diff --git a/Makefile b/Makefile
index 3a0c405..ec9741c 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
 main: main.c
 	gcc -Wall -Wextra -pedantic -o main main.c -pthread
+main_simple: main_simple.c
+	gcc -Wall -Wextra -pedantic -o main_simple main_simple.c -pthread
 	
diff --git a/main_simple.c b/main_simple.c
new file mode 100644
index 0000000..8d79bea
--- /dev/null
+++ b/main_simple.c
@@ -0,0 +1,28 @@
+#define _GNU_SOURCE
+#include <sched.h>
+#include <sys/wait.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/mman.h>
+#include <strings.h>
+#include <unistd.h>
+
+#define STACK_SIZE (1024 * 1024)
+
+int child(void* buf){
+	printf("print buf (addr=%p): %s\n",buf,(char *) buf);
+	sleep(2);
+	printf("print buf (addr=%p): %s\n",buf, (char *)buf);
+	exit(EXIT_SUCCESS);
+}
+
+int main(){
+	char * stack = malloc(STACK_SIZE * sizeof(char));
+	char * buf = malloc(256 * sizeof(char));
+	snprintf(buf,256,"inital"); 
+	clone(child, stack + STACK_SIZE, SIGCHLD | CLONE_THREAD | CLONE_SIGHAND | CLONE_VM, buf);
+	sleep(1);
+	snprintf(buf,256,"changed");
+	sleep(2);
+	exit(EXIT_SUCCESS);
+}