Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!tc.fluke.com!bezold
From: bezold@tc.fluke.com (Dave Bezold)
Newsgroups: gnu.g++.bug
Subject: (none)
Message-ID: <9002212353.AA00617@sirloin>
Date: 21 Feb 90 23:53:04 GMT
Sender: daemon@tut.cis.ohio-state.edu
Distribution: gnu
Organization: GNUs Not Usenet
Lines: 61

We have discovered the following problem in g++-1.36.1 (gcc version 1.36.1
(based on GCC 1.36)).  This is related to using enum tag names as unique types
in the signatures of overloaded functions.  I realize that this is a new
feature in C++ 2.0 and may not be yet implemented in this version of g++;

Thanks,
Dave Bezold (bezold@fluke.tc.com)

Here is an example program which causes the bug:
++++++++++++++++++++++++++++++++++++bug.cc++++++++++++++++++++++++++++++++++
#include	<stream.h>
#include	<stdlib.h>


enum MagUnits	{uV, mV, V, kV, MV};
enum FreqUnits	{Hz, kHz, MHz};

class SAMple
{
public:
	void set (float, FreqUnits);
	void set (float, MagUnits);
};

void SAMple::set(float f, MagUnits u)
{
	cout << "set(float, MagUnits)\n";
}

void SAMple::set(float f, FreqUnits u)
{
	cout << "set(float, FreqUnits)\n";
}

int main (int argc, char *argv[])
{
	SAMple measurement;

	measurement.set(1.0, MV);
	measurement.set(50.0, MHz);
}
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
On a sun 3, the following output is generated (configured for sun3-os4):

> a.out
set(float, MagUnits)
set(float, MagUnits)


It should be:

> a.out
set(float, MagUnits)
set(float, FreqUnits)

On a sun 4, the following compiler error occurs (configured for sun4-os4):

> g++ bug.cc
/usr/tmp/cca00585.s:115:Unknown pseudo-op /usr/tmp/cca00585.s:115:Rest of line
ignored. 1st junk character valued 48.  /lib/crt0.o: Undefined symbol _main
referenced from text segment