about summary refs log tree commit diff
path: root/src/test/ui/structs-enums/align-struct.rs
diff options
context:
space:
mode:
Diffstat (limited to 'src/test/ui/structs-enums/align-struct.rs')
-rw-r--r--src/test/ui/structs-enums/align-struct.rs244
1 files changed, 0 insertions, 244 deletions
diff --git a/src/test/ui/structs-enums/align-struct.rs b/src/test/ui/structs-enums/align-struct.rs
deleted file mode 100644
index f5418e754b2..00000000000
--- a/src/test/ui/structs-enums/align-struct.rs
+++ /dev/null
@@ -1,244 +0,0 @@
-// run-pass
-#![allow(dead_code)]
-
-use std::mem;
-
-// Raising alignment
-#[repr(align(16))]
-#[derive(Clone, Copy, Debug)]
-struct Align16(i32);
-
-// Lowering has no effect
-#[repr(align(1))]
-struct Align1(i32);
-
-// Multiple attributes take the max
-#[repr(align(4))]
-#[repr(align(16))]
-#[repr(align(8))]
-struct AlignMany(i32);
-
-// Raising alignment may not alter size.
-#[repr(align(8))]
-#[allow(dead_code)]
-struct Align8Many {
-    a: i32,
-    b: i32,
-    c: i32,
-    d: u8,
-}
-
-enum Enum {
-    #[allow(dead_code)]
-    A(i32),
-    B(Align16)
-}
-
-// Nested alignment - use `#[repr(C)]` to suppress field reordering for sizeof test
-#[repr(C)]
-struct Nested {
-    a: i32,
-    b: i32,
-    c: Align16,
-    d: i8,
-}
-
-#[repr(packed)]
-struct Packed(i32);
-
-#[repr(align(16))]
-struct AlignContainsPacked {
-    a: Packed,
-    b: Packed,
-}
-
-#[repr(C, packed(4))]
-struct Packed4C {
-    a: u32,
-    b: u64,
-}
-
-#[repr(align(16))]
-struct AlignContainsPacked4C {
-    a: Packed4C,
-    b: u64,
-}
-
-// The align limit was originally smaller (2^15).
-// Check that it works with big numbers.
-#[repr(align(0x10000))]
-struct AlignLarge {
-    stuff: [u8; 0x10000],
-}
-
-union UnionContainsAlign {
-    a: Align16,
-    b: f32
-}
-
-impl Align16 {
-    // return aligned type
-    pub fn new(i: i32) -> Align16 {
-        Align16(i)
-    }
-    // pass aligned type
-    pub fn consume(a: Align16) -> i32 {
-        a.0
-    }
-}
-
-const CONST_ALIGN16: Align16 = Align16(7);
-static STATIC_ALIGN16: Align16 = Align16(8);
-
-// Check the actual address is aligned
-fn is_aligned_to<T>(p: &T, align: usize) -> bool {
-    let addr = p as *const T as usize;
-    (addr & (align - 1)) == 0
-}
-
-pub fn main() {
-    // check alignment and size by type and value
-    assert_eq!(mem::align_of::<Align16>(), 16);
-    assert_eq!(mem::size_of::<Align16>(), 16);
-
-    let a = Align16(7);
-    assert_eq!(a.0, 7);
-    assert_eq!(mem::align_of_val(&a), 16);
-    assert_eq!(mem::size_of_val(&a), 16);
-
-    assert!(is_aligned_to(&a, 16));
-
-    // lowering should have no effect
-    assert_eq!(mem::align_of::<Align1>(), 4);
-    assert_eq!(mem::size_of::<Align1>(), 4);
-    let a = Align1(7);
-    assert_eq!(a.0, 7);
-    assert_eq!(mem::align_of_val(&a), 4);
-    assert_eq!(mem::size_of_val(&a), 4);
-    assert!(is_aligned_to(&a, 4));
-
-    // when multiple attributes are specified the max should be used
-    assert_eq!(mem::align_of::<AlignMany>(), 16);
-    assert_eq!(mem::size_of::<AlignMany>(), 16);
-    let a = AlignMany(7);
-    assert_eq!(a.0, 7);
-    assert_eq!(mem::align_of_val(&a), 16);
-    assert_eq!(mem::size_of_val(&a), 16);
-    assert!(is_aligned_to(&a, 16));
-
-    // raising alignment should not reduce size
-    assert_eq!(mem::align_of::<Align8Many>(), 8);
-    assert_eq!(mem::size_of::<Align8Many>(), 16);
-    let a = Align8Many { a: 1, b: 2, c: 3, d: 4 };
-    assert_eq!(a.a, 1);
-    assert_eq!(mem::align_of_val(&a), 8);
-    assert_eq!(mem::size_of_val(&a), 16);
-    assert!(is_aligned_to(&a, 8));
-
-    // return type
-    let a = Align16::new(1);
-    assert_eq!(mem::align_of_val(&a), 16);
-    assert_eq!(mem::size_of_val(&a), 16);
-    assert_eq!(a.0, 1);
-    assert!(is_aligned_to(&a, 16));
-    assert_eq!(Align16::consume(a), 1);
