Re: [RFA 07/13] Use gdb::def_vector in sparc64-tdep.c

[Simon Marchi <simon dot marchi at polymtl dot ca>]

On 2017-11-02 18:36, Tom Tromey wrote:
> This removes a cleanup from sparc64-tdep.c, replacing it with
> gdb::def_vector.
>
> gdb/ChangeLog
> 2017-11-02  Tom Tromey  <tom@tromey.com>
>
> 	* sparc64-tdep.c (do_examine): Use gdb::def_vector.
> ---
>  gdb/ChangeLog      |  4 ++++
>  gdb/sparc64-tdep.c | 10 +++-------
>  2 files changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/gdb/sparc64-tdep.c b/gdb/sparc64-tdep.c
> index a756834cba..eebfbdf96f 100644
> --- a/gdb/sparc64-tdep.c
> +++ b/gdb/sparc64-tdep.c
> @@ -415,21 +415,17 @@ static void
>  do_examine (CORE_ADDR start, int bcnt)
>  {
>    CORE_ADDR vaddr = adi_normalize_address (start);
> -  struct cleanup *cleanup;
>
>    CORE_ADDR vstart = adi_align_address (vaddr);
>    int cnt = adi_convert_byte_count (vaddr, bcnt, vstart);
> -  unsigned char *buf = (unsigned char *) xmalloc (cnt);
> -  cleanup = make_cleanup (xfree, buf);
> -  int read_cnt = adi_read_versions (vstart, cnt, buf);
> +  gdb::def_vector<unsigned char> buf (cnt);
> +  int read_cnt = adi_read_versions (vstart, cnt, buf.data ());
>    if (read_cnt == -1)
>      error (_("No ADI information"));
>    else if (read_cnt < cnt)
>      error(_("No ADI information at %s"), paddress (target_gdbarch (), 
> vaddr));
>
> -  adi_print_versions (vstart, cnt, buf);
> -
> -  do_cleanups (cleanup);
> +  adi_print_versions (vstart, cnt, buf.data ());
>  }
>
>  static void

It seems to me like the code doesn't use this as text, but binary data.  
So it should probably have used gdb_byte in the first place.  I would 
then suggest using gdb::byte_vector (if you agree that gdb_byte should 
be used here).

Simon