syntax_data: {"ast_node_type":"function","tokens":[{"end":43,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub fn LLVMCantFail(Err: LLVMErrorRef);
context_before:     /// known that the Error will always be a success value.
context_after:     pub fn LLVMGetErrorMessage(Err: LLVMErrorRef) -> *mut ::libc::c_char;