asked on

...\include\xstring warning

Halli Hallo ...

What does this warning mean and how to solve it?

Thank you very much in advance ...

1>C:\Programme\Microsoft Visual Studio 9.0\VC\include\xstring(2092) : warning C4530: C++ exception handler used, but unwind semantics are not enabled. Specify /EHsc
1>        C:\Programme\Microsoft Visual Studio 9.0\VC\include\xstring(2083) : while compiling class template member function 'void std::basic_string<_Elem,_Traits,_Ax>::_Copy(unsigned int,unsigned int)'
1>        with
1>        [
1>            _Elem=char,
1>            _Traits=std::char_traits<char>,
1>            _Ax=std::allocator<char>
1>        ]
1>        C:\Programme\Microsoft Visual Studio 9.0\VC\include\xstring(2221) : see reference to class template instantiation 'std::basic_string<_Elem,_Traits,_Ax>' being compiled
1>        with
1>        [
1>            _Elem=char,
1>            _Traits=std::char_traits<char>,
1>            _Ax=std::allocator<char>
1>        ]

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ASKER CERTIFIED SOLUTION

evilrix

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evilrix

More info: http://msdn.microsoft.com/en-us/library/1deeycx5.aspx

AndyAinscow

Just an aside - you can usually ignore warnings without problems. It is what it is - a warning that something is not quite correct but might not be a problem in reality.

SOLUTION

evilrix

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chang2008

ASKER

I have enabled C++ Exceptions and then the warning is gone.

Project property -> C/C++ -> Code Generation -> Enable C++ Exceptions [ set as "Yes(/EHsc) ]

I prefer to have my code without warning and I don't want to ignore it. When the waring is shown, I feel that it means something wrong and can cause a problem in the future. I do agree with evilrix.

Thanks for all comments.

chang2008

ASKER

Thank you very much and have a nice day. :)

AndyAinscow

I think you (and evilrix) might have misunderstood.
Errors must be fixed.
Warnings must be checked, but they might be ignored if it is safe to do so.