Re: iword and sword problem

From:

"Bo Persson" <bop@gmb.dk>

Newsgroups:

comp.lang.c++.moderated

Date:

6 Sep 2006 13:59:55 -0400

Message-ID:

<4m8d62F4v2elU1@individual.net>

Erik wrote:

{ quoted signature and banner removed. please watch what you quote.
thanks. -mod }

kanze schrieb:

Bo Persson wrote:

"Erik" <erik.griessmann@fmc-ag.com> skrev i meddelandet
news:1154496683.625736.118250@b28g2000cwb.googlegroups.com...

I used the static ios_base functions iword and sword in a
DLL-Library-Code to implement a manipulator. My Visual C++ 8
compiler
always complains about a memory leak, when the program is
terminated.
Is this a compiler specific problem?

Could be.

The leak detector is run at the end of main(), well before
global objects are destroyed.

That depends on the leak detector.

Yes, I'm referring to the leak detector built into the VC++ debug
mode. That one runs right after the main() function, but before global
objects are destructed. It simply reports what heap objects are
allocated at that point. Some of them might be released later.

Note, too, that cin, cout
and cerr are never destructed. If he has used his manipulator
on one of these, the memory it causes to be allocated will never
be freed. Some leak detectors might complain here, too,
regardless of how late they run. (It depends on the
sophistication of the leak detector; a good leak detector will
recognize that there are still pointers to the memory in static
objects, and only warn that there might be a leak.)

iword and pword are member functions of the class ios_base. Thus the
problem shouldn't have smth. to do with cout, cin, cerr.

But those are of stream types that inherit from ios_base. Therefore
they might be affected.

Bo Persson

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