Re: [RFA 2/2] C++-ify break-catch-throw

[Pedro Alves <palves@redhat.com>]

On 06/04/2017 11:53 PM, Tom Tromey wrote:
> @@ -452,17 +450,14 @@ catch_exception_command_1 (enum exception_event_kind ex_event,
>  			   char *arg_entry,
>  			   int tempflag, int from_tty)
>  {
> -  char *except_rx;
>    const char *cond_string = NULL;
> -  struct cleanup *cleanup;
>    const char *arg = arg_entry;
>  
>    if (!arg)
>      arg = "";
>    arg = skip_spaces_const (arg);
>  
> -  except_rx = extract_exception_regexp (&arg);
> -  cleanup = make_cleanup (xfree, except_rx);
> +  std::string except_rx = extract_exception_regexp (&arg);
>  
>    cond_string = ep_parse_optional_if_clause (&arg);
>  
> @@ -474,10 +469,8 @@ catch_exception_command_1 (enum exception_event_kind ex_event,
>        && ex_event != EX_EVENT_RETHROW)
>      error (_("Unsupported or unknown exception event; cannot catch it"));
>  
> -  handle_gnu_v3_exceptions (tempflag, except_rx, cond_string,
> +  handle_gnu_v3_exceptions (tempflag, std::move (except_rx), cond_string,
>  			    ex_event, from_tty);
> -
> -  discard_cleanups (cleanup);
>  }

Something looks suspicious to me -- compile_rx_or_error returns with
an installed cleanup that calls regfree, and handle_gnu_v3_exceptions
leaves it installed too.

Thanks,
Pedro Alves