syntax_data: {"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// Determine whether a value instance is poisonous.
context_before:     pub fn LLVMIsUndef(Val: LLVMValueRef) -> LLVMBool;
context_after:     pub fn LLVMIsPoison(Val: LLVMValueRef) -> LLVMBool;