| error[E0744]: `while` is not allowed in a `const` |
| --> $DIR/infinite_loop.rs:7:9 |
| | |
| LL | / while n != 0 { |
| LL | | |
| LL | | n = if n % 2 == 0 { n/2 } else { 3*n + 1 }; |
| LL | | |
| LL | | |
| LL | | } |
| | |_________^ |
| |
| error[E0658]: `if` is not allowed in a `const` |
| --> $DIR/infinite_loop.rs:9:17 |
| | |
| LL | n = if n % 2 == 0 { n/2 } else { 3*n + 1 }; |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| | |
| = note: for more information, see https://github.com/rust-lang/rust/issues/49146 |
| = help: add `#![feature(const_if_match)]` to the crate attributes to enable |
| |
| warning: Constant evaluating a complex constant, this might take some time |
| --> $DIR/infinite_loop.rs:4:18 |
| | |
| LL | let _ = [(); { |
| | __________________^ |
| LL | | |
| LL | | let mut n = 113383; // #20 in https://oeis.org/A006884 |
| LL | | while n != 0 { |
| ... | |
| LL | | n |
| LL | | }]; |
| | |_____^ |
| |
| error[E0080]: evaluation of constant value failed |
| --> $DIR/infinite_loop.rs:9:20 |
| | |
| LL | n = if n % 2 == 0 { n/2 } else { 3*n + 1 }; |
| | ^^^^^^^^^^ duplicate interpreter state observed here, const evaluation will never terminate |
| |
| error: aborting due to 3 previous errors |
| |
| Some errors have detailed explanations: E0080, E0658, E0744. |
| For more information about an error, try `rustc --explain E0080`. |
