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.NET Forum / Languages / Managed C++ / July 2005"warning C4996: 'strncpy' was declared deprecated"
I am testing VC++ 2005 and I get this warning: "warning C4996: 'strncpy' was declared deprecated" Does that mean that they might be phased out in VC++ 2006 or higher? Or does an alternative function exist as replacement? Yes, you should use strncpy_s. See "Security Enhancements in the CRT" on MSDN.  SignatureRegards, Nish [VC++ MVP] http://www.voidnish.com http://blog.voidnish.com >I am testing VC++ 2005 and I get this warning: > "warning C4996: 'strncpy' was declared deprecated" > > Does that mean that they might be phased out in VC++ 2006 or higher? > Or does an alternative function exist as replacement? > Yes, you should use strncpy_s. See "Security Enhancements in the CRT" on > MSDN. Thanks :-) Hi Olaf! > I am testing VC++ 2005 and I get this warning: > "warning C4996: 'strncpy' was declared deprecated" > Does that mean that they might be phased out in VC++ 2006 or higher? Yes. > Or does an alternative function exist as replacement? See: strncpy_s http://msdn2.microsoft.com/library/5dae5d43(en-us,vs.80).aspx Almost for every deprecated CRT function there is a "xxx_s" function available (only for strdup, there is only a _strdup). SignatureGreetings Jochen My blog about Win32 and .NET http://blog.kalmbachnet.de/ > I am testing VC++ 2005 and I get this warning: > "warning C4996: 'strncpy' was declared deprecated" > > Does that mean that they might be phased out in VC++ 2006 or higher? Not likely, since strncpy is an ISO C and C++ function, and is more efficient than strncpy_s. The deprecation warning is not intended to indicate that the standard functions will be removed, but rather to indicate potentially unsafe code. In fact, the _s functions are of dubious use in any case, since they don't make it significantly easier to write correct code in many cases (though they do make it easier to improve legacy code). There is a #define to get rid of the warnings, I forget what it is though. > Or does an alternative function exist as replacement? strncpy_s, but that is non-standard and non-portable for the time being (but there is a controversial C standard technical report under discussion). Tom Hi Tom! > There is a #define to get rid of the warnings, I > forget what it is though. The following defines can be used to get rid of the warnings: - _CRT_SECURE_NO_DEPRECATE - _CRT_NONSTDC_NO_DEPRECATE - _USE_32BIT_TIME_T >> Or does an alternative function exist as replacement? > > strncpy_s, but that is non-standard and non-portable for the time being > (but there is a controversial C standard technical report under > discussion). The standard can be found here: http://www.opengroup.org/platform/single_unix_specification/uploads/40/6355/n1093.pdf SignatureGreetings Jochen My blog about Win32 and .NET http://blog.kalmbachnet.de/ >> strncpy_s, but that is non-standard and non-portable for the time >> being (but there is a controversial C standard technical report under >> discussion). > > The standard can be found here: > http://www.opengroup.org/platform/single_unix_specification/uploads/40/6355/n1093.pdf I think it's worth making it clear that it isn't a standard, but rather a draft technical report, and one that may never become a real technical report, and will almost certainly never become part of the full C or C++ standards. Tom Hi Tom! >>> strncpy_s, but that is non-standard and non-portable for the time >>> being (but there is a controversial C standard technical report under [quoted text clipped - 7 lines] > report, and will almost certainly never become part of the full C or C++ > standards. There are a lot of misleading discussions in this area. And I will not add my comment here... (in any case, it will be interpreted the wrong way). SignatureGreetings Jochen My blog about Win32 and .NET http://blog.kalmbachnet.de/
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