Problem porting from VC6 to VS.net

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slarti - 04 Mar 2005 23:18 GMT

My VS6 version used

#include <fstream.h>

which for VS.net I had to change to

#include <fstream>
using namespace std;

Now I get a compiler error :
C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\fstream(465)

: error C2061: syntax error : identifier '_DebugHeapTag'

C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\fstream(457)

: while compiling class-template member function 'void

std::basic_filebuf<_Elem,_Traits>::_Initcvt(std::basic_filebuf<_Elem,_Traits

>::_Cvt *)'

with

[

_Elem=char,

_Traits=std::char_traits<char>

]

C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\include\fstream(484)

: see reference to class template instantiation

'std::basic_filebuf<_Elem,_Traits>' being compiled

with

[

_Elem=char,

_Traits=std::char_traits<char>

]

Can anyone tell me how to fix it?

Thanks

DaveB

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sergega4@yahoo.fr - 07 Mar 2005 01:29 GMT

Not very sure to be usefull, but first, press F1 after left clicking at the
Output line in the one precising the error code to activate MSDN in this
context (precised by a error code in general), second, I've got not that far
(similar) errors porting from the same compilators with fstream templates,
sometimes I fixed it by myself sometimes I've gone back to C FILE* struct,
not glorious but robust and time saving.
Good luck
Xav

> My VS6 version used
>
[quoted text clipped - 43 lines]
>
> DaveB

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Carl Daniel [VC++ MVP] - 07 Mar 2005 01:55 GMT

> My VS6 version used
>
[quoted text clipped - 7 lines]
> Now I get a compiler error :
> Can anyone tell me how to fix it?

If you can post a bit more code - ideally a complete .cpp file that you
think should compile but which does not.

-cd

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Nikola Dudar [MSFT] - 10 Mar 2005 03:06 GMT

Most likely you have a project with several files that include mix of
CRT/MFC headers. What happens that you are including some CRT headers that
defined one mode of compilation, when in other headers define another mode
of compilation. You can play with how you headers are included and narrow
down the problem. However in most cases it is simpler and faster to just
move #include <fstream> to the top of stdafx.h, before other includes. This
shoud fix the problem.

Nikola

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> My VS6 version used
>
[quoted text clipped - 46 lines]
>
> DaveB

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Problem porting from VC6 to VS.net

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