[3/3] Add -Wstrict-null-sentinel to gdbsupport/warning.m4

Commit 85f0dd3ce ("[gdb] Fix -Wstrict-null-sentinel warnings") fixed
some violations of -Wstrict-null-sentinel.  If we want to enforce this
warning, I think we should enable it in our warning.m4 file.

gdbsupport/ChangeLog:

	* warning.m4: Add -Wstrict-null-sentinel.
	* configure: Re-generate.

gdbserver/ChangeLog:

	* configure: Re-generate.

gdb/ChangeLog:

	* configure: Re-generate.
---
 gdb/configure         | 3 ++-
 gdbserver/configure   | 3 ++-
 gdbsupport/configure  | 3 ++-
 gdbsupport/warning.m4 | 3 ++-
 4 files changed, 8 insertions(+), 4 deletions(-)

On Mon, Feb 10, 2020 at 10:40 AM Simon Marchi <simon.marchi@efficios.com> wrote:
>
> Commit 85f0dd3ce ("[gdb] Fix -Wstrict-null-sentinel warnings") fixed
> some violations of -Wstrict-null-sentinel.  If we want to enforce this
> warning, I think we should enable it in our warning.m4 file.
>
> gdbsupport/ChangeLog:
>
>         * warning.m4: Add -Wstrict-null-sentinel.
>         * configure: Re-generate.
>
> gdbserver/ChangeLog:
>
>         * configure: Re-generate.
>
> gdb/ChangeLog:
>
>         * configure: Re-generate.
> ---
>  gdb/configure         | 3 ++-
>  gdbserver/configure   | 3 ++-
>  gdbsupport/configure  | 3 ++-
>  gdbsupport/warning.m4 | 3 ++-
>  4 files changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/gdb/configure b/gdb/configure
> index a1d150649729..2ce910c808ce 100755
> --- a/gdb/configure
> +++ b/gdb/configure
> @@ -16111,7 +16111,8 @@ build_warnings="-Wall -Wpointer-arith \
>  -Wdeprecated-copy \
>  -Wdeprecated-copy-dtor \
>  -Wredundant-move \
> --Wmissing-declarations"
> +-Wmissing-declarations \
> +-Wstrict-null-sentinel"
>
>  case "${host}" in
>    *-*-mingw32*)
> diff --git a/gdbserver/configure b/gdbserver/configure
> index 4b9d7e3718fa..bd0e667af69b 100755
> --- a/gdbserver/configure
> +++ b/gdbserver/configure
> @@ -9815,7 +9815,8 @@ build_warnings="-Wall -Wpointer-arith \
>  -Wdeprecated-copy \
>  -Wdeprecated-copy-dtor \
>  -Wredundant-move \
> --Wmissing-declarations"
> +-Wmissing-declarations \
> +-Wstrict-null-sentinel"
>
>  case "${host}" in
>    *-*-mingw32*)
> diff --git a/gdbsupport/configure b/gdbsupport/configure
> index 197749b5d0ca..1f7d72cc5852 100755
> --- a/gdbsupport/configure
> +++ b/gdbsupport/configure
> @@ -10853,7 +10853,8 @@ build_warnings="-Wall -Wpointer-arith \
>  -Wdeprecated-copy \
>  -Wdeprecated-copy-dtor \
>  -Wredundant-move \
> --Wmissing-declarations"
> +-Wmissing-declarations \
> +-Wstrict-null-sentinel"
>
>  case "${host}" in
>    *-*-mingw32*)
> diff --git a/gdbsupport/warning.m4 b/gdbsupport/warning.m4
> index e2b8a43ddbd5..75bc21ca4261 100644
> --- a/gdbsupport/warning.m4
> +++ b/gdbsupport/warning.m4
> @@ -50,7 +50,8 @@ build_warnings="-Wall -Wpointer-arith \
>  -Wdeprecated-copy \
>  -Wdeprecated-copy-dtor \
>  -Wredundant-move \
> --Wmissing-declarations"
> +-Wmissing-declarations \
> +-Wstrict-null-sentinel"

Any thoughts on instead dong:
+-Wstrict-null-sentinel \
+"

so that future changes don't need to change the last line? Helps with blame too.

>
>  case "${host}" in
>    *-*-mingw32*)
> --
> 2.25.0
>

On 2020-02-10 11:42 a.m., Christian Biesinger wrote:
> Any thoughts on instead dong:
> +-Wstrict-null-sentinel \
> +"
> 
> so that future changes don't need to change the last line? Helps with blame too.

Sure, I I'll do that.  I like when we use a comma after the last enumerator in enums
too, for the same reason.

Simon

>>>>> "Simon" == Simon Marchi <simon.marchi@efficios.com> writes:

Simon> On 2020-02-10 11:42 a.m., Christian Biesinger wrote:
>> Any thoughts on instead dong:
>> +-Wstrict-null-sentinel \
>> +"
>> 
>> so that future changes don't need to change the last line? Helps with blame too.

Simon> Sure, I I'll do that.  I like when we use a comma after the last enumerator in enums
Simon> too, for the same reason.

Me too.

Thanks for doing this.  I should have more mail this morning before
writing this same patch :-)

This looks good, please check it all in.

Tom

On 2020-02-11 9:56 a.m., Tom Tromey wrote:
>>>>>> "Simon" == Simon Marchi <simon.marchi@efficios.com> writes:
> 
> Simon> On 2020-02-10 11:42 a.m., Christian Biesinger wrote:
>>> Any thoughts on instead dong:
>>> +-Wstrict-null-sentinel \
>>> +"
>>>
>>> so that future changes don't need to change the last line? Helps with blame too.
> 
> Simon> Sure, I I'll do that.  I like when we use a comma after the last enumerator in enums
> Simon> too, for the same reason.
> 
> Me too.
> 
> Thanks for doing this.  I should have more mail this morning before
> writing this same patch :-)
> 
> This looks good, please check it all in.
> 
> Tom
> 

Thanks, I pushed the series.

Simon