[PATCH] contrib/plugins/execlog: Fix compiler warning

Yao Xingtao via posted 1 patch 1 month, 1 week ago
Patches applied successfully (tree, apply log)
git fetch https://github.com/patchew-project/qemu tags/patchew/20240320020115.18801-1-yaoxt.fnst@fujitsu.com
Maintainers: "Alex Bennée" <alex.bennee@linaro.org>, Alexandre Iooss <erdnaxe@crans.org>, Mahmoud Mandour <ma.mandourr@gmail.com>, Pierrick Bouvier <pierrick.bouvier@linaro.org>
There is a newer version of this series
contrib/plugins/execlog.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
[PATCH] contrib/plugins/execlog: Fix compiler warning
Posted by Yao Xingtao via 1 month, 1 week ago
1. The g_pattern_match_string() is deprecated when glib2 version >= 2.70.
   Use g_pattern_spec_match_string() instead to avoid this problem.

2. The type of second parameter in g_ptr_array_add() is
   'gpointer' {aka 'void *'}, but the type of reg->name is 'const char*'.
   Cast the type of reg->name to 'gpointer' to avoid this problem.

compiler warning message:
/root/qemu/contrib/plugins/execlog.c:330:17: warning: ‘g_pattern_match_string’
is deprecated: Use 'g_pattern_spec_match_string'
instead [-Wdeprecated-declarations]
  330 |                 if (g_pattern_match_string(pat, rd->name) ||
      |                 ^~
In file included from /usr/include/glib-2.0/glib.h:67,
                 from /root/qemu/contrib/plugins/execlog.c:9:
/usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
   57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
      |               ^~~~~~~~~~~~~~~~~~~~~~
/root/qemu/contrib/plugins/execlog.c:331:21: warning: ‘g_pattern_match_string’
is deprecated: Use 'g_pattern_spec_match_string'
instead [-Wdeprecated-declarations]
  331 |                     g_pattern_match_string(pat, rd_lower)) {
      |                     ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
   57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
      |               ^~~~~~~~~~~~~~~~~~~~~~
/root/qemu/contrib/plugins/execlog.c:339:63: warning: passing argument 2 of
‘g_ptr_array_add’ discards ‘const’ qualifier from pointer target type
[-Wdiscarded-qualifiers]
  339 |                             g_ptr_array_add(all_reg_names, reg->name);
      |                                                            ~~~^~~~~~
In file included from /usr/include/glib-2.0/glib.h:33:
/usr/include/glib-2.0/glib/garray.h:198:62: note: expected
‘gpointer’ {aka ‘void *’} but argument is of type ‘const char *’
  198 |                                            gpointer          data);
      |                                            ~~~~~~~~~~~~~~~~~~^~~~

Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
---
 contrib/plugins/execlog.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c
index a1dfd59ab7..41f6774116 100644
--- a/contrib/plugins/execlog.c
+++ b/contrib/plugins/execlog.c
@@ -327,8 +327,13 @@ static GPtrArray *registers_init(int vcpu_index)
             for (int p = 0; p < rmatches->len; p++) {
                 g_autoptr(GPatternSpec) pat = g_pattern_spec_new(rmatches->pdata[p]);
                 g_autofree gchar *rd_lower = g_utf8_strdown(rd->name, -1);
+#if GLIB_VERSION_MAX_ALLOWED < G_ENCODE_VERSION(2, 70)
                 if (g_pattern_match_string(pat, rd->name) ||
                     g_pattern_match_string(pat, rd_lower)) {
+#else
+                if (g_pattern_spec_match_string(pat, rd->name) ||
+                    g_pattern_spec_match_string(pat, rd_lower)) {
+#endif
                     Register *reg = init_vcpu_register(rd);
                     g_ptr_array_add(registers, reg);
 
@@ -336,7 +341,7 @@ static GPtrArray *registers_init(int vcpu_index)
                     if (disas_assist) {
                         g_mutex_lock(&add_reg_name_lock);
                         if (!g_ptr_array_find(all_reg_names, reg->name, NULL)) {
-                            g_ptr_array_add(all_reg_names, reg->name);
+                            g_ptr_array_add(all_reg_names, (gpointer)reg->name);
                         }
                         g_mutex_unlock(&add_reg_name_lock);
                     }
-- 
2.37.3


