patch 8.1.1895: using NULL pointer when out of memoryv8.1.1895

Problem:    Using NULL pointer when out of memory.
Solution:   Bail out or skip the code using the pointer. (Zu-Ming Jiang,
            closes #4805, closes #4843, closes #4939, closes #4844)

1 files changed, 5 insertions, 0 deletions

diff --git a/src/ops.c b/src/ops.c
index 7ede1f73a..7b1d9ede7 100644
--- a/src/ops.c
+++ b/src/ops.c
@@ -4556,6 +4556,11 @@ do_join(
 
     /* allocate the space for the new line */
     newp = alloc(sumsize + 1);
+    if (newp == NULL)
+    {
+	ret = FAIL;
+	goto theend;
+    }
     cend = newp + sumsize;
     *cend = 0;