Check for NULL before dereferencing a pointer

l is part of the exit condition of the while loop. If we exit the loop because l is NULL, we cannot dereference it.
2021-12-28 16:22:51 +01:00
parent 6432709b80
commit 1365cc1ecc
1 changed files with 2 additions and 1 deletions
@@ -8139,7 +8139,8 @@ getNextPage(Buffer *buf, int plen)
 		l = l->next;
 	    } while (l && l->bpos);
 	    buf->firstLine = l;
-	    buf->firstLine->prev = NULL;
+	    if (l)
+		buf->firstLine->prev = NULL;
 	}
    }
  pager_end: