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Commit | Line | Data |
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c295e0f8 | 1 | #![feature(no_core, lang_items, never_type, linkage, extern_types, thread_local, box_syntax)] |
29967ef6 XL |
2 | #![no_core] |
3 | #![allow(dead_code, non_camel_case_types)] | |
4 | ||
5 | extern crate mini_core; | |
6 | ||
7 | use mini_core::*; | |
8 | use mini_core::libc::*; | |
9 | ||
10 | unsafe extern "C" fn my_puts(s: *const i8) { | |
11 | puts(s); | |
12 | } | |
13 | ||
17df50a5 XL |
14 | macro_rules! assert { |
15 | ($e:expr) => { | |
16 | if !$e { | |
17 | panic(stringify!(! $e)); | |
18 | } | |
19 | }; | |
20 | } | |
21 | ||
22 | macro_rules! assert_eq { | |
23 | ($l:expr, $r: expr) => { | |
24 | if $l != $r { | |
25 | panic(stringify!($l != $r)); | |
26 | } | |
27 | } | |
28 | } | |
29 | ||
29967ef6 XL |
30 | #[lang = "termination"] |
31 | trait Termination { | |
32 | fn report(self) -> i32; | |
33 | } | |
34 | ||
35 | impl Termination for () { | |
36 | fn report(self) -> i32 { | |
37 | unsafe { | |
38 | NUM = 6 * 7 + 1 + (1u8 == 1u8) as u8; // 44 | |
17df50a5 | 39 | assert_eq!(*NUM_REF as i32, 44); |
29967ef6 | 40 | } |
17df50a5 | 41 | 0 |
29967ef6 XL |
42 | } |
43 | } | |
44 | ||
45 | trait SomeTrait { | |
46 | fn object_safe(&self); | |
47 | } | |
48 | ||
49 | impl SomeTrait for &'static str { | |
50 | fn object_safe(&self) { | |
51 | unsafe { | |
52 | puts(*self as *const str as *const i8); | |
53 | } | |
54 | } | |
55 | } | |
56 | ||
57 | struct NoisyDrop { | |
58 | text: &'static str, | |
59 | inner: NoisyDropInner, | |
60 | } | |
61 | ||
62 | struct NoisyDropInner; | |
63 | ||
64 | impl Drop for NoisyDrop { | |
65 | fn drop(&mut self) { | |
66 | unsafe { | |
67 | puts(self.text as *const str as *const i8); | |
68 | } | |
69 | } | |
70 | } | |
71 | ||
72 | impl Drop for NoisyDropInner { | |
73 | fn drop(&mut self) { | |
74 | unsafe { | |
75 | puts("Inner got dropped!\0" as *const str as *const i8); | |
76 | } | |
77 | } | |
78 | } | |
79 | ||
80 | impl SomeTrait for NoisyDrop { | |
81 | fn object_safe(&self) {} | |
82 | } | |
83 | ||
84 | enum Ordering { | |
85 | Less = -1, | |
86 | Equal = 0, | |
87 | Greater = 1, | |
88 | } | |
89 | ||
90 | #[lang = "start"] | |
91 | fn start<T: Termination + 'static>( | |
92 | main: fn() -> T, | |
93 | argc: isize, | |
94 | argv: *const *const u8, | |
95 | ) -> isize { | |
96 | if argc == 3 { | |
97 | unsafe { puts(*argv as *const i8); } | |
98 | unsafe { puts(*((argv as usize + intrinsics::size_of::<*const u8>()) as *const *const i8)); } | |
99 | unsafe { puts(*((argv as usize + 2 * intrinsics::size_of::<*const u8>()) as *const *const i8)); } | |
100 | } | |
101 | ||
17df50a5 | 102 | main().report() as isize |
29967ef6 XL |
103 | } |
104 | ||
105 | static mut NUM: u8 = 6 * 7; | |
106 | static NUM_REF: &'static u8 = unsafe { &NUM }; | |
107 | ||
29967ef6 XL |
108 | struct Unique<T: ?Sized> { |
109 | pointer: *const T, | |
110 | _marker: PhantomData<T>, | |
111 | } | |
112 | ||
