Re: Is overriding a function of a library in accordance with C++ standard?

From:

"Alexander Grigoriev" <alegr@earthlink.net>

Newsgroups:

microsoft.public.vc.mfc

Date:

Fri, 25 Aug 2006 19:47:50 -0700

Message-ID:

<#nCKJoLyGHA.4240@TK2MSFTNGP03.phx.gbl>

I think the original function is declared as dllimport in the h file. This
is causing the warning.

"AliR" <AliR@online.nospam> wrote in message
news:44ef3f6e$0$15231$a8266bb1@reader.corenews.com...

Here is the code
void * memccpy(void *, const void *, int, size_t)
{
return NULL;
}

And here is the compiler warning.
warning C4273: 'memccpy' : inconsistent dll linkage

It linked without any errors, but if I was to call memcpy in my code it
would not call the one that I have written, it only calls the one in the
system library. Where in strlen's case the overloaded one got called.

AliR.

"Pete Delgado" <Peter.Delgado@noads.net> wrote in message
news:OIUiPhGyGHA.1256@TK2MSFTNGP04.phx.gbl...

"AliR" <AliR@online.nospam> wrote in message
news:44ef2249$0$15184$a8266bb1@reader.corenews.com...

I am not sure why that is, but if you try to overload memcpy you will
get

compiler warning.

Could you show the compiler warning and the code that you used to
generate
it? It seems to me that a correctly contructed function body should not
issue a compiler warning as this is the relm of the linker. I just tried
your suggestion with VS 2003 and didn't get a peep from either the

compiler

or linker.

-Pete

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