Code can't find previously defined class

I have a file that has several class delcarations in it. It looks like

Code:

---

class A : public B
{
public:
  virtual int call (void)
  {
    stuff;
    return -1;
  }
};

class C : public D, private E
{
  stuff;
};

int C::foo(void)
{
 A *req;
 return 0;
}

---

When I try to compile, at "A *req" I get identifier "req" is undefined. But req isn't the identifier, A is. So it looks like it can't find A. But why wouldn't it find it. It's in the same file.

Did you forget to put the semicolon on the end of class C?

No, sorry. That was just a typo. I fixed it in the edit.

Post the smallest and simplest program that demonstrates the error. Also, post the exact error message.

Where are D and E? Is this all one file, or did you forget to include something.. or have circular references. Circular references are the hardest to find.

I've given up on this error. I was getting it while compiling ACE. From everything I see, it should be compiling fine. But the error was coming from an examples folder, so it's not core code. So I just commented out the refernce to the makefile that compiles the file giving the error and continued on. The only thing I can think of is it is an issue with my compiler.