syntax_data: {"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"base.supported_sanitizers"}]}
source_snippet:     base.supported_sanitizers = SanitizerSet::ADDRESS;
context_before:     base.has_thread_local = false;
context_after:     // This is for backward compatibility, see https://github.com/rust-lang/rust/issues/49867