diff --git a/ovm/CMakeLists.txt b/ovm/CMakeLists.txt
index bab8f58..5def2b7 100644
--- a/ovm/CMakeLists.txt
+++ b/ovm/CMakeLists.txt
@@ -47,6 +47,18 @@ ADD_EXECUTABLE(task2
 	task.c trace.c
 )
 
+ADD_EXECUTABLE(task3
+	bin3.c
+	task3.c
+	task.c trace.c
+)
+
+ADD_EXECUTABLE(task4
+	bin4.c
+	task4.c
+	task.c trace.c
+)
+
 SET(WARN_FLAGS "-g -O2 -g2 -Wall -Wmissing-declarations -Wdeclaration-after-statement -Wcast-align -Wsign-compare -Wnested-externs -Wpointer-arith -Wl,--as-needed")
 # -Werror -Wbad-function-cast -Wmissing-prototypes
 
@@ -62,6 +74,12 @@ ADD_TARGET_PROPERTIES(task1 COMPILE_FLAGS ${COMMON_CFLAGS})
 ADD_TARGET_PROPERTIES(task2 LINK_FLAGS -lm ${COMMON_LDFLAGS})
 ADD_TARGET_PROPERTIES(task2 COMPILE_FLAGS ${COMMON_CFLAGS})
 
+ADD_TARGET_PROPERTIES(task3 LINK_FLAGS -lm ${COMMON_LDFLAGS})
+ADD_TARGET_PROPERTIES(task3 COMPILE_FLAGS ${COMMON_CFLAGS})
+
+ADD_TARGET_PROPERTIES(task4 LINK_FLAGS -lm ${COMMON_LDFLAGS})
+ADD_TARGET_PROPERTIES(task4 COMPILE_FLAGS ${COMMON_CFLAGS})
+
 IF(CMAKE_COMPILER_IS_GNUCC)
   SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99 -Wall -g -Wshadow -W -pedantic")
   SET(CMAKE_C_FLAGS_RELEASE        "${CMAKE_C_FLAGS_RELEASE}     -O2")
diff --git a/ovm/bin4.c b/ovm/bin4.c
new file mode 120000
index 0000000..55effb2
--- /dev/null
+++ b/ovm/bin4.c
@@ -0,0 +1 @@
+../task/bin4.c
\ No newline at end of file
diff --git a/ovm/task3.c b/ovm/task3.c
new file mode 100644
index 0000000..9c5fa43
--- /dev/null
+++ b/ovm/task3.c
@@ -0,0 +1,18 @@
+#include "task_main.h"
+
+static void debug(task_t * task) {
+}
+
+static void run(task_t *task, gpointer userdata) {
+	UNUSED(userdata);
+}
+
+static void run_debug(task_t *task, gpointer userdata) {
+	debug(task);
+	run(task, userdata);
+}
+
+int main(int argc, char **argv) {
+	task_main(argc, argv, run, run_debug, NULL, 2001);
+	return 0;
+}
diff --git a/ovm/task4.c b/ovm/task4.c
new file mode 100644
index 0000000..9c5fa43
--- /dev/null
+++ b/ovm/task4.c
@@ -0,0 +1,18 @@
+#include "task_main.h"
+
+static void debug(task_t * task) {
+}
+
+static void run(task_t *task, gpointer userdata) {
+	UNUSED(userdata);
+}
+
+static void run_debug(task_t *task, gpointer userdata) {
+	debug(task);
+	run(task, userdata);
+}
+
+int main(int argc, char **argv) {
+	task_main(argc, argv, run, run_debug, NULL, 2001);
+	return 0;
+}