Re: warning C4275, C4271when using boost::noncopyable

From: 😉 Good Guy 😉 (xfsgpr_at_[hidden])
Date: 2020-05-13 20:24:59

On 13/05/2020 20:27, Roman Savchenko via Boost-users wrote:
> Hi All,
>
> I'm trying to update from boost 1.62 to boost 1.73. Boost 1.62 was 
> built with VS15 140 toolchain with shared runtime (/MD) and as static 
> lib. Boost 1.73 was built with VS19 140 toolchain with /MD and as 
> static lib.

Try using /MTd to see if it makes any difference.  See this article:

<https://docs.microsoft.com/en-us/cpp/error-messages/compiler-warnings/compiler-warning-level-2-c4275?view=vs-2019>

>
> I have a class:
>
> #include <boost/noncopyable.h>
>
> class __declspec(dllexport) A : private boost::noncopyable
>
> when I'm using 1.62 I do not have such warning.
> when I'm using 1.73 I do have such warning.
>
> I'll appreciate if anyone could help me to understand what I'm 
> missing. Why does new version of header generate this warning?
>
> Thanks,
> Roman
>
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