error[E0277]: the size for values of type `[u8]` cannot be known at compilation time --> $DIR/offset-of-dst-field.rs:36:5 | LL | offset_of!(Alpha, z); | ^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `[u8]` = note: this error originates in the macro `offset_of` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `(dyn Trait + 'static)` cannot be known at compilation time --> $DIR/offset-of-dst-field.rs:37:5 | LL | offset_of!(Beta, z); | ^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `(dyn Trait + 'static)` = note: this error originates in the macro `offset_of` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `Extern` cannot be known at compilation time --> $DIR/offset-of-dst-field.rs:38:5 | LL | offset_of!(Gamma, z); | ^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `Extern` = note: this error originates in the macro `offset_of` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `dyn Trait` cannot be known at compilation time --> $DIR/offset-of-dst-field.rs:40:5 | LL | offset_of!((u8, dyn Trait), 1); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `dyn Trait` = note: this error originates in the macro `offset_of` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `Extern` cannot be known at compilation time --> $DIR/offset-of-dst-field.rs:45:5 | LL | offset_of!(Delta, z); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `Extern` = note: this error originates in the macro `offset_of` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `dyn Trait` cannot be known at compilation time --> $DIR/offset-of-dst-field.rs:46:5 | LL | offset_of!(Delta, z); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `dyn Trait` = note: this error originates in the macro `offset_of` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `[u8]` cannot be known at compilation time --> $DIR/offset-of-dst-field.rs:44:5 | LL | offset_of!(Delta, z); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = help: within `Alpha`, the trait `Sized` is not implemented for `[u8]` note: required because it appears within the type `Alpha` --> $DIR/offset-of-dst-field.rs:5:8 | LL | struct Alpha { | ^^^^^ = note: this error originates in the macro `offset_of` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0277]: the size for values of type `T` cannot be known at compilation time --> $DIR/offset-of-dst-field.rs:50:5 | LL | fn generic_with_maybe_sized() -> usize { | - this type parameter needs to be `Sized` LL | offset_of!(Delta, z) | ^^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time | = note: this error originates in the macro `offset_of` (in Nightly builds, run with -Z macro-backtrace for more info) help: consider removing the `?Sized` bound to make the type parameter `Sized` | LL - fn generic_with_maybe_sized() -> usize { LL + fn generic_with_maybe_sized() -> usize { | error[E0277]: the size for values of type `[u8]` cannot be known at compilation time --> $DIR/offset-of-dst-field.rs:54:16 | LL | offset_of!(([u8], u8), 1); | ^^^^^^^^^^ doesn't have a size known at compile-time | = help: the trait `Sized` is not implemented for `[u8]` = note: only the last element of a tuple may have a dynamically sized type error: aborting due to 9 previous errors For more information about this error, try `rustc --explain E0277`.