113 | impl<T: ?Sized, U: ?Sized> CoerceUnsized<Unique<U>> for Unique<T> where T: Unsize<U> {} | |
114 | ||
115 | unsafe fn zeroed<T>() -> T { | |
116 | let mut uninit = MaybeUninit { uninit: () }; | |
117 | intrinsics::write_bytes(&mut uninit.value.value as *mut T, 0, 1); | |
118 | uninit.value.value | |
119 | } | |
120 | ||
121 | fn take_f32(_f: f32) {} | |
122 | fn take_unique(_u: Unique<()>) {} | |
123 | ||
124 | fn return_u128_pair() -> (u128, u128) { | |
125 | (0, 0) | |
126 | } | |
127 | ||
128 | fn call_return_u128_pair() { | |
129 | return_u128_pair(); | |
130 | } | |
131 | ||
a2a8927a | 132 | #[allow(unreachable_code)] // FIXME false positive |
29967ef6 XL |
133 | fn main() { |
134 | take_unique(Unique { | |
135 | pointer: 0 as *const (), | |
136 | _marker: PhantomData, | |
137 | }); | |
138 | take_f32(0.1); | |
139 | ||
140 | call_return_u128_pair(); | |
141 | ||
142 | let slice = &[0, 1] as &[i32]; | |
143 | let slice_ptr = slice as *const [i32] as *const i32; | |
144 | ||
145 | assert_eq!(slice_ptr as usize % 4, 0); | |
146 | ||
147 | //return; | |
148 | ||
149 | unsafe { | |
150 | printf("Hello %s\n\0" as *const str as *const i8, "printf\0" as *const str as *const i8); | |
151 | ||
152 | let hello: &[u8] = b"Hello\0" as &[u8; 6]; | |
153 | let ptr: *const i8 = hello as *const [u8] as *const i8; | |
154 | puts(ptr); | |
155 | ||
156 | let world: Box<&str> = box "World!\0"; | |
157 | puts(*world as *const str as *const i8); | |
158 | world as Box<dyn SomeTrait>; | |
159 | ||
160 | assert_eq!(intrinsics::bitreverse(0b10101000u8), 0b00010101u8); | |
161 | ||
162 | assert_eq!(intrinsics::bswap(0xabu8), 0xabu8); | |
163 | assert_eq!(intrinsics::bswap(0xddccu16), 0xccddu16); | |
164 | assert_eq!(intrinsics::bswap(0xffee_ddccu32), 0xccdd_eeffu32); | |
165 | assert_eq!(intrinsics::bswap(0x1234_5678_ffee_ddccu64), 0xccdd_eeff_7856_3412u64); | |
166 | ||
167 | assert_eq!(intrinsics::size_of_val(hello) as u8, 6); | |
168 | ||
169 | let chars = &['C', 'h', 'a', 'r', 's']; | |
170 | let chars = chars as &[char]; | |
171 | assert_eq!(intrinsics::size_of_val(chars) as u8, 4 * 5); | |
172 | ||
173 | let a: &dyn SomeTrait = &"abc\0"; | |
174 | a.object_safe(); | |
175 | ||
176 | assert_eq!(intrinsics::size_of_val(a) as u8, 16); | |
177 | assert_eq!(intrinsics::size_of_val(&0u32) as u8, 4); | |
178 | ||
179 | assert_eq!(intrinsics::min_align_of::<u16>() as u8, 2); | |
180 | assert_eq!(intrinsics::min_align_of_val(&a) as u8, intrinsics::min_align_of::<&str>() as u8); | |
181 | ||
182 | assert!(!intrinsics::needs_drop::<u8>()); | |
183 | assert!(intrinsics::needs_drop::<NoisyDrop>()); | |
184 | ||
185 | Unique { | |
186 | pointer: 0 as *const &str, | |
187 | _marker: PhantomData, | |
188 | } as Unique<dyn SomeTrait>; | |
189 | ||
190 | struct MyDst<T: ?Sized>(T); | |
191 | ||
192 | intrinsics::size_of_val(&MyDst([0u8; 4]) as &MyDst<[u8]>); | |
193 | ||
194 | struct Foo { | |
195 | x: u8, | |
196 | y: !, | |
197 | } | |
198 | ||
199 | unsafe fn uninitialized<T>() -> T { | |
200 | MaybeUninit { uninit: () }.value.value | |
201 | } | |
202 | ||