Re: [PATCH] contrib/plugins/execlog: Fix compiler warning
Posted by Peter Maydell 1 month, 1 week ago
On Wed, 20 Mar 2024 at 02:05, Yao Xingtao via <qemu-devel@nongnu.org> wrote:
>
> 1. The g_pattern_match_string() is deprecated when glib2 version >= 2.70.
>    Use g_pattern_spec_match_string() instead to avoid this problem.
>
> 2. The type of second parameter in g_ptr_array_add() is
>    'gpointer' {aka 'void *'}, but the type of reg->name is 'const char*'.
>    Cast the type of reg->name to 'gpointer' to avoid this problem.
>
> compiler warning message:
> /root/qemu/contrib/plugins/execlog.c:330:17: warning: ‘g_pattern_match_string’
> is deprecated: Use 'g_pattern_spec_match_string'
> instead [-Wdeprecated-declarations]
>   330 |                 if (g_pattern_match_string(pat, rd->name) ||
>       |                 ^~
> In file included from /usr/include/glib-2.0/glib.h:67,
>                  from /root/qemu/contrib/plugins/execlog.c:9:
> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
>    57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
>       |               ^~~~~~~~~~~~~~~~~~~~~~
> /root/qemu/contrib/plugins/execlog.c:331:21: warning: ‘g_pattern_match_string’
> is deprecated: Use 'g_pattern_spec_match_string'
> instead [-Wdeprecated-declarations]
>   331 |                     g_pattern_match_string(pat, rd_lower)) {
>       |                     ^~~~~~~~~~~~~~~~~~~~~~
> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
>    57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
>       |               ^~~~~~~~~~~~~~~~~~~~~~
> /root/qemu/contrib/plugins/execlog.c:339:63: warning: passing argument 2 of
> ‘g_ptr_array_add’ discards ‘const’ qualifier from pointer target type
> [-Wdiscarded-qualifiers]
>   339 |                             g_ptr_array_add(all_reg_names, reg->name);
>       |                                                            ~~~^~~~~~
> In file included from /usr/include/glib-2.0/glib.h:33:
> /usr/include/glib-2.0/glib/garray.h:198:62: note: expected
> ‘gpointer’ {aka ‘void *’} but argument is of type ‘const char *’
>   198 |                                            gpointer          data);
>       |                                            ~~~~~~~~~~~~~~~~~~^~~~
>

Hi; thanks for this patch.

This fixes a bug reported in the bug tracker so we should put

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2210

in the commit message just above your signed-off-by tag.


> Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
> ---
>  contrib/plugins/execlog.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c
> index a1dfd59ab7..41f6774116 100644
> --- a/contrib/plugins/execlog.c
> +++ b/contrib/plugins/execlog.c
> @@ -327,8 +327,13 @@ static GPtrArray *registers_init(int vcpu_index)
>              for (int p = 0; p < rmatches->len; p++) {
>                  g_autoptr(GPatternSpec) pat = g_pattern_spec_new(rmatches->pdata[p]);
>                  g_autofree gchar *rd_lower = g_utf8_strdown(rd->name, -1);
> +#if GLIB_VERSION_MAX_ALLOWED < G_ENCODE_VERSION(2, 70)

Elsewhere we do glib version checks with

#if GLIB_CHECK_VERSION(2, 70, 0)
    code for 2.70.0 and up;
#else
    code for older versions
#endif

so I think we should probably do that here too.

>                  if (g_pattern_match_string(pat, rd->name) ||
>                      g_pattern_match_string(pat, rd_lower)) {
> +#else
> +                if (g_pattern_spec_match_string(pat, rd->name) ||
> +                    g_pattern_spec_match_string(pat, rd_lower)) {
> +#endif

Rather than putting this ifdef in the middle of this function,
I think it would be easier to read if we abstract out a function
which does the pattern matching and whose body calls the right
glib function depending on glib version. We generally call these
functions the same as the glib function but with a _qemu suffix
(compare the ones in include/glib-compat.h), so here that would
be g_pattern_spec_match_string_qemu().

>                      Register *reg = init_vcpu_register(rd);
>                      g_ptr_array_add(registers, reg);
>
> @@ -336,7 +341,7 @@ static GPtrArray *registers_init(int vcpu_index)
>                      if (disas_assist) {
>                          g_mutex_lock(&add_reg_name_lock);
>                          if (!g_ptr_array_find(all_reg_names, reg->name, NULL)) {
> -                            g_ptr_array_add(all_reg_names, reg->name);
> +                            g_ptr_array_add(all_reg_names, (gpointer)reg->name);
>                          }
>                          g_mutex_unlock(&add_reg_name_lock);
>                      }

thanks
-- PMM
RE: [PATCH] contrib/plugins/execlog: Fix compiler warning
Posted by Xingtao Yao (Fujitsu) via 1 month ago
Pete:
Thanks for your comment.

