Line numbers reported by pp() do not respond to the reality

[Tim Beaulen <tbscope at gmail dot com>]

When using the following script:

# --- testpp.stp ---
global calls

probe process("/home/kdesystemtap/kdeinstall/lib/kde4/plugins/styles/oxygen.so").statement("drawScrollBarSliderControl@*:*")
{
    if (execname() == "src") {
        calls[pp()] <<< 1;
    }
}

probe end
{
  printf("\n");
  foreach (call in calls) {
    printf("%s\n    calls: %10d\n", call, @count(calls[call]));
  }
}
# --------------------


And running it like this:
sudo stap ./testpp.stp

I get these results:
process("/home/kdesystemtap/kdeinstall/lib/kde4/plugins/styles/oxygen.so").statement("drawScrollBarSliderControl@/home/kdesystemtap/kde/src/trunk/KDE/kdebase/workspace/kstyles/oxygen/oxygenstyle.cpp:5024")
    calls:       2000
process("/home/kdesystemtap/kdeinstall/lib/kde4/plugins/styles/oxygen.so").statement("drawScrollBarSliderControl@/home/kdesystemtap/kde/src/trunk/KDE/kdebase/workspace/kstyles/oxygen/oxygenstyle.cpp:5018")
    calls:       2000
process("/home/kdesystemtap/kdeinstall/lib/kde4/plugins/styles/oxygen.so").statement("drawScrollBarSliderControl@/home/kdesystemtap/kde/src/trunk/KDE/kdebase/workspace/kstyles/oxygen/oxygenstyle.cpp:5011")
    calls:       2000
process("/home/kdesystemtap/kdeinstall/lib/kde4/plugins/styles/oxygen.so").statement("drawScrollBarSliderControl@/home/kdesystemtap/kde/src/trunk/KDE/kdebase/workspace/kstyles/oxygen/oxygenstyle.cpp:5009")
    calls:       2000
process("/home/kdesystemtap/kdeinstall/lib/kde4/plugins/styles/oxygen.so").statement("drawScrollBarSliderControl@/home/kdesystemtap/kde/src/trunk/KDE/kdebase/workspace/kstyles/oxygen/oxygenstyle.cpp:5004")
    calls:       2000
process("/home/kdesystemtap/kdeinstall/lib/kde4/plugins/styles/oxygen.so").statement("drawScrollBarSliderControl@/home/kdesystemtap/kde/src/trunk/KDE/kdebase/workspace/kstyles/oxygen/oxygenstyle.cpp:5003")
    calls:       2000
process("/home/kdesystemtap/kdeinstall/lib/kde4/plugins/styles/oxygen.so").statement("drawScrollBarSliderControl@/home/kdesystemtap/kde/src/trunk/KDE/kdebase/workspace/kstyles/oxygen/oxygenstyle.cpp:5002")
    calls:       2000
process("/home/kdesystemtap/kdeinstall/lib/kde4/plugins/styles/oxygen.so").statement("drawScrollBarSliderControl@/home/kdesystemtap/kde/src/trunk/KDE/kdebase/workspace/kstyles/oxygen/oxygenstyle.cpp:5001")
    calls:       2000
process("/home/kdesystemtap/kdeinstall/lib/kde4/plugins/styles/oxygen.so").statement("drawScrollBarSliderControl@/home/kdesystemtap/kde/src/trunk/KDE/kdebase/workspace/kstyles/oxygen/oxygenstyle.cpp:4998")
    calls:       2000
process("/home/kdesystemtap/kdeinstall/lib/kde4/plugins/styles/oxygen.so").statement("drawScrollBarSliderControl@/home/kdesystemtap/kde/src/trunk/KDE/kdebase/workspace/kstyles/oxygen/oxygenstyle.cpp:4999")
    calls:       2000
process("/home/kdesystemtap/kdeinstall/lib/kde4/plugins/styles/oxygen.so").statement("drawScrollBarSliderControl@/home/kdesystemtap/kde/src/trunk/KDE/kdebase/workspace/kstyles/oxygen/oxygenstyle.cpp:4996")
    calls:       2000
process("/home/kdesystemtap/kdeinstall/lib/kde4/plugins/styles/oxygen.so").statement("drawScrollBarSliderControl@/home/kdesystemtap/kde/src/trunk/KDE/kdebase/workspace/kstyles/oxygen/oxygenstyle.cpp:4995")
    calls:       2000



As you can see, the line numbers start at 4995 and end at 5024.

The actual part of the .cpp file including the line numbers:

4947    bool Style::drawScrollBarSliderControl( const QStyleOption*
option, QPainter* painter, const QWidget* widget ) const
4948    {
4949
4950        // cast option and check
4951        const QStyleOptionSlider *slider = qstyleoption_cast<const
QStyleOptionSlider *>( option );
4952        if( !slider ) return true;
4953
4954        const QRect& r( option->rect );
4955        const QPalette& palette( option->palette );
4956
4957        const State& flags( option->state );
4958        const bool horizontal( flags & State_Horizontal );
4959        const bool enabled( flags&State_Enabled );
4960        const bool mouseOver( enabled && (flags&State_MouseOver) );
4961
4962        // enable animation state
4963        animations().scrollBarEngine().updateState( widget,
enabled && slider && (slider->activeSubControls & SC_ScrollBarSlider)
);
4964
4965        const bool animated( enabled &&
animations().scrollBarEngine().isAnimated( widget, SC_ScrollBarSlider
) );
4966
4967        if( horizontal )
4968        {
4969            if( animated ) renderScrollBarHandle( painter, r,
palette, Qt::Horizontal, mouseOver,
animations().scrollBarEngine().opacity( widget, SC_ScrollBarSlider )
);
4970            else renderScrollBarHandle( painter, r, palette,
Qt::Horizontal, mouseOver );
4971
4972        } else {
4973
4974            if( animated ) renderScrollBarHandle( painter, r,
palette, Qt::Vertical, mouseOver,
animations().scrollBarEngine().opacity( widget, SC_ScrollBarSlider )
);
4975            else renderScrollBarHandle( painter, r, palette,
Qt::Vertical, mouseOver );
4976
4977        }
4978
4979        return true;
4980    }

As you can see, the line numbers differ. Why is that? Maybe I don not
understand the line numbers reported by pp().
I was hoping to make some sort of automatic report generator that
would be able to parse the correct line from the source file, but this
difference makes this impossible.

I am using Systemtap 1.2.