203 | zeroed::<(u8, u8)>(); | |
204 | #[allow(unreachable_code)] | |
205 | { | |
206 | if false { | |
207 | zeroed::<!>(); | |
208 | zeroed::<Foo>(); | |
209 | uninitialized::<Foo>(); | |
210 | } | |
211 | } | |
212 | } | |
213 | ||
214 | let _ = box NoisyDrop { | |
215 | text: "Boxed outer got dropped!\0", | |
216 | inner: NoisyDropInner, | |
217 | } as Box<dyn SomeTrait>; | |
218 | ||
219 | const FUNC_REF: Option<fn()> = Some(main); | |
220 | match FUNC_REF { | |
221 | Some(_) => {}, | |
222 | None => assert!(false), | |
223 | } | |
224 | ||
225 | match Ordering::Less { | |
226 | Ordering::Less => {}, | |
227 | _ => assert!(false), | |
228 | } | |
229 | ||
230 | [NoisyDropInner, NoisyDropInner]; | |
231 | ||
232 | let x = &[0u32, 42u32] as &[u32]; | |
233 | match x { | |
234 | [] => assert_eq!(0u32, 1), | |
235 | [_, ref y @ ..] => assert_eq!(&x[1] as *const u32 as usize, &y[0] as *const u32 as usize), | |
236 | } | |
237 | ||
238 | assert_eq!(((|()| 42u8) as fn(()) -> u8)(()), 42); | |
239 | ||
cdc7bbd5 | 240 | #[cfg(not(any(jit, windows)))] |
29967ef6 XL |
241 | { |
242 | extern { | |
243 | #[linkage = "extern_weak"] | |
244 | static ABC: *const u8; | |
245 | } | |
246 | ||
247 | { | |
248 | extern { | |
249 | #[linkage = "extern_weak"] | |
250 | static ABC: *const u8; | |
251 | } | |
252 | } | |
253 | ||
254 | unsafe { assert_eq!(ABC as usize, 0); } | |
255 | } | |
256 | ||
257 | &mut (|| Some(0 as *const ())) as &mut dyn FnMut() -> Option<*const ()>; | |
258 | ||
259 | let f = 1000.0; | |
260 | assert_eq!(f as u8, 255); | |
261 | let f2 = -1000.0; | |
262 | assert_eq!(f2 as i8, -128); | |
263 | assert_eq!(f2 as u8, 0); | |
264 | ||
6a06907d XL |
265 | let amount = 0; |
266 | assert_eq!(1u128 << amount, 1); | |
267 | ||
29967ef6 XL |
268 | static ANOTHER_STATIC: &u8 = &A_STATIC; |
269 | assert_eq!(*ANOTHER_STATIC, 42); | |
270 | ||
271 | check_niche_behavior(); | |
272 | ||
273 | extern "C" { | |
274 | type ExternType; | |
275 | } | |
276 | ||
277 | struct ExternTypeWrapper { | |
278 | _a: ExternType, | |
279 | } | |
280 | ||
281 | let nullptr = 0 as *const (); | |
282 | let extern_nullptr = nullptr as *const ExternTypeWrapper; | |
283 | extern_nullptr as *const (); | |
284 | let slice_ptr = &[] as *const [u8]; | |
285 | slice_ptr as *const u8; | |
286 | ||
287 | let repeat = [Some(42); 2]; | |
288 | assert_eq!(repeat[0], Some(42)); | |
289 | assert_eq!(repeat[1], Some(42)); | |
290 | ||
291 | from_decimal_string(); | |
292 | ||
cdc7bbd5 | 293 | #[cfg(not(any(jit, windows)))] |
29967ef6 XL |
294 | test_tls(); |
295 | ||
136023e0 | 296 | #[cfg(all(not(jit), target_arch = "x86_64", target_os = "linux"))] |
29967ef6 XL |
297 | unsafe { |
298 | global_asm_test(); | |
299 | } | |
17df50a5 XL |
300 | |
301 | // Both statics have a reference that points to the same anonymous allocation. | |
302 | static REF1: &u8 = &42; | |
303 | static REF2: &u8 = REF1; | |
304 | assert_eq!(*REF1, *REF2); | |
29967ef6 XL |
305 | } |
306 | ||
136023e0 | 307 | #[cfg(all(not(jit), target_arch = "x86_64", target_os = "linux"))] |
