Question

I need to have a nested pass by reference.

EDITED TO INCLUDE ACTUAL CODE

Exact error is:

no matching function for call to ‘CLItem::getValue(std::string*&)’

Complete error is:

App/CycCmdLine.cpp: In member function ‘std::string CycCmdLine::getEnvironment()’:
App/CycCmdLine.cpp:245: error: no matching function for call to ‘CycCmdLine::getValue(const char [16], std::string&)’
./../CmdLine/CmdLine.h: In member function ‘bool CmdLine::getValue(std::string, T&) [with T = std::string*]’:
App/CycCmdLine.cpp:384:   instantiated from here
./../CmdLine/CmdLine.h:237: error: no matching function for call to ‘CLItem::getValue(std::string*&)’
./../CmdLine/CmdLine.h:145: note: candidates are: bool CLItem::getValue(bool&)
./../CmdLine/CmdLine.h:146: note:                 bool CLItem::getValue(std::string&)
./../CmdLine/CmdLine.h:147: note:                 bool CLItem::getValue(long unsigned int&)
./../CmdLine/CmdLine.h:148: note:                 bool CLItem::getValue(std::list<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&)
./../CmdLine/CmdLine.h:149: note:                 bool CLItem::getValue(std::list<std::list<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >, std::allocator<std::list<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > > >&)

Updated code:

// initial caller
string CycCmdLine::getEnvironment()
{
    string sRet="";
    do
    {     
        if(hasLogFile())
            {
                string sLogFile="";
                getValue(CYCCMD_CMDSTR_LOGFILE, sLogFile);
                sRet+="\n  -Profiler logfile: "+sLogFile;
            }
    }while(false);
    return(sRet);
}

// CmdLine::getValue function definition (this is in the header file, as a template should be)
template <typename T>
bool CmdLine::getValue(string sName, T &tValue)
{
    bool bRet=false;
    do
    {
    // try to get the iterator
    bool bExists;
    map<string, CLItem*>::iterator itItr;
    bExists=getMapElement(sName, itItr);

        // go ahead and return the value
        if(!itItr->second->getValue(tValue)) { break; }
        bRet=true;
    }while(false);
    return(bRet);
}

bool CLItem::getValue(string& sValue)
{
    bool bRet=false;
    do
    {
        // is this the correct type?
        if(!isType(CLType_STRING)) { break; }

        // return the value
        sValue=m_sValue;
        bRet=true;
    }while(false);
    return(bRet);
}

Answer 1

If we look into this part of the message

./../CmdLine/CmdLine.h: In member function ‘bool CmdLine::getValue(std::string, T&) [with T = std::string*]’:
App/CycCmdLine.cpp:384:   instantiated from here
./../CmdLine/CmdLine.h:237: error: no matching function for call to ‘CLItem::getValue(std::string*&)’

It seems to say that atApp/CycCmdLine.cpp:384 you call getValue with T being a std::string*. This then causes the template to try to call a function that doesn’t exist.

Start investigating this line 384!