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 <[email protected]> Signed-off-by: Stewart Smith <[email protected]>
hmyneni · May 24, 2018 · ad58f8d · ad58f8d
1 parent 53dac89
commit ad58f8d
Showing 1 changed file with 4 additions and 1 deletion.
diff --git 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;