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