From ad58f8da1d4fbd45abf163514a9643a14e1636ee Mon Sep 17 00:00:00 2001
From: Balbir singh <bsingharora@gmail.com>
Date: Fri, 18 May 2018 09:31:00 +1000
Subject: Fix strtok for previous tokens being NULL

Caught by scan-build. If the stored token nxtTok
is already NULL, don't dereference src

Signed-off-by: Balbir singh <bsingharora@gmail.com>
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
---
 libc/string/strtok.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'libc/string')

diff --git a/libc/string/strtok.c b/libc/string/strtok.c
index 665c08d..aa42d77 100644
--- a/libc/string/strtok.c
+++ b/libc/string/strtok.c
@@ -18,8 +18,11 @@ strtok(char *src, const char *pattern)
 	static char *nxtTok;
 	char *retVal = NULL;
 
-	if (!src)
+	if (!src) {
 		src = nxtTok;
+		if (!src)
+			return retVal;
+	}
 
 	while (*src) {
 		const char *pp = pattern;
-- 
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