fluffos's crash

[reallove]

My driver crashes occasionally

It always with the log like

FATAL: Object 0xaa85cd8 /item/tool/budai#1471 ref count 0, but not destructed (from free_svalue).

or

FATAL: Object 0x7f234b58 /clone/money/gold#32143 ref count 0, but not destructed (from free_svalue)
.

These objects(/item/tool/budai and /clone/money/gold) inherits by /feature/combined.c

Code: [Select]

// combined_item.c

#include <dbase.h>
#include <name.h>

inherit F_CLEAN_UP;
inherit F_DBASE;
inherit F_MOVE;
inherit F_NAME;

static int amount;

void setup()
{
}

int query_amount() { return amount; }

private void destruct_me() { destruct(this_object()); }

void set_amount(int v)
{
if( v < 0 ) error("combine:set_amount less than 1.\n");
if( v==0 ) {
destruct(this_object());
return;
}
amount = v;
set_weight(v * (int)query("base_weight"));
}

void add_amount(int v) { set_amount(amount + v); }

string short()
{
return chinese_number(query_amount()) + query("base_unit")
+ ::short();
}

varargs int move(mixed dest, int silent)
{
        object env, *inv;
        int i, total;
        string file;

        if( ::move(dest, silent) ) {
                if( living(env = environment()) ) {
                        file = base_name(this_object());
                        inv = all_inventory(env);
                        total = (int)query_amount();
                        for(i=0; i<sizeof(inv); i++) {
                                if( inv[i]==this_object() ) continue;
                                if( base_name(inv[i])==file ) {
                                        total +=
(int)inv[i]->query_amount();
                                        destruct(inv[i]);
                                }
                        }
                        set_amount(total);
                }
                return 1;
        }
}

Please help me find the crash reason, thanks.