C++ Boost: what's the cause of this warning?

user_65313 0
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I have a simple C++ with Boost like this:

#include <boost/algorithm/string.hpp>

int main()
{
  std::string latlonStr = "hello,ergr()()rg(rg)";
  boost::find_format_all(latlonStr,boost::token_finder(boost::is_any_of("(,)")),boost::const_formatter(" "));

This works fine; it replaces every occurrence of ( ) , with a " "

However, I get this warning when compiling:

I'm using MSVC 2008, Boost 1.37.0.

1>Compiling...
1>mainTest.cpp
1>c:\work\minescout-feat-000\extlib\boost\algorithm\string\detail\classification.hpp(102) : warning C4996: 'std::copy': Function call with parameters that may be unsafe - this call relies on the caller to check that the passed values are correct. To disable this warning, use -D_SCL_SECURE_NO_WARNINGS. See documentation on how to use Visual C++ 'Checked Iterators'
1>        c:\program files (x86)\microsoft visual studio 9.0\vc\include\xutility(2576) : see declaration of 'std::copy'
1>        c:\work\minescout-feat-000\extlib\boost\algorithm\string\classification.hpp(206) : see reference to function template instantiation 'boost::algorithm::detail::is_any_ofF<CharT>::is_any_ofF<boost::iterator_range<IteratorT>>(const RangeT &)' being compiled
1>        with
1>        [
1>            CharT=char,
1>            IteratorT=const char *,
1>            RangeT=boost::iterator_range<const char *>
1>        ]
1>        c:\work\minescout-feat-000\minescouttest\maintest.cpp(257) : see reference to function template instantiation 'boost::algorithm::detail::is_any_ofF<CharT> boost::algorithm::is_any_of<const char[4]>(RangeT (&))' being compiled
1>        with
1>        [
1>            CharT=char,
1>            RangeT=const char [4]
1>        ]

I could certainly disable the warning using 

-D_SCL_SECURE_NO_WARNINGS

but I'm a bit reluctant to do that before I find out what's wrong, or more importantly if my code is incorrect.

compiler-warnings boost c++
6 Answers

You can also disable this warning in specific headers:

#if defined(_MSC_VER) && _MSC_VER >= 1400 
#pragma warning(push) 
#pragma warning(disable:4996) 
#endif 

/* your code */ 

#if defined(_MSC_VER) && _MSC_VER >= 1400 
#pragma warning(pop) 
#endif
user_2692420

Alternatively, if you use C++11 and don't want to turn off warnings, you have the painful option of replacing 

boost::is_any_of(L"(,)")

with the following lambda expression

[](wchar_t &c) { for (auto candidate : { L'(', L',', L')' }) { if (c == candidate) return true; }; return false; }

You can also possibly pack that into a macro

user_98409810
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