error[E0391]: cycle detected when simplifying constant for the type system `DEFAULT_REF_BAR`
  --> $DIR/issue-24949-assoc-const-static-recursion-trait-default.rs:11:1
   |
LL | const DEFAULT_REF_BAR: u32 = <GlobalDefaultRef>::BAR;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: ...which requires simplifying constant for the type system `DEFAULT_REF_BAR`...
  --> $DIR/issue-24949-assoc-const-static-recursion-trait-default.rs:11:1
   |
LL | const DEFAULT_REF_BAR: u32 = <GlobalDefaultRef>::BAR;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: ...which requires const-evaluating + checking `DEFAULT_REF_BAR`...
  --> $DIR/issue-24949-assoc-const-static-recursion-trait-default.rs:11:1
   |
LL | const DEFAULT_REF_BAR: u32 = <GlobalDefaultRef>::BAR;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   = note: ...which requires normalizing `<GlobalDefaultRef as FooDefault>::BAR`...
note: ...which requires simplifying constant for the type system `FooDefault::BAR`...
  --> $DIR/issue-24949-assoc-const-static-recursion-trait-default.rs:8:5
   |
LL |     const BAR: u32 = DEFAULT_REF_BAR;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: ...which requires simplifying constant for the type system `FooDefault::BAR`...
  --> $DIR/issue-24949-assoc-const-static-recursion-trait-default.rs:8:5
   |
LL |     const BAR: u32 = DEFAULT_REF_BAR;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: ...which requires const-evaluating + checking `FooDefault::BAR`...
  --> $DIR/issue-24949-assoc-const-static-recursion-trait-default.rs:8:5
   |
LL |     const BAR: u32 = DEFAULT_REF_BAR;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: ...which requires caching mir of `FooDefault::BAR` for CTFE...
  --> $DIR/issue-24949-assoc-const-static-recursion-trait-default.rs:8:5
   |
LL |     const BAR: u32 = DEFAULT_REF_BAR;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   = note: ...which requires normalizing `DEFAULT_REF_BAR`...
   = note: ...which again requires simplifying constant for the type system `DEFAULT_REF_BAR`, 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`.