added and fixed stack

interpreter/method_dispatcher/test/Makefile

@@ -3,7 +3,7 @@ CC=gcc
 all: test_method_dispatcher
 
 method_dispatcher: clean
-	$(CC) ../method_dispatcher.c test_method_dispatcher.c -o method_dispatcher
+	$(CC) -g ../method_dispatcher.c test_method_dispatcher.c -o method_dispatcher
 
 test_method_dispatcher: method_dispatcher
 	valgrind ./method_dispatcher

interpreter/stack.c

@@ -10,17 +10,31 @@ char bci_stack_t_push(bci_stack_t * stack, uint16_t value)
 	}
 	node->next = *stack;
 	node->value = value;
-	stack = &node;
+	*stack = node;
 	return 0;
 }
 char bci_stack_t_pop(bci_stack_t * stack, uint16_t * result)
 {
+	bci_stack_t this_node;
 	if(!*stack)
 	{
 		return 1;
 	}
-	*result = (*stack)->value;
-	*stack = (*stack)->next;
+	this_node = *stack;
+	*result = this_node->value;
+	*stack = this_node->next;
+	free(this_node);
 	return 0;
 }
 
+void bci_stack_t_del(bci_stack_t * stack)
+{
+	bci_stack_t this_node;
+
+	while(*stack)
+	{
+		this_node = *stack;
+		*stack = this_node->next;
+		free(this_node);
+	}
+}

interpreter/stack.h

@@ -11,4 +11,10 @@ typedef struct bci_stack_s
 
 char bci_stack_t_push(bci_stack_t * stack, uint16_t value);
 char bci_stack_t_pop(bci_stack_t * stack, uint16_t * result);
+
+/*
+ * Deletes the entire (!) stack.
+ *
+ * */
+void bci_stack_t_del(bci_stack_t * stack);
 #endif

interpreter/test/Makefile

@@ -0,0 +1,12 @@
+CC=gcc
+
+all: test_stack
+
+stack: clean
+	$(CC) -g ../stack.c test_stack.c -o stack
+
+test_stack: stack
+	valgrind ./stack
+
+clean:
+	-rm stack

interpreter/test/test_stack.c

@@ -0,0 +1,29 @@
+#include <stdio.h>
+#include "../stack.h"
+
+int main(void)
+{
+	bci_stack_t stack = NULL;
+	int i;
+	uint16_t res;
+	char status = 0;
+
+
+	for(i = 0; i < 10; i++)
+	{
+		bci_stack_t_push(&stack, (uint16_t) i);
+	}
+	while(!status)
+	{
+		status = bci_stack_t_pop(&stack, &res);
+		printf("%d\n", res);
+	}
+
+
+	for(i = 0; i < 10; i++)
+	{
+		bci_stack_t_push(&stack, (uint16_t) i);
+	}
+	bci_stack_t_del(&stack);
+	return 0;
+}