syntax_data: {"ast_node_type":"other","tokens":[{"end":37,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // very specific case of #140944.
context_before:     // Only doing this sanity check when debug assertions are turned on avoids the issue for the
context_after:     if layout.ty.is_privately_uninhabited(tcx, cx.typing_env) {