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-rw-r--r--src/backend/access/transam/xlog.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 18fc23286aa..ff7f521a1b1 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -9481,7 +9481,7 @@ do_pg_stop_backup(char *labelfile, bool waitforarchive)
* during the backup.
*/
ptr = strstr(remaining, "BACKUP FROM:");
- if (sscanf(ptr, "BACKUP FROM: %19s\n", backupfrom) != 1)
+ if (!ptr || sscanf(ptr, "BACKUP FROM: %19s\n", backupfrom) != 1)
ereport(ERROR,
(errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
errmsg("invalid data in file \"%s\"", BACKUP_LABEL_FILE)));