CODEWITHSUNDEEP
c++gcc
cristian
cristian

Reputation: 526

c++ error when calling method

I have the following code that works in Visual Studio 10 and I want to port it on Linux -> GCC:

parse( v, srcUtf8.begin(), srcUtf8.end() ); <-- ERROR

picojson.h

template <typename Iter> inline std::string parse(value& out, Iter& pos, const Iter& last) 
{
 ...
}

I get this error:

error: no matching function for call to ‘parse(picojson::value&, __gnu_cxx::__normal_iterator<char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, __gnu_cxx::__normal_iterator<char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >)’

note: candidates are: std::string picojson::parse(picojson::value&, Iter&, const Iter&) [with Iter = __gnu_cxx::__normal_iterator<char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >]

Could I get please some help on this ?

Upvotes: 3

Views: 281

Answers (1)

Vlad from Moscow
Vlad from Moscow

Reputation: 311058

The problem is that function parse has the second parameters of type Iter& pos that is a non-constant reference

template <typename Iter> inline std::string parse(value& out, Iter& pos, const Iter& last)

You may not bind a non-const reference to temporary object srcUtf8.begin()

Try the following

auto it = srcUtf8.begin();
parse( v, it, srcUtf8.end() );

Or instead of the type specifier auto write the explicit type of the iterator. For example if it is an iterator of class std::string then

std::string::iterator it = srcUtf8.begin();
parse( v, it, srcUtf8.end() );

Or if srcUtf8 is a constant object then

std::string::const_iterator it = srcUtf8.begin();
parse( v, it, srcUtf8.end() );

As for the MS VC++ 2010 then it has many bugs or its own language extensions that do not satisfy the C++ Standard.

Upvotes: 2

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