Silence -Wimplicit-fallthrough in sysv_shmem.c.

Commit 2f932f71d9f2963bbd201129d7b971c8f5f077fd added code that elicits
a warning on buildfarm member flaviventris.  Back-patch to 9.4, like
that commit.

Reported by Andres Freund.

Discussion: https://postgr.es/m/20190404020057.galelv7by75ekqrh@alap3.anarazel.de

diff --git a/src/backend/port/sysv_shmem.c b/src/backend/port/sysv_shmem.c
index 07037a7fda78591b1ba959d3b10a5521eb030e8e..a4533046ce9874301b557773ac2163e80ed6f188 100644 (file)
--- a/src/backend/port/sysv_shmem.c
+++ b/src/backend/port/sysv_shmem.c
@@ -676,6 +676,7 @@ PGSharedMemoryCreate(Size size, int port,
                                (unsigned long) shmid),
                         errhint("Terminate any old server processes associated with data directory \"%s\".",
                                 DataDir)));
+               break;
            case SHMSTATE_ENOENT:
 
                /*
@@ -707,6 +708,7 @@ PGSharedMemoryCreate(Size size, int port,
                    dsm_cleanup_using_control_segment(oldhdr->dsm_control);
                if (shmctl(shmid, IPC_RMID, NULL) < 0)
                    NextShmemSegID++;
+               break;
        }
 
        if (oldhdr && shmdt(oldhdr) < 0)