3 files changed, 21 insertions, 3 deletions
diff --git a/utils/persistent_mode/persistent_demo.c b/utils/persistent_mode/persistent_demo.c
index 4cedc32c..f5e43728 100644
--- a/utils/persistent_mode/persistent_demo.c
+++ b/utils/persistent_mode/persistent_demo.c
@@ -27,9 +27,15 @@
 #include <unistd.h>
 #include <signal.h>
 #include <string.h>
+#include <limits.h>
 
 /* Main entry point. */
 
+/* To ensure checks are not optimized out it is recommended to disable
+   code optimization for the fuzzer harness main() */
+#pragma clang optimize off
+#pragma GCC            optimize("O0")
+
 int main(int argc, char **argv) {
 
   ssize_t len;                               /* how much input did we read? */
@@ -42,7 +48,7 @@ int main(int argc, char **argv) {
      and similar hiccups. */
 
   __AFL_INIT();
-  while (__AFL_LOOP(1000)) {
+  while (__AFL_LOOP(UINT_MAX)) {
 
     /*** PLACEHOLDER CODE ***/
 
diff --git a/utils/persistent_mode/persistent_demo_new.c b/utils/persistent_mode/persistent_demo_new.c
index 0d24a51e..7e694696 100644
--- a/utils/persistent_mode/persistent_demo_new.c
+++ b/utils/persistent_mode/persistent_demo_new.c
@@ -27,6 +27,7 @@
 #include <unistd.h>
 #include <signal.h>
 #include <string.h>
+#include <limits.h>
 
 /* this lets the source compile without afl-clang-fast/lto */
 #ifndef __AFL_FUZZ_TESTCASE_LEN
@@ -47,6 +48,11 @@ __AFL_FUZZ_INIT();
 
 /* Main entry point. */
 
+/* To ensure checks are not optimized out it is recommended to disable
+   code optimization for the fuzzer harness main() */
+#pragma clang optimize off
+#pragma GCC            optimize("O0")
+
 int main(int argc, char **argv) {
 
   ssize_t        len;                        /* how much input did we read? */
@@ -60,7 +66,7 @@ int main(int argc, char **argv) {
   __AFL_INIT();
   buf = __AFL_FUZZ_TESTCASE_BUF;  // this must be assigned before __AFL_LOOP!
 
-  while (__AFL_LOOP(1000)) {  // increase if you have good stability
+  while (__AFL_LOOP(UINT_MAX)) {  // increase if you have good stability
 
     len = __AFL_FUZZ_TESTCASE_LEN;  // do not use the macro directly in a call!
 
diff --git a/utils/persistent_mode/test-instr.c b/utils/persistent_mode/test-instr.c
index a6188b22..6da511de 100644
--- a/utils/persistent_mode/test-instr.c
+++ b/utils/persistent_mode/test-instr.c
@@ -17,15 +17,21 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
+#include <limits.h>
 
 __AFL_FUZZ_INIT();
 
+/* To ensure checks are not optimized out it is recommended to disable
+   code optimization for the fuzzer harness main() */
+#pragma clang optimize off
+#pragma GCC            optimize("O0")
+
 int main(int argc, char **argv) {
 
   __AFL_INIT();
   unsigned char *buf = __AFL_FUZZ_TESTCASE_BUF;
 
-  while (__AFL_LOOP(2147483647)) {  // MAX_INT if you have 100% stability
+  while (__AFL_LOOP(UINT_MAX)) {  // if you have 100% stability
 
     unsigned int len = __AFL_FUZZ_TESTCASE_LEN;