-static std::vector<block_symbol> *find_label_symbols
- (struct linespec_state *self, std::vector<block_symbol> *function_symbols,
- std::vector<block_symbol> *label_funcs_ret, const char *name,
- bool completion_mode = false);
+static std::vector<block_symbol> find_label_symbols
+ (struct linespec_state *self,
+ const std::vector<block_symbol> &function_symbols,
+ std::vector<block_symbol> *label_funcs_ret,
+ const char *name, bool completion_mode = false);