code clean

1 files changed, 3 insertions, 3 deletions

diff --git a/testcase/userstack.c b/testcase/userstack.c
index 003f19e..5da72c7 100644
--- a/testcase/userstack.c
+++ b/testcase/userstack.c
@@ -43,7 +43,7 @@ void *customFunction1(void *n) {
         while (1) {
             sleep(1);
         } // never return, keep stack
-        return NULL;
+        // return NULL;
     } else {
         printf("Calling customFunction2\n");
         customFunction2(num-1);
@@ -59,7 +59,7 @@ void customFunction2(int n) {
         while (1) {
             sleep(1);
         } // never return, keep stack
-        return NULL;
+        // return NULL;
     }
     customFunction3(n-1);
 }
@@ -72,7 +72,7 @@ void customFunction3(int n) {
         while (1) {
             sleep(1);
         } // never return, keep stack
-        return NULL;
+        // return NULL;
     }
     customFunction2(n-1);
 }