error[E0080]: evaluation of constant value failed --> $DIR/issue-64506.rs:16:22 | LL | let x = unsafe { Foo { b: () }.a }; | ^^^^^^^^^^^^^^^ constructing invalid value at .inner: encountered a value of uninhabited type `AnonPipe` error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0080`.