diff --git a/lang/main.c b/lang/main.c
index ead53a2..f77ccb9 100644
--- a/lang/main.c
+++ b/lang/main.c
@@ -30,12 +30,9 @@
 }
 
 int lang_main(void) {
-	printf("Hello world!\n");
-	struct object *stack[16] = {0};
-	struct vm_state state;
-	state.stack_next = (struct object **)&stack;
-	state.stack_base = state.stack_next;
-	test_number(&state);
-	test_func(&state);
+	struct vm_state *state = vm_create();
+	test_number(state);
+	test_func(state);
+	vm_destroy(&state);
 	return 0;
 }
diff --git a/lang/vm.c b/lang/vm.c
index 5f01af3..aeb5e96 100644
--- a/lang/vm.c
+++ b/lang/vm.c
@@ -4,6 +4,28 @@
 #include "vm.h"
 #include "object.h"
 #include <stddef.h>
+#include <stdlib.h>
+
+struct vm_state {
+	struct object **stack;
+	struct object **stack_base;
+	struct object **stack_next;
+};
+
+struct vm_state *vm_create(void) {
+	struct vm_state *state = malloc(sizeof(struct vm_state));
+	struct object **stack = malloc(sizeof(struct object *) * 16);
+	state->stack = stack;
+	state->stack_base = stack;
+	state->stack_next = stack;
+	return state;
+}
+
+void vm_destroy(struct vm_state **state) {
+	free((*state)->stack);
+	free(*state);
+	*state = NULL;
+}
 
 void vm_stack_set(struct vm_state *state, int index, struct object *obj) {
 	struct object **stack_pos = &state->stack_base[index];
diff --git a/lang/vm.h b/lang/vm.h
index dfc77e3..1c56503 100644
--- a/lang/vm.h
+++ b/lang/vm.h
@@ -5,11 +5,10 @@
 #define VM_H
 
 struct object;
+struct vm_state;
 
-struct vm_state {
-	struct object **stack_base;
-	struct object **stack_next;
-};
+struct vm_state *vm_create(void);
+void vm_destroy(struct vm_state **state);
 
 void vm_stack_set(struct vm_state *state, int index, struct object *obj);
 struct object *vm_stack_get(struct vm_state *state, int index);