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From: Andrew Cagney <cagney@gnu.org>
To: Paul Hilfinger <hilfingr@gnat.com>
Cc: gdb-patches@sources.redhat.com
Subject: Re: [RFA]: Remove warnings from ada-exp.tab.c compilation
Date: Wed, 06 Oct 2004 16:29:00 -0000	[thread overview]
Message-ID: <41641D62.4030805@gnu.org> (raw)
In-Reply-To: <20041006094738.A6034F2C9D@nile.gnat.com>


>>> PS:
>>> +      tempbuf = (char *) realloc (tempbuf, tempbufsize);
>>> the cast is redundant - realloc returns (void *).
> 
> 
> Yeah, well, call it a personal quirk, call it an act of rebellion.
> But when I see an ISO standard that tells me I don't need this conversion
> by saying that
> 
>    "A pointer to void shall have the same representation and 
>     alignment requirements as a pointer to a character type."
> 
> and then tells me IN A FOOTNOTE that 
> 
>    "The same representation and alignment requirements are meant to
>     imply interchangeability as arguments to functions, return values
>     from functions, and members of unions."
> 
> the horror I feel at this shameless confusion of abstraction layers is such
> that I feel compelled to ignore the passages altogether (:->).

You could make up something like an XREALLOC macro (XCREALLOC?) to go 
with XMALLOC et.al.  That might be needed anyway as while a C compiler 
doesn't require the cast, a C++ one does.

whichever,
Andrew



      parent reply	other threads:[~2004-10-06 16:29 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-10-05 10:37 Paul Hilfinger
2004-10-05 19:47 ` Andrew Cagney
2004-10-06  9:31   ` Paul Hilfinger
2004-10-06  9:47   ` Paul Hilfinger
2004-10-06 10:14     ` Andreas Schwab
2004-10-06 16:29     ` Andrew Cagney [this message]

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