"function already has a body"

Question

What does this mean?

1>c:\users\vitali\documents\visual studio 2010\projects\salam\tools.cpp(107): error C2084: function 'bool readXMLInteger(xmlNodePtr,const char *,int &)' already has a body
1>c:\users\vitali\documents\visual studio 2010\projects\salam\tools.h(52) : see previous definition of 'readXMLInteger'

tools.cpp(107):

bool readXMLInteger(xmlNodePtr node, const char* tag, int32_t& value)
{
    char* nodeValue = (char*)xmlGetProp(node, (xmlChar*)tag);
    if(nodeValue)
    {
        value = atoi(nodeValue);
        xmlFreeXOXL(nodeValue);
        return true;
    }

    return false;
}

tools.h(52)

bool readXMLInteger(xmlNodePtr node, const char* tag, int& value);

Answer 1

Did you use include guards in your original header file?

For example:

#ifndef _TOOLS_H_
#define _TOOLS_H_

... your header body is here ...

#endif

This blocks against re-defining in each cpp where it is included.

Answer 2

It means that at some point your actual code is being re-read into the compile stream, so it seems two attempts at defining (as opposed to declaring) the function.

Suspect something about the way you set up the preprocessor statements.

Answer 3

Perhaps you already found the solution, but for me rebuilding the solution fixed it.

I moved my implementation from the header file to the .cpp file and the .pch file already had this info. So, I had to rebuild to fix this error.