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