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|
// Regression test for #121473
// Checks that no ICE occurs when `size_of`
// is applied to a struct that has an unsized
// field which is not its last field
use std::mem::size_of;
pub struct BadStruct {
pub field1: i32,
pub field2: str, // Unsized field that is not the last field
//~^ ERROR the size for values of type `str` cannot be known at compilation time
pub field3: [u8; 16],
}
enum BadEnum1 {
Variant1 {
field1: i32,
field2: str, // Unsized
//~^ ERROR the size for values of type `str` cannot be known at compilation time
field3: [u8; 16],
},
}
enum BadEnum2 {
Variant1(
i32,
str, // Unsized
//~^ ERROR the size for values of type `str` cannot be known at compilation time
[u8; 16]
),
}
enum BadEnumMultiVariant {
Variant1(i32),
Variant2 {
field1: i32,
field2: str, // Unsized
//~^ ERROR the size for values of type `str` cannot be known at compilation time
field3: [u8; 16],
},
Variant3
}
union BadUnion {
field1: i32,
field2: str, // Unsized
//~^ ERROR the size for values of type `str` cannot be known at compilation time
//~| ERROR field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
field3: [u8; 16],
}
// Used to test that projection type fields that normalize
// to a sized type do not cause problems
struct StructWithProjections<'a>
{
field1: <&'a [i32] as IntoIterator>::IntoIter,
field2: i32
}
pub fn main() {
let _a = &size_of::<BadStruct>();
assert_eq!(size_of::<BadStruct>(), 21);
let _a = &size_of::<BadEnum1>();
assert_eq!(size_of::<BadEnum1>(), 21);
let _a = &size_of::<BadEnum2>();
assert_eq!(size_of::<BadEnum2>(), 21);
let _a = &size_of::<BadEnumMultiVariant>();
assert_eq!(size_of::<BadEnumMultiVariant>(), 21);
let _a = &size_of::<BadUnion>();
assert_eq!(size_of::<BadUnion>(), 21);
let _a = &size_of::<StructWithProjections>();
assert_eq!(size_of::<StructWithProjections>(), 21);
let _a = StructWithProjections { field1: [1, 3].iter(), field2: 3 };
}
|
