rust/src/test/ui/issues/issue-43105.stderr

error[E0015]: calls in constants are limited to constant functions, tuple structs and tuple variants
  --> $DIR/issue-43105.rs:13:17
   |
LL | const NUM: u8 = xyz();
   |                 ^^^^^

error: any use of this value will cause an error
  --> $DIR/issue-43105.rs:13:1
   |
LL | const NUM: u8 = xyz();
   | ^^^^^^^^^^^^^^^^-----^
   |                 |
   |                 calling non-const function `xyz`
   |
   = note: #[deny(const_err)] on by default

error: could not evaluate constant pattern
  --> $DIR/issue-43105.rs:19:9
   |
LL |         NUM => unimplemented!(),
   |         ^^^

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0015`.