いつものASSERTマクロ ref: http://qiita.com/ykst/items/f368e6ec8d0160b19ba8

file0.c

#ifndef unlikely
# ifdef __builtin_expect
# define unlikely(x) __builtin_expect((x), 0)
# else
# define unlikely(x) (x)
# endif
#endif

#define ERROR(fmt, ...) do { \
  fprintf(stderr, "\x1b[1;31mERROR:%s:%s:%d: " fmt "\x1b[0m",  __BASE_FILE__, __FUNCTION__, __LINE__, ##__VA_ARGS__); \
} while (0)

#define ASSERT(b,action) ({ int __b = (int)(b); if(unlikely(!(__b))){ ERROR("failed (%s)\n", #b); action; } __b;})

file1.c

// ASSERT(<条件式>, <失敗時アクション>)
ASSERT(maybe_failed() == SUCCESS, goto error);

file2.txt

ERROR :main.c:main:17: failed (maybe_failed() == SUCCESS)

file3.c

ASSERT(maybe_failed() == SUCCESS, { do_something(); goto error; });