-
-    // check const alignment, size and value
-    assert_eq!(mem::align_of_val(&CONST_ALIGN16), 16);
-    assert_eq!(mem::size_of_val(&CONST_ALIGN16), 16);
-    assert_eq!(CONST_ALIGN16.0, 7);
-    assert!(is_aligned_to(&CONST_ALIGN16, 16));
-
-    // check global static alignment, size and value
-    assert_eq!(mem::align_of_val(&STATIC_ALIGN16), 16);
-    assert_eq!(mem::size_of_val(&STATIC_ALIGN16), 16);
-    assert_eq!(STATIC_ALIGN16.0, 8);
-    assert!(is_aligned_to(&STATIC_ALIGN16, 16));
-
-    // Note that the size of Nested may change if struct field re-ordering is enabled
-    assert_eq!(mem::align_of::<Nested>(), 16);
-    assert_eq!(mem::size_of::<Nested>(), 48);
-    let a = Nested{ a: 1, b: 2, c: Align16(3), d: 4};
-    assert_eq!(mem::align_of_val(&a), 16);
-    assert_eq!(mem::align_of_val(&a.b), 4);
-    assert_eq!(mem::align_of_val(&a.c), 16);
-    assert_eq!(mem::size_of_val(&a), 48);
-    assert!(is_aligned_to(&a, 16));
-    // check the correct fields are indexed
-    assert_eq!(a.a, 1);
-    assert_eq!(a.b, 2);
-    assert_eq!(a.c.0, 3);
-    assert_eq!(a.d, 4);
-
-    // enum should be aligned to max alignment
-    assert_eq!(mem::align_of::<Enum>(), 16);
-    assert_eq!(mem::align_of_val(&Enum::B(Align16(0))), 16);
-    let e = Enum::B(Align16(15));
-    match e {
-        Enum::B(ref a) => {
-            assert_eq!(a.0, 15);
-            assert_eq!(mem::align_of_val(a), 16);
-            assert_eq!(mem::size_of_val(a), 16);
-        },
-        _ => ()
-    }
-    assert!(is_aligned_to(&e, 16));
-
-    // check union alignment
-    assert_eq!(mem::align_of::<UnionContainsAlign>(), 16);
-    assert_eq!(mem::size_of::<UnionContainsAlign>(), 16);
-    let u = UnionContainsAlign { a: Align16(10) };
-    unsafe {
-        assert_eq!(mem::align_of_val(&u.a), 16);
-        assert_eq!(mem::size_of_val(&u.a), 16);
-        assert_eq!(u.a.0, 10);
-        let UnionContainsAlign { a } = u;
-        assert_eq!(a.0, 10);
-    }
-
-    // arrays of aligned elements should also be aligned
-    assert_eq!(mem::align_of::<[Align16;2]>(), 16);
-    assert_eq!(mem::size_of::<[Align16;2]>(), 32);
-
-    let a = [Align16(0), Align16(1)];
-    assert_eq!(mem::align_of_val(&a[0]), 16);
-    assert_eq!(mem::align_of_val(&a[1]), 16);
-    assert!(is_aligned_to(&a, 16));
-
-    // check heap value is aligned
-    assert_eq!(mem::align_of_val(Box::new(Align16(0)).as_ref()), 16);
-
-    // check heap array is aligned
-    let a = vec!(Align16(0), Align16(1));
-    assert_eq!(mem::align_of_val(&a[0]), 16);
-    assert_eq!(mem::align_of_val(&a[1]), 16);
-
-    assert_eq!(mem::align_of::<AlignContainsPacked>(), 16);
-    assert_eq!(mem::size_of::<AlignContainsPacked>(), 16);
-    let a = AlignContainsPacked { a: Packed(1), b: Packed(2) };
-    assert_eq!(mem::align_of_val(&a), 16);
-    assert_eq!(mem::align_of_val(&a.a), 1);
-    assert_eq!(mem::align_of_val(&a.b), 1);
-    assert_eq!(mem::size_of_val(&a), 16);
-    assert!(is_aligned_to(&a, 16));
-
-    assert_eq!(mem::align_of::<AlignContainsPacked4C>(), 16);
-    assert_eq!(mem::size_of::<AlignContainsPacked4C>(), 32);
-    let a = AlignContainsPacked4C { a: Packed4C{ a: 1, b: 2 }, b: 3 };
-    assert_eq!(mem::align_of_val(&a), 16);
-    assert_eq!(mem::align_of_val(&a.a), 4);
-    assert_eq!(mem::align_of_val(&a.b), mem::align_of::<u64>());
-    assert_eq!(mem::size_of_val(&a), 32);
-    assert!(is_aligned_to(&a, 16));
-
-    let mut large = Box::new(AlignLarge {
-        stuff: [0; 0x10000],
-    });
-    large.stuff[0] = 132;
-    *large.stuff.last_mut().unwrap() = 102;
-    assert_eq!(large.stuff[0], 132);
-    assert_eq!(large.stuff.last(), Some(&102));
-    assert_eq!(mem::align_of::<AlignLarge>(), 0x10000);
-    assert_eq!(mem::align_of_val(&*large), 0x10000);
-    assert!(is_aligned_to(&*large, 0x10000));
-}