error[E0391]: cycle detected when simplifying constant for the type system `A`
  --> $DIR/issue-23302-3.rs:1:1
   |
LL | const A: i32 = B;
   | ^^^^^^^^^^^^^^^^^
   |
note: ...which requires simplifying constant for the type system `A`...
  --> $DIR/issue-23302-3.rs:1:1
   |
LL | const A: i32 = B;
   | ^^^^^^^^^^^^^^^^^
note: ...which requires const-evaluating + checking `A`...
  --> $DIR/issue-23302-3.rs:1:1
   |
LL | const A: i32 = B;
   | ^^^^^^^^^^^^^^^^^
   = note: ...which requires normalizing `B`...
note: ...which requires simplifying constant for the type system `B`...
  --> $DIR/issue-23302-3.rs:3:1
   |
LL | const B: i32 = A;
   | ^^^^^^^^^^^^^^^^^
note: ...which requires simplifying constant for the type system `B`...
  --> $DIR/issue-23302-3.rs:3:1
   |
LL | const B: i32 = A;
   | ^^^^^^^^^^^^^^^^^
note: ...which requires const-evaluating + checking `B`...
  --> $DIR/issue-23302-3.rs:3:1
   |
LL | const B: i32 = A;
   | ^^^^^^^^^^^^^^^^^
   = note: ...which requires normalizing `A`...
   = note: ...which again requires simplifying constant for the type system `A`, completing the cycle
   = note: cycle used when running analysis passes on this crate

error: aborting due to previous error

For more information about this error, try `rustc --explain E0391`.