syntax_data: {"ast_node_type":"other","tokens":[{"end":38,"kind":"keyword","start":0,"text":"opts.max_atomic_width"}]}
source_snippet:     opts.max_atomic_width = Some(128);
context_before:     let (mut opts, llvm_target, arch) = base("macos", Arch::X86_64h, TargetAbi::Normal);
context_after:     opts.supported_sanitizers =