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Date: Thu, 9 Apr 98 02:37:54 +0200
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From: Jean-Marc Zucconi <jmz@cabri.obs-besancon.fr>
To: freebsd-hackers@FreeBSD.ORG
Subject: Cryptic ld message (gcc bug?)
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This happens when I compile with "c++ -g -O", but not with only "c++ -g" or
only "c++ -O". What do this means ?

ld: /tmp/ccLf96521.o: unexpected multiple definitions of symbol `this:V25', type 0x27
Ì:484352: Definition of symbol `this:V25' (multiply defined)
ld: /tmp/ccLf96521.o: unexpected multiple definitions of symbol `this:V25', type 0x27
Ì:484352: Definition of symbol `this:V25' (multiply defined)

Here is the source program (the error disapear if you remove the last
3 lines!):
#include <math.h>

class X {
private:
    double **x;
public:
    X () {};
    ~X () {};
    double data (int i, int j) {return x[i][j];}
};

X *D;

main (int argc, char **argv)
{
    double e2, b;
    int i, j, i1, i2;
    D = new X;

    j = 20;
    double y[j];

    i1 = 4; i2 = 8;
    e2 = 2;
    for (i = 0 ; i < j; i++)
	if (D->data (i, 1) < e2)
	    break;
    for (i = i2; i < j; i++) {
	b = D->data(i, 0) - D->data(i1, 0);
	y[i] *= exp (b*b*3);
    }
    for (i = 0; i < i1; i++) {
	b = D->data(i, 0) - D->data(i1, 0);
	y[i] *= exp (b*b*3);
    }
}

Jean-Marc
 _____________________________________________________________________________
 Jean-Marc Zucconi       Observatoire de Besancon       F 25010 Besancon cedex
                   PGP Key: finger jmz@cabri.obs-besancon.fr

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