gcno file doesn't include uncalled member functions?

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gcno file doesn't include uncalled member funct...
\ Michael Morrell (6 May 2008)
. \ John Love-Jensen (6 May 2008)
. . \ Michael Morrell (7 May 2008)
. . . \ John Love-Jensen (7 May 2008)

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Subject:	gcno file doesn't include uncalled member functions?
Group:	Gcc-help
From:	Michael Morrell
Date:	6 May 2008

It seems that the gcno file produced by gcc when the coverage flags are
given
doesn't include data for a member function defined in a header, but not
called. It seems that it is optimizing away the uncalled member function
even though I am using -O0. Is there another option that I should use?

Here is my test case:

========= Rect.h ===============
class Rect {
public:
Rect(int x, int y) { m_x = x; m_y = y; }
int x() const { return m_x; }
int y() const { return m_y; }

private:
int m_x;
int m_y;
};
================================

======== Main.cpp ==============
include <stdio.h>
#include "Rect.h"

int main()
{
Rect* rect = new Rect(3, 5);

printf("x: %d\n", rect->x());
//printf("y: %d\n", rect->y());
return 0;
}
================================

And I compile this using:
g++ -fprofile-arcs -ftest-coverage -O0 -o rect Main.cpp

With the above call to "rect->y" commented out, the generated Main.gcno
file only lists 2 functions from Rect.h: the constructor and the "x"
function.

Can anyone enlighten me on this behavior?

Thanks,

Michael

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