syntax_data: {"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if sess.opts.unstable_opts.virtual_function_elimination {
context_before:     if sess.lto() != config::Lto::Fat {
context_after:             sess.dcx().emit_err(errors::UnstableVirtualFunctionElimination);