Eclipse CDT shows semantic errors, but compilation is ok

Question

I have installed Eclipse Indigo for C/C++ Linux developers on Ubuntu 10.04 x86.

When I use common predefined macro __BASE_FILE__ Eclipse says Sym

Answer 1

I used #pragma once in my code. This configuration caused me to have the problem:

---fileA.h---

#pragma once
#define MYMACRO(X) func(X)

---fileB.h---

#include "fileA.h"

---fileB.cpp---

#include "fileB.h"

MYMACRO(5)  <---- warning here

I replaced #pragma once with #ifndef #define HEADER_FILE_H #endif, and that fixed the problem.