diff options
| -rw-r--r-- | src/backend/port/sysv_shmem.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/backend/port/sysv_shmem.c b/src/backend/port/sysv_shmem.c index 20f31ed218d..8f1da7a7ef4 100644 --- a/src/backend/port/sysv_shmem.c +++ b/src/backend/port/sysv_shmem.c @@ -56,6 +56,12 @@ typedef int IpcMemoryId; /* shared memory ID returned by shmget(2) */ #define PG_MMAP_FLAGS (MAP_SHARED|MAP_ANONYMOUS|MAP_HASSEMAPHORE) +/* Some really old systems don't define MAP_FAILED. */ +#ifndef MAP_FAILED +#define MAP_FAILED ((void *) -1) +#endif + + unsigned long UsedShmemSegID = 0; void *UsedShmemSegAddr = NULL; static Size AnonymousShmemSize; |