commit 6ed86ad170b60517eeddb54c2b22fdc888a22c0b
author Bram Moolenaar <Bram@vim.org> Tue Mar 20 13:30:42 2018 +0100
committer Bram Moolenaar <Bram@vim.org> Tue Mar 20 13:30:42 2018 +0100
tree 3ffa019c9bfe797eb10578477c312ec613ae84b3
parent 6185903e3d07eb53326fc1403fc2de97ca31b775

patch 8.0.1622: possible NULL pointer dereference

Problem:    Possible NULL pointer dereferencey. (Coverity)
Solution:   Reverse the check for a NULL pointer.

src/quickfix.c

diff --git a/src/quickfix.c b/src/quickfix.c
index e8fe59b..6e1e859 100644
--- a/src/quickfix.c
+++ b/src/quickfix.c
@@ -4256,7 +4256,7 @@
 	goto theend;
     }
 
-    if (s != NULL && *s == NUL)
+    if (s == NULL || *s == NUL)
     {
 	/* Pattern is empty, use last search pattern. */
 	if (last_search_pat() == NULL)