121 lines
2.4 KiB
Rust
121 lines
2.4 KiB
Rust
// run-pass
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use std::fmt;
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use std::mem;
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#[repr(packed)]
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#[derive(Copy, Clone)]
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struct Foo1 {
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bar: u8,
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baz: u64
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}
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impl PartialEq for Foo1 {
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fn eq(&self, other: &Foo1) -> bool {
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self.bar == other.bar && self.baz == other.baz
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}
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}
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impl fmt::Debug for Foo1 {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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let bar = self.bar;
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let baz = self.baz;
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f.debug_struct("Foo1")
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.field("bar", &bar)
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.field("baz", &baz)
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.finish()
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}
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}
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#[repr(packed(2))]
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#[derive(Copy, Clone)]
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struct Foo2 {
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bar: u8,
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baz: u64
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}
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impl PartialEq for Foo2 {
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fn eq(&self, other: &Foo2) -> bool {
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self.bar == other.bar && self.baz == other.baz
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}
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}
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impl fmt::Debug for Foo2 {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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let bar = self.bar;
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let baz = self.baz;
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f.debug_struct("Foo2")
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.field("bar", &bar)
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.field("baz", &baz)
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.finish()
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}
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}
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#[repr(C, packed(4))]
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#[derive(Copy, Clone)]
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struct Foo4C {
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bar: u8,
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baz: u64
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}
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impl PartialEq for Foo4C {
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fn eq(&self, other: &Foo4C) -> bool {
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self.bar == other.bar && self.baz == other.baz
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}
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}
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impl fmt::Debug for Foo4C {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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let bar = self.bar;
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let baz = self.baz;
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f.debug_struct("Foo4C")
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.field("bar", &bar)
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.field("baz", &baz)
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.finish()
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}
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}
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pub fn main() {
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let foo1s = [Foo1 { bar: 1, baz: 2 }; 10];
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assert_eq!(mem::align_of::<[Foo1; 10]>(), 1);
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assert_eq!(mem::size_of::<[Foo1; 10]>(), 90);
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for i in 0..10 {
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assert_eq!(foo1s[i], Foo1 { bar: 1, baz: 2});
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}
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for &foo in &foo1s {
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assert_eq!(foo, Foo1 { bar: 1, baz: 2 });
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}
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let foo2s = [Foo2 { bar: 1, baz: 2 }; 10];
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assert_eq!(mem::align_of::<[Foo2; 10]>(), 2);
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assert_eq!(mem::size_of::<[Foo2; 10]>(), 100);
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for i in 0..10 {
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assert_eq!(foo2s[i], Foo2 { bar: 1, baz: 2});
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}
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for &foo in &foo2s {
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assert_eq!(foo, Foo2 { bar: 1, baz: 2 });
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}
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let foo4s = [Foo4C { bar: 1, baz: 2 }; 10];
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assert_eq!(mem::align_of::<[Foo4C; 10]>(), 4);
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assert_eq!(mem::size_of::<[Foo4C; 10]>(), 120);
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for i in 0..10 {
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assert_eq!(foo4s[i], Foo4C { bar: 1, baz: 2});
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}
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for &foo in &foo4s {
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assert_eq!(foo, Foo4C { bar: 1, baz: 2 });
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}
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}
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