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To: gdb@sources.redhat.com
From:  Vladimir Prus <ghost@cs.msu.su>
Subject:  Re: Formatting of function pointer value
Date: Mon, 11 Jul 2005 07:11:00 -0000
Message-ID:  <dat60d$nu$1@sea.gmane.org>
References:  <dalbrd$tn0$1@sea.gmane.org> <dalep8$5ek$1@sea.gmane.org> <20050708135830.GC17089@nevyn.them.org> <dat0lm$kuh$4@sea.gmane.org>
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Vladimir Prus wrote:

> Daniel Jacobowitz wrote:
> 
>> On Fri, Jul 08, 2005 at 12:50:48PM +0400, Vladimir Prus wrote:
>>> Vladimir Prus wrote:
>>> 
>>> 
>>> > the value of *p3 is printed like this:
>>> > 
>>> >    (gdb) print *p3
>>> >    $1 = {int (int)} 0xb7ee6e9c <__DTOR_END__+4>
>>> 
>>> Even more strange is this:
>>> 
>>>    (gdb) print p3
>>>    $2 = (int (*)(int)) 0xb7ee6e9c <__DTOR_END__+4>
>>>    (gdb) print *p3
>>>    $3 = {int (int)} 0xb7ee6e9c <__DTOR_END__+4>
>>> 
>>> Why does formatting of the type different in the second case, and uses
>>> braces instead of parenthesis?
>> 
>> One is a pointer to function, the other is a function.
> 
> I'm sorry, I don't understand this. Is human user supposed to know that
> '{' starts a function? What harm will it make if parenthesis are used in
> both cases?

BTW, the code in question says:

      /* FIXME, we should consider, at least for ANSI C language,
         eliminating the distinction made between FUNCs and POINTERs to
         FUNCs.  */
      fprintf_filtered (stream, "{");
      type_print (type, "", stream, -1);
      fprintf_filtered (stream, "} ");

Is "FIXME" still relevant?

- Volodya