Question

I think I am missing smth back in my theoretical background on this thing. I know there were similar posts but I still do not get it.

I have such a code:

void somefunc1(Word &Key)
{
    somefunc2(Key);
}

void somefunc2(char &char1)
{
    return;
}

compiler generates me an error here:

somefunc2(Key);

[BCC32 Error] Unit1.cpp(830): E2357 Reference initialized with ‘unsigned short’, needs lvalue of type ‘char’

I found out that it is because of the ANSI 2003 regulation on C++ dealing with temporaries and references but I still do not get what is wrong here.

when I do c-style conversion:

somefunc2( *(char*)&Key )

it resolves an issue.

Can anyone hint me what is wrong and why is it wrong?

Answer 1

Temporaries cannot be bound to non-constant references.

You should have written this:

void somefunc2(const char &char1)
{
  return;
}