snprintf(_fname, sizeof(_fname), "%s_%s", prefix, #func); \
sym->func = (typeof(sym->func))dlsym(sym->dl_handle, _fname); \
} while (0)
snprintf(_fname, sizeof(_fname), "%s_%s", prefix, #func); \
sym->func = (typeof(sym->func))dlsym(sym->dl_handle, _fname); \
} while (0)