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Article #1434

overloaded-function-bug

#1434
From: Stefan Kuhlins
Date: Wed, 27 Jan 1993 03:01
54 lines
2179 bytes
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// This programm contains 2 errors, which g++ 2.3.1 does not detect.

#include <iostream.h>
 
void h (float)  { cout << "h1" << endl; }
void h (double) { cout << "h2" << endl; }

void f ()        { cout << "f1" << endl; }
void f (int = 1) { cout << "f2" << endl; }

int main()
{
  h(3);       // error 1, g++ calls h1()
  f();        // error 2, g++ calls f1()
  return 0;
}

/*
error 1: ambiguous call: h ( int )
  choice of h()s:
     h(float );
     h(double );

error 2: ambiguous call: f ()
  choice of f()s:
     f();
     f(int );


g++ output:

# g++ -v gnubug.C
Reading specs from /vol/lang/gcc/lib/gcc-lib/sparc-sun-sunos4.1.2/2.3.1/specs
gcc version 2.3.1
 /vol/lang/gcc/lib/gcc-lib/sparc-sun-sunos4.1.2/2.3.1/cpp -lang-c++ -v -undef -D__GNUC__=2 -D__GNUG__=2 -D__cplusplus -Dsparc -Dsun -Dunix -D__sparc__ -D__sun__ -D__unix__ -D__sparc -D__sun -D__unix gnubug.C /usr/tmp/cca10574.i
GNU CPP version 2.3.1 (sparc)
 /vol/lang/gcc/lib/gcc-lib/sparc-sun-sunos4.1.2/2.3.1/cc1plus /usr/tmp/cca10574.i -quiet -dumpbase gnubug.cc -version -o /usr/tmp/cca10574.s
GNU C++ version 2.3.1 (sparc) compiled by GNU C version 2.3.1.
 as -o /usr/tmp/cca105741.o /usr/tmp/cca10574.s
 /vol/lang/gcc/lib/gcc-lib/sparc-sun-sunos4.1.2/2.3.1/ld -e start -dc -dp /lib/crt0.o -L/vol/lang/gcc/lib/gcc-lib/sparc-sun-sunos4.1.2/2.3.1 -L/vol/lang/gcc/lib /usr/tmp/cca105741.o -lg++ -lgcc -lc -lgcc

*/
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From: kuhlins@anne.wifo.uni-mannheim.de (Stefan Kuhlins)
Newsgroups: gnu.g++.bug
Subject: overloaded-function-bug
Date: 26 Jan 1993 22:01:29 -0500
Organization: GNUs Not Usenet
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