syntax_data: {"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // https://llvm.org/bugs/show_bug.cgi?id=30879
context_before:     // This may or may not be related to this bug:
context_after:     base.frame_pointer = FramePointer::Always;