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Article #1384

templates and const

#1384
From: Frederick Herrmann
Date: Mon, 11 Jan 1993 19:08
37 lines
1215 bytes
I'm having trouble with type unification for templates with const
args.  We are running g++ 2.3.3 under SunOS 4.1.3 and Ultrix 4.2

The FAQ says there are still some problems with templates.  Is this a
real bug or am I doing something wrong?

			Thanks,

				- Fritz
				  fritz@mtl.mit.edu

#include <iostream.h>

// This code produces type unification errors when
// CONST is defined to be const, but works fine when
// compiled with -DNOCONST

#ifdef NOCONST
#  define CONST /*blank*/
#else
#  define CONST const
#endif  

template<class C> void cpy( C* to, CONST C* from)
{
  while ( *to++ = *from++);
}

int main( int argc, char** argv)
{
  char tobuf[9];
  CONST char frombuf[] = "Testing.";

  cpy( tobuf, frombuf);
  
  cout << tobuf << '\n';
}
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Message-ID: <1993Jan11.190809.4504@athena.mit.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!cis.ohio-state.edu!mtl.mit.edu!fritz

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Newsgroups: gnu.g++.bug
Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!cis.ohio-state.edu!mtl.mit.edu!fritz
From: fritz@mtl.mit.edu (Frederick Herrmann)
Subject: templates and const
Message-ID: <1993Jan11.190809.4504@athena.mit.edu>
Sender: gnulists@ai.mit.edu
Organization: MIT Microsystems Technology Laboratories
Distribution: gnu
Date: Mon, 11 Jan 1993 19:08:09 GMT
Approved: bug-g++@prep.ai.mit.edu
Lines: 38