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How do I assign new BSTR string to a _bstr_t that already holds an address without getting a memory leak?

Hi Expert,

I am getting memory leak with my code below. I just want to assign a new BSTR string to a _bstr_t variable but I'm getting a memory leak report in Rational Purfify from it. Is the Detatch method a wrong call? What is the appropriat way to do this? Thank you.
syUserContextPath is a _bstr_t variable and so is bstrDomainOnly

syUserContextPath.Detach();
syUserContextPath = L"CN=SymarkGroup,CN=USERS," + bstrDomainOnly;

jkr

What data type is 'syUserContextPath'?

rajeev_devin

Can you please elaborate.

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AlexFM

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simplysuperb_knp

Try doing this:-
BSTR bs = syUserContextPath.Detach();
Now free the bstr called "bs":-
SysFreeString(bs);

I guess what is happening is that you are not freeing the memory after a call to Detach().

lapucca

ASKER

As I mentioned in my posting:

syUserContextPath is a _bstr_t variable and so is bstrDomainOnly

It's my understanding that _bstr_t is a smart pointer that it manages its own memory. I don't think that's an issue. I just want to assign it a new BSTR string. I do find that it seems to work that I do a Detach() before I assign the new string, otherwise my program crashes. I don't know if this is the right way to reasign string to this type of variable.

Thank you.