error[E0277]: the trait bound `std::fmt::Debug + std::marker::Sync + 'static: std::marker::Sized` is not satisfied --> $DIR/const-unsized.rs:13:29 | LL | const CONST_0: Debug+Sync = *(&0 as &(Debug+Sync)); | ^^^^^^^^^^^^^^^^^^^^^^ `std::fmt::Debug + std::marker::Sync + 'static` does not have a constant size known at compile-time | = help: the trait `std::marker::Sized` is not implemented for `std::fmt::Debug + std::marker::Sync + 'static` = note: constant expressions must have a statically known size error[E0277]: the trait bound `str: std::marker::Sized` is not satisfied --> $DIR/const-unsized.rs:16:24 | LL | const CONST_FOO: str = *"foo"; | ^^^^^^ `str` does not have a constant size known at compile-time | = help: the trait `std::marker::Sized` is not implemented for `str` = note: constant expressions must have a statically known size error[E0277]: the trait bound `std::fmt::Debug + std::marker::Sync + 'static: std::marker::Sized` is not satisfied --> $DIR/const-unsized.rs:19:31 | LL | static STATIC_1: Debug+Sync = *(&1 as &(Debug+Sync)); | ^^^^^^^^^^^^^^^^^^^^^^ `std::fmt::Debug + std::marker::Sync + 'static` does not have a constant size known at compile-time | = help: the trait `std::marker::Sized` is not implemented for `std::fmt::Debug + std::marker::Sync + 'static` = note: constant expressions must have a statically known size error[E0277]: the trait bound `str: std::marker::Sized` is not satisfied --> $DIR/const-unsized.rs:22:26 | LL | static STATIC_BAR: str = *"bar"; | ^^^^^^ `str` does not have a constant size known at compile-time | = help: the trait `std::marker::Sized` is not implemented for `str` = note: constant expressions must have a statically known size error: aborting due to 4 previous errors For more information about this error, try `rustc --explain E0277`.