Fixed many casting issues.

src/util/string.c

@@ -105,7 +105,11 @@ void stringStackInit(stringstack_t *stack) {
 
 void stringStackPush(stringstack_t *stack, char *string) {
   size_t offset = stack->size * STRING_STACK_STRING_SIZE;
-  arrayCopy(sizeof(char), string, strlen(string) + 1, stack->strings + offset);  
+  arrayCopy(
+    sizeof(char), string,
+    (int32_t)strlen(string) + 1,
+    stack->strings + offset
+  );
   stack->strings[stack->size] = stack->buffer + offset;
   stack->size++;
 }