include/util.h


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#include <stdio.h>

#define print_err(fmt, ...)                                                    \
	fprintf(stderr, "[%s:%d] " fmt "\n", __FILE__, __LINE__, ##__VA_ARGS__)

#define return_err(r, fmt, ...)                                                \
	do {                                                                   \
		print_err(fmt, ##__VA_ARGS__);                                 \
		return r;                                                      \
	} while (0)