Re: Help is needed

[Jonathan Wakely <cow at compsoc dot man dot ac dot uk>]

On Thu, Apr 17, 2003 at 12:54:08PM -0300, Luiz Rafael Culik Guimaraes wrote:

> Dear Friends

hi

> I an code that was compiling properly with Gcc 2.95.3 Now i updated to
> gcc 3.2 and i has the follow errors  on compiling
> 
> ../../ZipString.h: In static member function `static int 
>    CZipString::zslen(const TCHAR*)':
> ../../ZipString.h:91: `string_char_traits' undeclared in namespace `std'
> ../../ZipString.h:91: parse error before `;' token
> ../../ZipString.h:91: invalid conversion from `const TCHAR*' to `int'

You probably want to use std::char_traits<char> here, not
string_char_traits. GCC 2.95 did not conform to the standard here and
you've used a non-standard type that isn't portable to other compilers.

> ./../ZipCollections.h:39: warning: `typename std::vector<TYPE, 
>    std::allocator<_CharT> >::iterator' is implicitly a typename
> ../../ZipCollections.h:39: warning: implicit typename is deprecated,
> please see 
>    the documentation for details

This means that std::vector<TYPE, std::allocator<_CharT> >::iterator
is a dependent type i.e. a type that depends on a template parameter.

Because template parameters are not known until the template is
instantiated you have to tell the compiler that you are talking about
a type. This is done with the "typename" keyword.
To get rid of the warnings put "typename" before the name of the type
(as the compiler has done in the warning messages)

hope that helps,

jon


-- 
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