29967ef6 XL |
308 | extern "C" { |
309 | fn global_asm_test(); | |
310 | } | |
311 | ||
136023e0 | 312 | #[cfg(all(not(jit), target_arch = "x86_64", target_os = "linux"))] |
29967ef6 XL |
313 | global_asm! { |
314 | " | |
315 | .global global_asm_test | |
316 | global_asm_test: | |
317 | // comment that would normally be removed by LLVM | |
318 | ret | |
319 | " | |
320 | } | |
321 | ||
322 | #[repr(C)] | |
323 | enum c_void { | |
324 | _1, | |
325 | _2, | |
326 | } | |
327 | ||
328 | type c_int = i32; | |
329 | type c_ulong = u64; | |
330 | ||
331 | type pthread_t = c_ulong; | |
332 | ||
333 | #[repr(C)] | |
334 | struct pthread_attr_t { | |
335 | __size: [u64; 7], | |
336 | } | |
337 | ||
338 | #[link(name = "pthread")] | |
339 | extern "C" { | |
340 | fn pthread_attr_init(attr: *mut pthread_attr_t) -> c_int; | |
341 | ||
342 | fn pthread_create( | |
343 | native: *mut pthread_t, | |
344 | attr: *const pthread_attr_t, | |
345 | f: extern "C" fn(_: *mut c_void) -> *mut c_void, | |
346 | value: *mut c_void | |
347 | ) -> c_int; | |
348 | ||
349 | fn pthread_join( | |
350 | native: pthread_t, | |
351 | value: *mut *mut c_void | |
352 | ) -> c_int; | |
353 | } | |
354 | ||
355 | #[thread_local] | |
356 | #[cfg(not(jit))] | |
357 | static mut TLS: u8 = 42; | |
358 | ||
359 | #[cfg(not(jit))] | |
360 | extern "C" fn mutate_tls(_: *mut c_void) -> *mut c_void { | |
361 | unsafe { TLS = 0; } | |
362 | 0 as *mut c_void | |
363 | } | |
364 | ||
365 | #[cfg(not(jit))] | |
366 | fn test_tls() { | |
367 | unsafe { | |
368 | let mut attr: pthread_attr_t = zeroed(); | |
369 | let mut thread: pthread_t = 0; | |
370 | ||
371 | assert_eq!(TLS, 42); | |
372 | ||
373 | if pthread_attr_init(&mut attr) != 0 { | |
374 | assert!(false); | |
375 | } | |
376 | ||
377 | if pthread_create(&mut thread, &attr, mutate_tls, 0 as *mut c_void) != 0 { | |
378 | assert!(false); | |
379 | } | |
380 | ||
381 | let mut res = 0 as *mut c_void; | |
382 | pthread_join(thread, &mut res); | |
383 | ||
384 | // TLS of main thread must not have been changed by the other thread. | |
385 | assert_eq!(TLS, 42); | |
386 | ||
387 | puts("TLS works!\n\0" as *const str as *const i8); | |
388 | } | |
389 | } | |
390 | ||
391 | // Copied ui/issues/issue-61696.rs | |
392 | ||
393 | pub enum Infallible {} | |
394 | ||
395 | // The check that the `bool` field of `V1` is encoding a "niche variant" | |
396 | // (i.e. not `V1`, so `V3` or `V4`) used to be mathematically incorrect, | |
397 | // causing valid `V1` values to be interpreted as other variants. | |
398 | pub enum E1 { | |
399 | V1 { f: bool }, | |
400 | V2 { f: Infallible }, | |
401 | V3, | |
402 | V4, | |
403 | } | |
404 | ||
405 | // Computing the discriminant used to be done using the niche type (here `u8`, | |
406 | // from the `bool` field of `V1`), overflowing for variants with large enough | |
407 | // indices (`V3` and `V4`), causing them to be interpreted as other variants. | |
408 | pub enum E2<X> { | |
409 | V1 { f: bool }, | |
410 | ||
411 | /*_00*/ _01(X), _02(X), _03(X), _04(X), _05(X), _06(X), _07(X), | |
