| error[E0277]: the size for values of type `T` cannot be known at compilation time |
| --> $DIR/const-argument-if-length.rs:8:28 |
| | |
| LL | pub const fn is_zst<T: ?Sized>() -> usize { |
| | - this type parameter needs to be `Sized` |
| LL | if std::mem::size_of::<T>() == 0 { |
| | ^ doesn't have a size known at compile-time |
| | |
| ::: $SRC_DIR/core/src/mem/mod.rs:LL:COL |
| | |
| LL | pub const fn size_of<T>() -> usize { |
| | - required by this bound in `std::mem::size_of` |
| |
| error[E0080]: evaluation of constant value failed |
| --> $DIR/const-argument-if-length.rs:19:15 |
| | |
| LL | pad: [u8; is_zst::<T>()], |
| | ^^^^^^^^^^^^^ referenced constant has errors |
| |
| error[E0277]: the size for values of type `T` cannot be known at compilation time |
| --> $DIR/const-argument-if-length.rs:17:12 |
| | |
| LL | pub struct AtLeastByte<T: ?Sized> { |
| | - this type parameter needs to be `Sized` |
| LL | value: T, |
| | ^ doesn't have a size known at compile-time |
| | |
| = note: only the last field of a struct may have a dynamically sized type |
| = help: change the field's type to have a statically known size |
| help: borrowed types always have a statically known size |
| | |
| LL | value: &T, |
| | ^ |
| help: the `Box` type always has a statically known size and allocates its contents in the heap |
| | |
| LL | value: Box<T>, |
| | ^^^^ ^ |
| |
| error: aborting due to 3 previous errors |
| |
| Some errors have detailed explanations: E0080, E0277. |
| For more information about an error, try `rustc --explain E0080`. |