warning C4275, C4271when using boost::noncopyable
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. 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
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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Hi, Thanks for response, but I do not want to use /MTd flag. And I'm sure that previous version of boost was compiled with /MD, Dump of file libboost_system-vc140-mt-gd-1_62.lib File Type: LIBRARY Linker Directives ----------------- /FAILIFMISMATCH:_MSC_VER=1900 /FAILIFMISMATCH:_ITERATOR_DEBUG_LEVEL=2 /FAILIFMISMATCH:RuntimeLibrary=MDd_DynamicDebug /DEFAULTLIB:msvcprtd /FAILIFMISMATCH:_CRT_STDIO_ISO_WIDE_SPECIFIERS=0 /DEFAULTLIB:uuid.lib /DEFAULTLIB:uuid.lib /DEFAULTLIB:MSVCRTD /DEFAULTLIB:OLDNAMES Current version is compiled with /MD too: Dump of file .\libboost_system-vc140-mt-gd-x32-1_73.lib File Type: LIBRARY Linker Directives ----------------- /FAILIFMISMATCH:_MSC_VER=1900 /FAILIFMISMATCH:_ITERATOR_DEBUG_LEVEL=2 /FAILIFMISMATCH:RuntimeLibrary=MDd_DynamicDebug /DEFAULTLIB:msvcprtd /DEFAULTLIB:MSVCRTD /DEFAULTLIB:OLDNAMES ср, 13 мая 2020 г. в 23:25, 😉 Good Guy 😉 via Boost-users < boost-users@lists.boost.org>:
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/compil...
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
_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org https://lists.boost.org/mailman/listinfo.cgi/boost-users
-- With over 1.2 billion devices now running Windows 10, customer satisfaction is higher than any previous version of windows.
_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org https://lists.boost.org/mailman/listinfo.cgi/boost-users
I found an answer: it because noncopyable now inherit base_token. Thanks, Closed чт, 14 мая 2020 г. в 13:30, Roman Savchenko <gmstima@gmail.com>:
Hi,
Thanks for response, but I do not want to use /MTd flag. And I'm sure that previous version of boost was compiled with /MD,
Dump of file libboost_system-vc140-mt-gd-1_62.lib
File Type: LIBRARY
Linker Directives ----------------- /FAILIFMISMATCH:_MSC_VER=1900 /FAILIFMISMATCH:_ITERATOR_DEBUG_LEVEL=2 /FAILIFMISMATCH:RuntimeLibrary=MDd_DynamicDebug /DEFAULTLIB:msvcprtd /FAILIFMISMATCH:_CRT_STDIO_ISO_WIDE_SPECIFIERS=0 /DEFAULTLIB:uuid.lib /DEFAULTLIB:uuid.lib /DEFAULTLIB:MSVCRTD /DEFAULTLIB:OLDNAMES
Current version is compiled with /MD too: Dump of file .\libboost_system-vc140-mt-gd-x32-1_73.lib
File Type: LIBRARY
Linker Directives ----------------- /FAILIFMISMATCH:_MSC_VER=1900 /FAILIFMISMATCH:_ITERATOR_DEBUG_LEVEL=2 /FAILIFMISMATCH:RuntimeLibrary=MDd_DynamicDebug /DEFAULTLIB:msvcprtd /DEFAULTLIB:MSVCRTD /DEFAULTLIB:OLDNAMES
ср, 13 мая 2020 г. в 23:25, 😉 Good Guy 😉 via Boost-users < boost-users@lists.boost.org>:
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/compil...
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
_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org https://lists.boost.org/mailman/listinfo.cgi/boost-users
-- With over 1.2 billion devices now running Windows 10, customer satisfaction is higher than any previous version of windows.
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