#include "filelock.h"
#include "lib/getopt.h"
-#include "lib/strcasestr.h"
+#include "oslib/strcasestr.h"
#include "crc/test.h"
char *opt;
int i;
+ if (!string)
+ return 0;
+
if (!strcmp(string, "?") || !strcmp(string, "help")) {
log_info("fio: dumping debug options:");
for (i = 0; debug_levels[i].name; i++) {