Hi,
Enum COPY_NEW_FE is removed in commit 3174d69fb9.
Should use COPY_FRONTEND instead.
Issue exists on 15 and master.
```
typedef struct CopyFromStateData
- StringInfo fe_msgbuf; /* used if copy_src == COPY_NEW_FE */
+ StringInfo fe_msgbuf; /* used if copy_src == COPY_FRONTEND */
```
Regards,
Zhang Mingli