syntax_data: {"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"//!"}]}
source_snippet: //! introducing these calls *adds* UB -- so, conceptually, this pass is actually part
context_before: //! It has to be run really early, before transformations like inlining, because
context_after: //! of MIR building, and only after this pass we think of the program has having the