[WIP]

Author: bjorn3

example/mini_core.rs

@@ -538,3 +538,11 @@ pub macro line() { /* compiler built-in */ }
 pub macro cfg() { /* compiler built-in */ }
 
 pub static A_STATIC: u8 = 42;
+
+
+#[lang = "panic_location"]
+struct PanicLocation {
+    file: &'static str,
+    line: u32,
+    column: u32,
+}

example/mini_core_hello_world.rs

@@ -136,211 +136,4 @@ fn main() {
 
     let slice = &[0, 1] as &[i32];
     let slice_ptr = slice as *const [i32] as *const i32;
-
-    assert_eq!(slice_ptr as usize % 4, 0);
-
-    //return;
-
-    unsafe {
-        printf("Hello %s\n\0" as *const str as *const i8, "printf\0" as *const str as *const i8);
-
-        let hello: &[u8] = b"Hello\0" as &[u8; 6];
-        let ptr: *const u8 = hello as *const [u8] as *const u8;
-        puts(ptr);
-
-        let world: Box<&str> = box "World!\0";
-        puts(*world as *const str as *const u8);
-        world as Box<dyn SomeTrait>;
-
-        assert_eq!(intrinsics::bitreverse(0b10101000u8), 0b00010101u8);
-
-        assert_eq!(intrinsics::bswap(0xabu8), 0xabu8);
-        assert_eq!(intrinsics::bswap(0xddccu16), 0xccddu16);
-        assert_eq!(intrinsics::bswap(0xffee_ddccu32), 0xccdd_eeffu32);
-        assert_eq!(intrinsics::bswap(0x1234_5678_ffee_ddccu64), 0xccdd_eeff_7856_3412u64);
-
-        assert_eq!(intrinsics::size_of_val(hello) as u8, 6);
-
-        let chars = &['C', 'h', 'a', 'r', 's'];
-        let chars = chars as &[char];
-        assert_eq!(intrinsics::size_of_val(chars) as u8, 4 * 5);
-
-        let a: &dyn SomeTrait = &"abc\0";
-        a.object_safe();
-
-        assert_eq!(intrinsics::size_of_val(a) as u8, 16);
-        assert_eq!(intrinsics::size_of_val(&0u32) as u8, 4);
-
-        assert_eq!(intrinsics::min_align_of::<u16>() as u8, 2);
-        assert_eq!(intrinsics::min_align_of_val(&a) as u8, intrinsics::min_align_of::<&str>() as u8);
-
-        assert!(!intrinsics::needs_drop::<u8>());
-        assert!(intrinsics::needs_drop::<NoisyDrop>());
-
-        Unique {
-            pointer: 0 as *const &str,
-            _marker: PhantomData,
-        } as Unique<dyn SomeTrait>;
-
-        struct MyDst<T: ?Sized>(T);
-
-        intrinsics::size_of_val(&MyDst([0u8; 4]) as &MyDst<[u8]>);
-
-        struct Foo {
-            x: u8,
-            y: !,
-        }
-
-        unsafe fn zeroed<T>() -> T {
-            intrinsics::init::<T>()
-        }
-
-        unsafe fn uninitialized<T>() -> T {
-            MaybeUninit { uninit: () }.value.value
-        }
-
-        zeroed::<(u8, u8)>();
-        #[allow(unreachable_code)]
-        {
-            if false {
-                zeroed::<!>();
-                zeroed::<Foo>();
-                uninitialized::<Foo>();
-            }
-        }
-    }
-
-    let _ = box NoisyDrop {
-        text: "Boxed outer got dropped!\0",
-        inner: NoisyDropInner,
-    } as Box<dyn SomeTrait>;
-
-    const FUNC_REF: Option<fn()> = Some(main);
-    match FUNC_REF {
-        Some(_) => {},
-        None => assert!(false),
-    }
-
-    match Ordering::Less {
-        Ordering::Less => {},
-        _ => assert!(false),
-    }
-
-    [NoisyDropInner, NoisyDropInner];
-
-    let x = &[0u32, 42u32] as &[u32];
