error[E0080]: evaluation of constant value failed --> $DIR/union-const-eval-field.rs:26:37 | LL | const FIELD3: Field3 = unsafe { UNION.field3 }; | ^^^^^^^^^^^^ using uninitialized data, but this operation requires initialized memory note: erroneous constant encountered --> $DIR/union-const-eval-field.rs:29:5 | LL | FIELD3 | ^^^^^^ note: erroneous constant encountered --> $DIR/union-const-eval-field.rs:29:5 | LL | FIELD3 | ^^^^^^ | = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0080`.