Compile error

[Tomi Hautakoski]

Hi,

while trying to compile the program, the following problem occurs. Can someone point out how this could be fixed:

cd test && make CXX=g++ CXXFLAGS="-g -Wall -Wstrict-prototypes -O2 " SYSTEMLIBS=""
make[1]: Entering directory `/home/thtomi/xmlrpc++0.7/test'
g++ -g -Wall -Wstrict-prototypes -O2  -I../src   Validator.cpp ../libXmlRpc.a   ../libXmlRpc.a -o Validator
cc1plus: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++
Validator.cpp: In member function ‘virtual void ModerateSizeArrayCheck::execute(XmlRpc::XmlRpcValue&, XmlRpc::XmlRpcValue&)’:
Validator.cpp:140: error: ambiguous overload for ‘operator+=’ in ‘s += ((XmlRpc::XmlRpcValue*)((XmlRpc::XmlRpcValue*)params)->XmlRpc::XmlRpcValue::operator[](0))->XmlRpc::XmlRpcValue::operator[]((((XmlRpc::XmlRpcValue*)((XmlRpc::XmlRpcValue*)params)->XmlRpc::XmlRpcValue::operator[](0))->XmlRpc::XmlRpcValue::size() - 1))’
/usr/include/c++/4.2/bits/basic_string.h:762: note: candidates are: std::basic_string<_CharT, _Traits, _Alloc>& std::basic_string<_CharT, _Traits, _Alloc>::operator+=(const std::basic_string<_CharT, _Traits, _Alloc>&) [with _CharT = char, _Traits = std::char_traits<char>, _Alloc = std::allocator<char>]
/usr/include/c++/4.2/bits/basic_string.h:771: note:                 std::basic_string<_CharT, _Traits, _Alloc>& std::basic_string<_CharT, _Traits, _Alloc>::operator+=(const _CharT*) [with _CharT = char, _Traits = std::char_traits<char>, _Alloc = std::allocator<char>] <near match>
/usr/include/c++/4.2/bits/basic_string.h:780: note:                 std::basic_string<_CharT, _Traits, _Alloc>& std::basic_string<_CharT, _Traits, _Alloc>::operator+=(_CharT) [with _CharT = char, _Traits = std::char_traits<char>, _Alloc = std::allocator<char>]
make[1]: *** [Validator] Error 1
make[1]: Leaving directory `/home/thtomi/xmlrpc++0.7/test'
make: *** [tests] Error 2

BR,
Tomi

[Piotrek]

You need to explicitly cast the assignment:

    std::string s = params[0][0];
--> s += static_cast<std::string>(params[0][params[0].size()-1]);
    result = s;

BTW, you can remove -Wstrict-prototypes from the makefile to get rid of the other [annoying] compiler output.

Pete

[Anonymous]

I have the same problem ,   seeking for help

[quique123]

Hi,

can you post your a little bit more information? Something like compiler version, OS, and so on….