I also find a similar patch written by Pierrick: https://lore.kernel.org/qemu-devel/20240118032400.3762658-15-pierrick.bouvier@linaro.org/
but for some reason, the patch was not merged yet.

shall I need to continue tracking the fixes of this bug?

> -----Original Message-----
> From: Peter Maydell <peter.maydell@linaro.org>
> Sent: Friday, March 22, 2024 7:50 PM
> To: Yao, Xingtao/姚 幸涛 <yaoxt.fnst@fujitsu.com>
> Cc: alex.bennee@linaro.org; erdnaxe@crans.org; ma.mandourr@gmail.com;
> pierrick.bouvier@linaro.org; qemu-devel@nongnu.org
> Subject: Re: [PATCH] contrib/plugins/execlog: Fix compiler warning
> 
> On Wed, 20 Mar 2024 at 02:05, Yao Xingtao via <qemu-devel@nongnu.org>
> wrote:
> >
> > 1. The g_pattern_match_string() is deprecated when glib2 version >= 2.70.
> >    Use g_pattern_spec_match_string() instead to avoid this problem.
> >
> > 2. The type of second parameter in g_ptr_array_add() is
> >    'gpointer' {aka 'void *'}, but the type of reg->name is 'const char*'.
> >    Cast the type of reg->name to 'gpointer' to avoid this problem.
> >
> > compiler warning message:
> > /root/qemu/contrib/plugins/execlog.c:330:17: warning:
> ‘g_pattern_match_string’
> > is deprecated: Use 'g_pattern_spec_match_string'
> > instead [-Wdeprecated-declarations]
> >   330 |                 if (g_pattern_match_string(pat, rd->name) ||
> >       |                 ^~
> > In file included from /usr/include/glib-2.0/glib.h:67,
> >                  from /root/qemu/contrib/plugins/execlog.c:9:
> > /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
> >    57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
> >       |               ^~~~~~~~~~~~~~~~~~~~~~
> > /root/qemu/contrib/plugins/execlog.c:331:21: warning:
> ‘g_pattern_match_string’
> > is deprecated: Use 'g_pattern_spec_match_string'
> > instead [-Wdeprecated-declarations]
> >   331 |                     g_pattern_match_string(pat, rd_lower)) {
> >       |                     ^~~~~~~~~~~~~~~~~~~~~~
> > /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
> >    57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
> >       |               ^~~~~~~~~~~~~~~~~~~~~~
> > /root/qemu/contrib/plugins/execlog.c:339:63: warning: passing argument
> > 2 of ‘g_ptr_array_add’ discards ‘const’ qualifier from pointer target
> > type [-Wdiscarded-qualifiers]
> >   339 |                             g_ptr_array_add(all_reg_names,
> reg->name);
> >       |
> ~~~^~~~~~
> > In file included from /usr/include/glib-2.0/glib.h:33:
> > /usr/include/glib-2.0/glib/garray.h:198:62: note: expected ‘gpointer’
> > {aka ‘void *’} but argument is of type ‘const char *’
> >   198 |                                            gpointer
> data);
> >       |
> ~~~~~~~~~~~~~~~~~~^~~~
> >
> 
> Hi; thanks for this patch.
> 
> This fixes a bug reported in the bug tracker so we should put
> 
> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2210
> 
> in the commit message just above your signed-off-by tag.
> 
> 
> > Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
I will if needed.

> > ---
> >  contrib/plugins/execlog.c | 7 ++++++-
> >  1 file changed, 6 insertions(+), 1 deletion(-)
> >
> > diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c
> > index a1dfd59ab7..41f6774116 100644
> > --- a/contrib/plugins/execlog.c
> > +++ b/contrib/plugins/execlog.c
> > @@ -327,8 +327,13 @@ static GPtrArray *registers_init(int vcpu_index)
> >              for (int p = 0; p < rmatches->len; p++) {
> >                  g_autoptr(GPatternSpec) pat =
> g_pattern_spec_new(rmatches->pdata[p]);
> >                  g_autofree gchar *rd_lower = g_utf8_strdown(rd->name,
> > -1);
> > +#if GLIB_VERSION_MAX_ALLOWED < G_ENCODE_VERSION(2, 70)
> 
> Elsewhere we do glib version checks with
> 
> #if GLIB_CHECK_VERSION(2, 70, 0)
>     code for 2.70.0 and up;
> #else
>     code for older versions
> #endif
> 
> so I think we should probably do that here too.
> 
> >                  if (g_pattern_match_string(pat, rd->name) ||
> >                      g_pattern_match_string(pat, rd_lower)) {
> > +#else
> > +                if (g_pattern_spec_match_string(pat, rd->name) ||
> > +                    g_pattern_spec_match_string(pat, rd_lower)) {
> > +#endif
thanks, I got it.

