add_funcstack_to_list(funcstack_T *funcstack)
{
	// Link in list of funcstacks.
    if (first_funcstack != NULL)
	first_funcstack->fs_prev = funcstack;
    funcstack->fs_next = first_funcstack;
    funcstack->fs_prev = NULL;
    first_funcstack = funcstack;
}
add_funcstack_to_list(funcstack_T *funcstack)
{
	 
    if (first_funcstack != NULL)
	first_funcstack->fs_prev = funcstack;
    funcstack->fs_next = first_funcstack;
    funcstack->fs_prev = NULL;
    first_funcstack = funcstack;
}