recorder

102 |     /* Point __real_func to the real funciton using dlsym() */
103 |     #define MAP_OR_FAIL(func)                                                   \
104 |         if (!(__real_##func)) {                                                 \
105 |             __real_##func = dlsym(RTLD_NEXT, #func);                            \
106 |             if (!(__real_##func)) {                                             \
107 |                 printf("Recorder failed to map symbol: %s\n", #func);           \