From: Simon Marchi <simon.marchi@polymtl.ca>
To: Tom Tromey <tom@tromey.com>,
Simon Marchi via Gdb-patches <gdb-patches@sourceware.org>
Subject: Re: [PATCH 16/16] gdb: make string-like set show commands use std::string variable
Date: Wed, 28 Jul 2021 17:03:42 -0400 [thread overview]
Message-ID: <0edeb3c4-21fe-b368-6c2e-fbb6028eb859@polymtl.ca> (raw)
In-Reply-To: <87o8amchfu.fsf@tromey.com>
On 2021-07-28 4:27 p.m., Tom Tromey wrote:
>>>>>> "Simon" == Simon Marchi via Gdb-patches <gdb-patches@sourceware.org> writes:
>
> Simon> String-like settings (var_string, var_filename, var_optional_filename,
> Simon> var_string_noescape) currently take a pointer to a `char *` storage
> Simon> variable (typically global) that holds the setting's value. I'd like to
> Simon> "mordernize" this by changing them to use an std::string for storage.
>
> It seems like a decent idea to me. I didn't go through the patch. I
> imagine it's mostly fairly mechanical transforms.
Yes, although there could be more subtle cases where empty string vs
nullptr did matter.
> Simon> The add_path function in source.c is really complex and twisted, I'd
> Simon> rather not try to change it to work on an std::string right now.
> Simon> Instead, I added an overload that copies the std:string to a `char *`
> Simon> and back. This means more copying, but this is not used in a hot path
> Simon> at all, so I think it is acceptable.
>
> That seems fine. It might be nice if we had a way to track these little
> cleanup items. Maybe a tag in bugzilla.
I'll try to think adding one when this patch (a subsequent version of
it) gets merged.
> I suppose the main danger of this patch is lingering old-style variables
> in code you couldn't build, say some of the less-supported native
> targets. But, we usually handle those on a best-effort basis anyway.
> And, maybe they don't use this feature.
I did my best to grep and check for those native files I know aren't
compiled, but as you say it's best effort. Like with other
code-base-wide changes, I think that if I forgot any spots, they will be
very easy to fix.
Simon
prev parent reply other threads:[~2021-07-28 21:03 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-14 4:55 [PATCH 00/16] Bunch of commands related cleanups Simon Marchi
2021-07-14 4:55 ` [PATCH 01/16] gdb/testsuite: split gdb.python/py-parameter.exp in procs Simon Marchi
2021-07-14 4:55 ` [PATCH 02/16] gdb.base/setshow.exp: use save_vars to save/restore gdb_prompt Simon Marchi
2021-07-14 4:55 ` [PATCH 03/16] gdb.base/setshow.exp: split in procs Simon Marchi
2021-07-14 4:55 ` [PATCH 04/16] gdb.base/setshow.exp: fix duplicate test name Simon Marchi
2021-07-14 4:55 ` [PATCH 05/16] gdb: un-share set_inferior_cwd declaration Simon Marchi
2021-07-14 4:55 ` [PATCH 06/16] gdb: remove inferior::{argc,argv} Simon Marchi
2021-07-14 4:55 ` [PATCH 07/16] gdb: add setter/getter for inferior arguments Simon Marchi
2021-07-14 4:55 ` [PATCH 08/16] gdb: add setter/getter for inferior cwd Simon Marchi
2021-07-14 4:55 ` [PATCH 09/16] gdb: make inferior::m_args an std::string Simon Marchi
2021-07-14 4:55 ` [PATCH 10/16] gdb: make inferior::m_cwd " Simon Marchi
2021-07-14 4:55 ` [PATCH 11/16] gdb: make inferior::m_terminal " Simon Marchi
2021-07-14 4:55 ` [PATCH 12/16] gdb: rename cfunc to simple_func Simon Marchi
2021-07-14 4:55 ` [PATCH 13/16] gdb: remove cmd_list_element::function::sfunc Simon Marchi
2021-07-28 19:10 ` Tom Tromey
2021-07-28 21:17 ` Simon Marchi
2021-07-29 17:33 ` Tom Tromey
2021-07-14 4:55 ` [PATCH 14/16] gdb/testsuite: test get/set value of unregistered Guile parameter Simon Marchi
2021-07-23 19:42 ` Simon Marchi
2021-07-14 4:55 ` [PATCH 15/16] gdb: make cmd_list_element var an optional union Simon Marchi
2021-07-14 12:08 ` Lancelot SIX
2021-07-14 17:12 ` Lancelot SIX
2021-07-14 19:22 ` Simon Marchi
2021-07-14 23:22 ` Lancelot SIX
2021-07-19 14:32 ` Simon Marchi
2021-07-19 19:52 ` Simon Marchi
2021-07-20 23:03 ` Lancelot SIX
2021-07-23 19:56 ` Simon Marchi
2021-07-23 20:46 ` Lancelot SIX
2021-07-23 21:15 ` Simon Marchi
2021-07-23 22:55 ` Lancelot SIX
2021-07-24 2:04 ` Simon Marchi
2021-07-28 20:13 ` Tom Tromey
2021-07-28 20:45 ` Lancelot SIX
2021-07-29 17:47 ` Tom Tromey
2021-07-29 20:12 ` Lancelot SIX
2021-07-30 2:09 ` Simon Marchi
2021-07-30 17:47 ` Lancelot SIX
2021-07-18 15:44 ` Lancelot SIX
2021-07-19 14:19 ` Simon Marchi
2021-07-19 20:58 ` Lancelot SIX
2021-07-28 19:47 ` Tom Tromey
2021-07-28 20:59 ` Simon Marchi
2021-07-29 17:41 ` Tom Tromey
2021-07-29 17:44 ` Simon Marchi
2021-07-29 17:49 ` Tom Tromey
2021-07-29 18:00 ` Simon Marchi
2021-07-14 4:55 ` [PATCH 16/16] gdb: make string-like set show commands use std::string variable Simon Marchi
2021-07-28 20:27 ` Tom Tromey
2021-07-28 21:03 ` Simon Marchi [this message]
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