1 error[E0391]: cycle detected when const-evaluating + checking `X::A::{constant#0}`
2 --> $DIR/issue-23302-1.rs:4:9
4 LL | A = X::A as isize,
7 = note: ...which immediately requires const-evaluating + checking `X::A::{constant#0}` again
8 note: cycle used when simplifying constant for the type system `X::A::{constant#0}`
9 --> $DIR/issue-23302-1.rs:4:9
11 LL | A = X::A as isize,
14 error: aborting due to previous error
16 For more information about this error, try `rustc --explain E0391`.