412 | _08(X), _09(X), _0A(X), _0B(X), _0C(X), _0D(X), _0E(X), _0F(X), | |
413 | _10(X), _11(X), _12(X), _13(X), _14(X), _15(X), _16(X), _17(X), | |
414 | _18(X), _19(X), _1A(X), _1B(X), _1C(X), _1D(X), _1E(X), _1F(X), | |
415 | _20(X), _21(X), _22(X), _23(X), _24(X), _25(X), _26(X), _27(X), | |
416 | _28(X), _29(X), _2A(X), _2B(X), _2C(X), _2D(X), _2E(X), _2F(X), | |
417 | _30(X), _31(X), _32(X), _33(X), _34(X), _35(X), _36(X), _37(X), | |
418 | _38(X), _39(X), _3A(X), _3B(X), _3C(X), _3D(X), _3E(X), _3F(X), | |
419 | _40(X), _41(X), _42(X), _43(X), _44(X), _45(X), _46(X), _47(X), | |
420 | _48(X), _49(X), _4A(X), _4B(X), _4C(X), _4D(X), _4E(X), _4F(X), | |
421 | _50(X), _51(X), _52(X), _53(X), _54(X), _55(X), _56(X), _57(X), | |
422 | _58(X), _59(X), _5A(X), _5B(X), _5C(X), _5D(X), _5E(X), _5F(X), | |
423 | _60(X), _61(X), _62(X), _63(X), _64(X), _65(X), _66(X), _67(X), | |
424 | _68(X), _69(X), _6A(X), _6B(X), _6C(X), _6D(X), _6E(X), _6F(X), | |
425 | _70(X), _71(X), _72(X), _73(X), _74(X), _75(X), _76(X), _77(X), | |
426 | _78(X), _79(X), _7A(X), _7B(X), _7C(X), _7D(X), _7E(X), _7F(X), | |
427 | _80(X), _81(X), _82(X), _83(X), _84(X), _85(X), _86(X), _87(X), | |
428 | _88(X), _89(X), _8A(X), _8B(X), _8C(X), _8D(X), _8E(X), _8F(X), | |
429 | _90(X), _91(X), _92(X), _93(X), _94(X), _95(X), _96(X), _97(X), | |
430 | _98(X), _99(X), _9A(X), _9B(X), _9C(X), _9D(X), _9E(X), _9F(X), | |
431 | _A0(X), _A1(X), _A2(X), _A3(X), _A4(X), _A5(X), _A6(X), _A7(X), | |
432 | _A8(X), _A9(X), _AA(X), _AB(X), _AC(X), _AD(X), _AE(X), _AF(X), | |
433 | _B0(X), _B1(X), _B2(X), _B3(X), _B4(X), _B5(X), _B6(X), _B7(X), | |
434 | _B8(X), _B9(X), _BA(X), _BB(X), _BC(X), _BD(X), _BE(X), _BF(X), | |
435 | _C0(X), _C1(X), _C2(X), _C3(X), _C4(X), _C5(X), _C6(X), _C7(X), | |
436 | _C8(X), _C9(X), _CA(X), _CB(X), _CC(X), _CD(X), _CE(X), _CF(X), | |
437 | _D0(X), _D1(X), _D2(X), _D3(X), _D4(X), _D5(X), _D6(X), _D7(X), | |
438 | _D8(X), _D9(X), _DA(X), _DB(X), _DC(X), _DD(X), _DE(X), _DF(X), | |
439 | _E0(X), _E1(X), _E2(X), _E3(X), _E4(X), _E5(X), _E6(X), _E7(X), | |
440 | _E8(X), _E9(X), _EA(X), _EB(X), _EC(X), _ED(X), _EE(X), _EF(X), | |
441 | _F0(X), _F1(X), _F2(X), _F3(X), _F4(X), _F5(X), _F6(X), _F7(X), | |
442 | _F8(X), _F9(X), _FA(X), _FB(X), _FC(X), _FD(X), _FE(X), _FF(X), | |
443 | ||
444 | V3, | |
445 | V4, | |
446 | } | |
447 | ||
448 | fn check_niche_behavior () { | |
449 | if let E1::V2 { .. } = (E1::V1 { f: true }) { | |
450 | intrinsics::abort(); | |
451 | } | |
452 | ||
453 | if let E2::V1 { .. } = E2::V3::<Infallible> { | |
454 | intrinsics::abort(); | |
455 | } | |
456 | } | |
457 | ||
458 | fn from_decimal_string() { | |
459 | loop { | |
460 | let multiplier = 1; | |
461 | ||
462 | take_multiplier_ref(&multiplier); | |
463 | ||
464 | if multiplier == 1 { | |
465 | break; | |
466 | } | |
467 | ||
468 | unreachable(); | |
469 | } | |
470 | } | |
471 | ||
472 | fn take_multiplier_ref(_multiplier: &u128) {} | |
473 | ||
474 | fn unreachable() -> ! { | |
475 | panic("unreachable") | |
476 | } |