diff options
Diffstat (limited to 'tests/ui/const-generics/const-argument-if-length.min.stderr')
| -rw-r--r-- | tests/ui/const-generics/const-argument-if-length.min.stderr | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/tests/ui/const-generics/const-argument-if-length.min.stderr b/tests/ui/const-generics/const-argument-if-length.min.stderr new file mode 100644 index 000000000..f85e60f63 --- /dev/null +++ b/tests/ui/const-generics/const-argument-if-length.min.stderr @@ -0,0 +1,36 @@ +error: generic parameters may not be used in const operations + --> $DIR/const-argument-if-length.rs:17:24 + | +LL | pad: [u8; is_zst::<T>()], + | ^ cannot perform const operation using `T` + | + = note: type parameters may not be used in const expressions + = help: use `#![feature(generic_const_exprs)]` to allow generic const expressions + +error[E0277]: the size for values of type `T` cannot be known at compilation time + --> $DIR/const-argument-if-length.rs:15:12 + | +LL | pub struct AtLeastByte<T: ?Sized> { + | - this type parameter needs to be `std::marker::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: consider removing the `?Sized` bound to make the type parameter `Sized` + | +LL - pub struct AtLeastByte<T: ?Sized> { +LL + pub struct AtLeastByte<T> { + | +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 2 previous errors + +For more information about this error, try `rustc --explain E0277`. |