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From: Simon Marchi <simark@simark.ca>
To: Tsukasa OI <research_trasio@irq.a4lg.com>,
	Pedro Alves <pedro@palves.net>,
	Joel Brobecker <brobecker@adacore.com>,
	Enze Li <lienze@sourceware.org>
Cc: gdb-patches@sourceware.org
Subject: Re: [PATCH v3] gdb/unittests: PR28413, suppress warnings generated by Gnulib
Date: Mon, 14 Nov 2022 09:02:46 -0500	[thread overview]
Message-ID: <c3f7edf8-dd6d-6d2d-4451-f5d08970f08e@simark.ca> (raw)
In-Reply-To: <93b29e438526cd93b260339a0dd567a0ca04ed87.1666113056.git.research_trasio@irq.a4lg.com>



On 10/18/22 13:11, Tsukasa OI via Gdb-patches wrote:
> Gnulib generates a warning if the system version of certain functions
> are used (to redirect the developer to use Gnulib version).  It caused a
> compiler error when...
> 
> -   Compiled with Clang
> -   -Werror is specified (by default)
> -   C++ standard used by Clang is before C++17 (by default as of 15.0.0)
>     when this unit test is activated.
> 
> This issue is raised as PR28413.
> 
> However, previous proposal to fix this issue (a "fix" to Gnulib):
> <https://lists.gnu.org/archive/html/bug-gnulib/2021-10/msg00003.html>
> was rejected because it ruins the intent of Gnulib warnings.
> 
> So, we need a Binutils/GDB-side solution.
> 
> This commit tries to address this issue on the GDB side.  We have
> "include/diagnostics.h" to disable certain warnings only when necessary.
> 
> This commit suppresses the Gnulib warnings by surrounding entire #include
> block with DIAGNOSTIC_IGNORE_USER_DEFINED_WARNINGS to disable Gnulib-
> generated warnings on all standard C++ header files.
> ---
>  gdb/unittests/string_view-selftests.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/gdb/unittests/string_view-selftests.c b/gdb/unittests/string_view-selftests.c
> index 2d7261d18d3..441d533b54e 100644
> --- a/gdb/unittests/string_view-selftests.c
> +++ b/gdb/unittests/string_view-selftests.c
> @@ -23,6 +23,11 @@
>  
>  #define GNULIB_NAMESPACE gnulib
>  
> +#include "diagnostics.h"
> +
> +DIAGNOSTIC_PUSH
> +DIAGNOSTIC_IGNORE_USER_DEFINED_WARNINGS
> +
>  #include "defs.h"
>  #include "gdbsupport/selftest.h"
>  #include "gdbsupport/gdb_string_view.h"
> @@ -34,6 +39,8 @@
>  #include <fstream>
>  #include <iostream>
>  
> +DIAGNOSTIC_POP
> +
>  /* libstdc++'s testsuite uses VERIFY.  */
>  #define VERIFY SELF_CHECK
>  
> 
> base-commit: 04ea6b63141c43d9e96999e16917358088556fdd


Woops, I merged the v2 version of this patch.  But I think it's the same
code.

Simon

      reply	other threads:[~2022-11-14 14:02 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-09-15  3:10 [PATCH 0/4] gdb: (includes PR28413), Suppress some general warnings if built with Clang Tsukasa OI
2022-09-15  3:10 ` [PATCH 1/4] include: Add macro to ignore -Wuser-defined-warnings Tsukasa OI
2022-09-20 16:36   ` Nick Clifton
2022-09-22 13:02     ` Enze Li
2022-09-15  3:10 ` [PATCH 2/4] include: Add macro to ignore -Wunused-but-set-variable Tsukasa OI
2022-09-15  3:10 ` [PATCH 3/4] gdb/unittests: PR28413, suppress warnings generated by Gnulib Tsukasa OI
2022-09-15  3:10 ` [PATCH 4/4] gdb: Suppress "unused" variable warning on Clang Tsukasa OI
2022-09-22  8:25 ` [PATCH v2 0/4] gdb: (includes PR28413), Suppress some general warnings if built with Clang Tsukasa OI
2022-09-22  8:25   ` [PATCH v2 1/4] include: Add macro to ignore -Wuser-defined-warnings Tsukasa OI
2022-09-22 11:26     ` Nick Clifton
2022-09-22  8:25   ` [PATCH v2 2/4] include: Add macro to ignore -Wunused-but-set-variable Tsukasa OI
2022-09-22 11:27     ` Nick Clifton
2022-09-22  8:25   ` [PATCH v2 3/4] gdb/unittests: PR28413, suppress warnings generated by Gnulib Tsukasa OI
2022-10-18 13:44     ` Enze Li
2022-10-18 16:14       ` Tsukasa OI
2022-09-22  8:25   ` [PATCH v2 4/4] gdb: Suppress "unused" variable warning on Clang Tsukasa OI
2022-10-12 17:36     ` Simon Marchi
2022-10-16 13:37       ` Tsukasa OI
2022-10-17 12:35         ` Simon Marchi
2022-10-18 17:11   ` [PATCH v3] gdb/unittests: PR28413, suppress warnings generated by Gnulib Tsukasa OI
2022-11-14 14:02     ` Simon Marchi [this message]

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