacy_stdio_definitions.lib which provides the printf wrapper functions as normal
	589	// symbols to link against.
	590	#[cfg_attr(unix, link(name = "c"))]
	591	#[cfg_attr(target_env="msvc", link(name="legacy_stdio_definitions"))]
	592	extern "C" {
	593	pub fn printf(format: *const i8, ...) -> i32;
	594	}
	595
5869c6ff XL	596	#[cfg_attr(unix, link(name = "c"))]
5869c6ff XL	597	#[cfg_attr(target_env = "msvc", link(name = "msvcrt"))]
29967ef6 XL	598	extern "C" {
29967ef6 XL	599	pub fn puts(s: *const i8) -> i32;
29967ef6 XL	600	pub fn malloc(size: usize) -> *mut u8;
	601	pub fn free(ptr: *mut u8);
	602	pub fn memcpy(dst: mut u8, src: const u8, size: usize);
	603	pub fn memmove(dst: mut u8, src: const u8, size: usize);
	604	pub fn strncpy(dst: mut u8, src: const u8, size: usize);
	605	}
	606	}
	607
	608	#[lang = "index"]
	609	pub trait Index<Idx: ?Sized> {
	610	type Output: ?Sized;
	611	fn index(&self, index: Idx) -> &Self::Output;
	612	}
	613
	614	impl<T> Index<usize> for [T; 3] {
	615	type Output = T;
	616
	617	fn index(&self, index: usize) -> &Self::Output {
	618	&self[index]
	619	}
	620	}
	621
	622	impl<T> Index<usize> for [T] {
	623	type Output = T;
	624
	625	fn index(&self, index: usize) -> &Self::Output {
	626	&self[index]
	627	}
	628	}
	629
	630	extern {
	631	type VaListImpl;
	632	}
	633
	634	#[lang = "va_list"]
	635	#[repr(transparent)]
	636	pub struct VaList<'a>(&'a mut VaListImpl);
	637
	638	#[rustc_builtin_macro]
	639	#[rustc_macro_transparency = "semitransparent"]
	640	pub macro stringify($($t:tt)) { / compiler built-in */ }
	641
	642	#[rustc_builtin_macro]
	643	#[rustc_macro_transparency = "semitransparent"]
	644	pub macro file() { /* compiler built-in */ }
	645
	646	#[rustc_builtin_macro]
	647	#[rustc_macro_transparency = "semitransparent"]
	648	pub macro line() { /* compiler built-in */ }
	649
	650	#[rustc_builtin_macro]
	651	#[rustc_macro_transparency = "semitransparent"]
	652	pub macro cfg() { /* compiler built-in */ }
	653
	654	#[rustc_builtin_macro]
	655	#[rustc_macro_transparency = "semitransparent"]
	656	pub macro global_asm() { /* compiler built-in */ }
	657
	658	pub static A_STATIC: u8 = 42;
	659
	660	#[lang = "panic_location"]
	661	struct PanicLocation {
	662	file: &'static str,
	663	line: u32,
664	column: u32,
665	}
666
667	#[no_mangle]
cdc7bbd5	668	#[cfg(not(windows))]
29967ef6 XL	669	pub fn get_tls() -> u8 {
	670	#[thread_local]
	671	static A: u8 = 42;
	672
	673	A
	674	}