Assert directive referencing an element of a tuple struct

[faro-dr]

The following was working in version 0.11.2:

use binrw::binrw;

#[binrw]
#[bw(assert(self.0 > 0))]
pub struct u24(pub u32);

But fails in version 0.12.0 with:

error[E0425]: cannot find value `__binrw_this` in this scope
 --> src/main.rs:4:13
  |
4 | #[bw(assert(self.0 > 0))]
  |             ^^^^ not found in this scope

How can I refer to the elements of a tuple struct in an assert directive (if at all)? Thank you.

[csnover]

You can access tuple fields by the variable self_N, where N is the number of the field. However, it should be possible to also use self at the top level, so I have opened #232 to track this.

[faro-dr]

Thanks, that's a reasonable workaround.