-    match x {
-        [] => assert_eq!(0u32, 1),
-        [_, ref y @ ..] => assert_eq!(&x[1] as *const u32 as usize, &y[0] as *const u32 as usize),
-    }
-
-    assert_eq!(((|()| 42u8) as fn(()) -> u8)(()), 42);
-
-    extern {
-        #[linkage = "weak"]
-        static ABC: *const u8;
-    }
-
-    {
-        extern {
-            #[linkage = "weak"]
-            static ABC: *const u8;
-        }
-    }
-
-    unsafe { assert_eq!(ABC as usize, 0); }
-
-    &mut (|| Some(0 as *const ())) as &mut dyn FnMut() -> Option<*const ()>;
-
-    let f = 1000.0;
-    assert_eq!(f as u8, 255);
-    let f2 = -1000.0;
-    assert_eq!(f2 as i8, -128);
-    assert_eq!(f2 as u8, 0);
-
-    static ANOTHER_STATIC: &u8 = &A_STATIC;
-    assert_eq!(*ANOTHER_STATIC, 42);
-
-    check_niche_behavior();
-
-    extern "C" {
-        type ExternType;
-    }
-
-    struct ExternTypeWrapper {
-        _a: ExternType,
-    }
-
-    let nullptr = 0 as *const ();
-    let extern_nullptr = nullptr as *const ExternTypeWrapper;
-    extern_nullptr as *const ();
-    let slice_ptr = &[] as *const [u8];
-    slice_ptr as *const u8;
-}
-
-// Copied ui/issues/issue-61696.rs
-
-pub enum Infallible {}
-
-// The check that the `bool` field of `V1` is encoding a "niche variant"
-// (i.e. not `V1`, so `V3` or `V4`) used to be mathematically incorrect,
-// causing valid `V1` values to be interpreted as other variants.
-pub enum E1 {
-    V1 { f: bool },
-    V2 { f: Infallible },
-    V3,
-    V4,
-}
-
-// Computing the discriminant used to be done using the niche type (here `u8`,
-// from the `bool` field of `V1`), overflowing for variants with large enough
-// indices (`V3` and `V4`), causing them to be interpreted as other variants.
-pub enum E2<X> {
-    V1 { f: bool },
-
-    /*_00*/ _01(X), _02(X), _03(X), _04(X), _05(X), _06(X), _07(X),
-    _08(X), _09(X), _0A(X), _0B(X), _0C(X), _0D(X), _0E(X), _0F(X),
-    _10(X), _11(X), _12(X), _13(X), _14(X), _15(X), _16(X), _17(X),
-    _18(X), _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 }) {
-        unsafe { intrinsics::abort(); }
-    }
-
-    if let E2::V1 { .. } = E2::V3::<Infallible> {
-        unsafe { intrinsics::abort(); }
-    }
 }

test.sh

@@ -31,11 +31,13 @@ $RUSTC example/mini_core.rs --crate-name mini_core --crate-type lib,dylib
 echo "[BUILD] example"
 $RUSTC example/example.rs --crate-type lib
 
-JIT_ARGS="abc bcd" jit mini_core_hello_world example/mini_core_hello_world.rs
+#JIT_ARGS="abc bcd" jit mini_core_hello_world example/mini_core_hello_world.rs
 
 echo "[AOT] mini_core_hello_world"
-$RUSTC example/mini_core_hello_world.rs --crate-name mini_core_hello_world --crate-type bin
-./target/out/mini_core_hello_world abc bcd
+$RUSTC example/mini_core_hello_world.rs --crate-name mini_core_hello_world --crate-type bin -g
+(echo "break set -n main"; echo "run"; sleep 1; echo "si -c 21"; sleep 1; echo "frame variable") | lldb -- ./target/out/mini_core_hello_world abc bcd
+
+exit 1
 
 echo "[AOT] arbitrary_self_types_pointers_and_wrappers"
 $RUSTC example/arbitrary_self_types_pointers_and_wrappers.rs --crate-name arbitrary_self_types_pointers_and_wrappers --crate-type bin