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From: schmidt@zola.ics.uci.edu (Doug Schmidt)
Newsgroups: gnu.g++.bug
Subject: Re: G++ 1.34.1: Bug with function prototypes
Message-ID: <12404@paris.ics.uci.edu>
Date: 21 Apr 89 05:09:26 GMT
References: <8904210150.AA00613@OLIVER.MIT.EDU>
Sender: news@paris.ics.uci.edu
Reply-To: Doug Schmidt <schmidt@zola.ics.uci.edu>
Distribution: gnu
Organization: University of California at Irvine: ICS Dept.
Lines: 55

In article <8904210150.AA00613@OLIVER.MIT.EDU> rfrench@ATHENA.MIT.EDU ("Robert S. French") writes:
++ 
++ The file:
++ 
++ 	void foo(int (*pfri)());
++ 
++ causes g++ 1.34.1 to error out with:
++ 
++ g++ version 1.34.1
++  /mit/gnu/vaxlib/gcc-cpp -+ -v -undef -D__GNU__ -D__GNUG__ -Dvax -Dunix -D__vax_
++ _ -D__unix__ /tmp/foo.c /tmp/cc000608.cpp
++ GNU CPP version 1.34
++  /mit/gnu/vaxlib/gcc-c++ /tmp/cc000608.cpp -quiet -dumpbase /tmp/foo.c -version 
++ -o /tmp/cc000608.s
++ GNU C++ version 1.34.1 (vax) compiled by GNU C version 1.34.
++ /tmp/foo.c:1: `pfri' undeclared, outside of functions
++ /tmp/foo.c:1: bad parameter list specification for function `foo'
++ 
++ 
++ The same file goes through gcc 1.34 fine.

This is a known problem with g++ (see g++.texinfo).  Don't expect a
fix anytime soon.  The work around is as follows for your particular
case:

void foo(auto int (*pfri)());
         ^^^^
         note this...

Yes this is annoying, yes it would be nice if it worked `as expected',
no I don't have a good fix for this, and if you figure one out please
let us know! ;-)

Doug

p.s. Note that a similar problem occurs within functions, i.e.,

foo ()
{
  int (*i)();        
}

also fails with g++.  The fix is the same here too:

foo ()
{
  auto int (*i)();        
}

(or use a typedef).
--
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Is like proclaiming innocence,         | schmidt@ics.uci.edu    |
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