Redis make REDIS_CFLAGS="-DREDIS_TEST" error

server.o: In function `main':
/home/hzw/code/redis/src/server.c:3723: undefined reference to `sdsTest'
collect2: error: ld returned 1 exit status
Makefile:199: recipe for target 'redis-server' failed
make[1]: *** [redis-server] Error 1
make[1]: Leaving directory '/home/hzwn1699/code/redis/src'
Makefile:6: recipe for target 'all' failed
make: *** [all] Error 2

In sds.h:

#ifdef REDIS_TEST
int sdsTest(int argc, char *argv[]);
#endif

But I can't find this function definition.

Comment From: oranagra

solved by https://github.com/redis/redis/pull/7854