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From: Ozkan Sezer <sezeroz@gmail.com>
To: gdb-patches@sourceware.org
Subject: [ping] [gdbserver] paddress() can truncate its argument
Date: Tue, 20 Jul 2010 17:51:00 -0000	[thread overview]
Message-ID: <AANLkTimkJEMJE6ufr6PeytSn5vyDFWn1-ufFstsp1085@mail.gmail.com> (raw)
In-Reply-To: <AANLkTikm81aBu3owf9tm09oaIJzKLX5h-BmrU6mzFkjo@mail.gmail.com>

PING.
Any objections? Can I apply this change?


On Fri, Jul 16, 2010 at 11:49 PM, Ozkan Sezer <sezeroz@gmail.com> wrote:
> Hi:
>
> Noticed this while messing around with win64 support: paddress() casts
> its CORE_ADDR argument (which is specifically defined as long long in
> gdbserver) to long, probably assuming LP64 convention. For win64, which
> is LLP64, it is not true (sizeof(long) == 4 always) and it truncates
> its argument.
>
> Shouldn't paddress() just return phex_nz() instead, like the following:
>
> Index: utils.c
> ===================================================================
> RCS file: /cvs/src/src/gdb/gdbserver/utils.c,v
> retrieving revision 1.23
> diff -u -p -r1.23 utils.c
> --- utils.c     1 Jun 2010 13:20:52 -0000       1.23
> +++ utils.c     16 Jul 2010 20:41:14 -0000
> @@ -257,17 +257,6 @@ xsnprintf (char *str, size_t size, const
>   return ret;
>  }
>
> -/* Convert a CORE_ADDR into a HEX string, like %lx.
> -   The result is stored in a circular static buffer, NUMCELLS deep.  */
> -
> -char *
> -paddress (CORE_ADDR addr)
> -{
> -  char *str = get_cell ();
> -  xsnprintf (str, CELLSIZE, "%lx", (long) addr);
> -  return str;
> -}
> -
>  static char *
>  decimal2str (char *sign, ULONGEST addr, int width)
>  {
> @@ -372,3 +361,12 @@ phex_nz (ULONGEST l, int sizeof_l)
>
>   return str;
>  }
> +
> +/* Convert a CORE_ADDR into a HEX string, like %lx.
> +   The result is stored in a circular static buffer, NUMCELLS deep.  */
> +
> +char *
> +paddress (CORE_ADDR addr)
> +{
> +  return phex_nz (addr, sizeof (CORE_ADDR));
> +}
>
> Comments?
>
> --
> Ozkan
>

  reply	other threads:[~2010-07-20 17:51 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-07-16 20:49 [RFC] " Ozkan Sezer
2010-07-20 17:51 ` Ozkan Sezer [this message]
2010-07-20 18:00   ` [ping] " Pedro Alves
2010-07-20 18:12     ` Ozkan Sezer

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