error[E0080]: evaluation of constant value failed --> $DIR/detect-extra-ub.rs:8:20 | LL | let _x: bool = transmute(3u8); | ^^^^^^^^^^^^^^ constructing invalid value: encountered 0x03, but expected a boolean error[E0080]: evaluation of constant value failed --> $DIR/detect-extra-ub.rs:14:21 | LL | let _x: usize = transmute(&3u8); | ^^^^^^^^^^^^^^^ unable to turn pointer into raw bytes | = help: this code performed an operation that depends on the underlying bytes representing a pointer = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported error[E0080]: evaluation of constant value failed --> $DIR/detect-extra-ub.rs:20:30 | LL | let _x: (usize, usize) = transmute(x); | ^^^^^^^^^^^^ unable to turn pointer into raw bytes | = help: this code performed an operation that depends on the underlying bytes representing a pointer = help: the absolute address of a pointer is not known at compile-time, so such operations are not supported error[E0080]: evaluation of constant value failed --> $DIR/detect-extra-ub.rs:25:20 | LL | let _x: &u32 = transmute(&[0u8; 4]); | ^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered an unaligned reference (required 4 byte alignment but found 1) error: aborting due to 4 previous errors For more information about this error, try `rustc --explain E0080`.