[Boost-users] Re: Boost::shared_ptr and memory leaks

From: Vladimir Prus (ghost_at_[hidden])
Date: 2003-12-15 00:40:32

INsideR wrote:

> I have wrote simple programm:
>         using namespace boost;
>         shared_ptr<int> a(new int(10));
>         shared_ptr<int> b;
>         b=a;
>         a.reset(new int(20));
>         std::cout<<"a=="<<*a<<"  b=="<<*b;
>         return 0;
>         
> Checking this programm with DevPartner BoundsChecker, i found memory
> leak:
> Type    Quantity        Total (bytes)   Allocation Location     Sequence
> Leak exiting program    1       84      setlocale - [setlocal.c, line 547
> (Boostt.exe)] 9 Memory Leak Exiting Program: Address 0x00E44F88 (84)
> allocated by _malloc_dbg.
> 
> <if ( (ptloci = _malloc_crt( sizeof(threadlocinfo) )) == NULL )>
> 
> Where is the problem? May be i write incorrect code?

Looks like your iostream implementation is allocating memory and does not
free it. Or your memory checker is buggy. Or both ;-)

I suspect that if you remove all lines which create/modify shared_ptr
instances, the leak will be still there.

- Volodya

> 
> 
> 
> Best Wishes,
>  Yury                          mailto:insider83_at_[hidden]