error[E0589]: invalid `repr(align)` attribute: not an unsuffixed integer
  --> $DIR/repr-align.rs:12:8
   |
LL | #[repr(align(16.0))] //~ ERROR: invalid `repr(align)` attribute: not an unsuffixed integer
   |        ^^^^^^^^^^^

error[E0589]: invalid `repr(align)` attribute: not a power of two
  --> $DIR/repr-align.rs:15:8
   |
LL | #[repr(align(15))] //~ ERROR: invalid `repr(align)` attribute: not a power of two
   |        ^^^^^^^^^

error[E0589]: invalid `repr(align)` attribute: larger than 2^29
  --> $DIR/repr-align.rs:18:8
   |
LL | #[repr(align(4294967296))] //~ ERROR: invalid `repr(align)` attribute: larger than 2^29
   |        ^^^^^^^^^^^^^^^^^

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0589`.