{"ast_node_type":"other","tokens":[{"end":68,"kind":"keyword","start":0,"text":"Use"}]}
Use `loop {}` for the body or call the intrinsic recursively and add
These are written like intrinsics with fallback bodies, but the body is irrelevant.
`#[rustc_intrinsic_must_be_overridden]` to the function to ensure that backends don't