> 
> Rather than putting this ifdef in the middle of this function, I think it would be
> easier to read if we abstract out a function which does the pattern matching
> and whose body calls the right glib function depending on glib version. We
> generally call these functions the same as the glib function but with a _qemu
> suffix (compare the ones in include/glib-compat.h), so here that would be
> g_pattern_spec_match_string_qemu().
> 
> >                      Register *reg = init_vcpu_register(rd);
> >                      g_ptr_array_add(registers, reg);
> >
> > @@ -336,7 +341,7 @@ static GPtrArray *registers_init(int vcpu_index)
> >                      if (disas_assist) {
> >                          g_mutex_lock(&add_reg_name_lock);
> >                          if (!g_ptr_array_find(all_reg_names, reg->name,
> NULL)) {
> > -                            g_ptr_array_add(all_reg_names, reg->name);
> > +                            g_ptr_array_add(all_reg_names,
> > + (gpointer)reg->name);
> >                          }
> >                          g_mutex_unlock(&add_reg_name_lock);
> >                      }
> 
I think it's not worth adding this to glib-compat.h too.

> thanks
> -- PMM

thanks
Xingtao
Re: [PATCH] contrib/plugins/execlog: Fix compiler warning
Posted by Pierrick Bouvier 1 month ago
On 3/25/24 07:00, Xingtao Yao (Fujitsu) wrote:
> Pete:
> Thanks for your comment.
> 
> I also find a similar patch written by Pierrick: https://lore.kernel.org/qemu-devel/20240118032400.3762658-15-pierrick.bouvier@linaro.org/
> but for some reason, the patch was not merged yet.
> 
> shall I need to continue tracking the fixes of this bug?
>

Hi Xingtao,

you're doing the right thing here. In my original patch, there was no 
consideration for backward compatibility, to the opposite of what you did.

Alex will be out for several weeks, so it might take some time to get 
this merged, but I'm definitely voting for this 👍.

Pierrick

>> -----Original Message-----
>> From: Peter Maydell <peter.maydell@linaro.org>
>> Sent: Friday, March 22, 2024 7:50 PM
>> To: Yao, Xingtao/姚 幸涛 <yaoxt.fnst@fujitsu.com>
>> Cc: alex.bennee@linaro.org; erdnaxe@crans.org; ma.mandourr@gmail.com;
>> pierrick.bouvier@linaro.org; qemu-devel@nongnu.org
>> Subject: Re: [PATCH] contrib/plugins/execlog: Fix compiler warning
>>
>> On Wed, 20 Mar 2024 at 02:05, Yao Xingtao via <qemu-devel@nongnu.org>
>> wrote:
>>>
>>> 1. The g_pattern_match_string() is deprecated when glib2 version >= 2.70.
>>>     Use g_pattern_spec_match_string() instead to avoid this problem.
>>>
>>> 2. The type of second parameter in g_ptr_array_add() is
>>>     'gpointer' {aka 'void *'}, but the type of reg->name is 'const char*'.
>>>     Cast the type of reg->name to 'gpointer' to avoid this problem.
>>>
>>> compiler warning message:
>>> /root/qemu/contrib/plugins/execlog.c:330:17: warning:
>> ‘g_pattern_match_string’
>>> is deprecated: Use 'g_pattern_spec_match_string'
>>> instead [-Wdeprecated-declarations]
>>>    330 |                 if (g_pattern_match_string(pat, rd->name) ||
>>>        |                 ^~
>>> In file included from /usr/include/glib-2.0/glib.h:67,
>>>                   from /root/qemu/contrib/plugins/execlog.c:9:
>>> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
>>>     57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
>>>        |               ^~~~~~~~~~~~~~~~~~~~~~
>>> /root/qemu/contrib/plugins/execlog.c:331:21: warning:
>> ‘g_pattern_match_string’
>>> is deprecated: Use 'g_pattern_spec_match_string'
>>> instead [-Wdeprecated-declarations]
>>>    331 |                     g_pattern_match_string(pat, rd_lower)) {
>>>        |                     ^~~~~~~~~~~~~~~~~~~~~~
>>> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
>>>     57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
>>>        |               ^~~~~~~~~~~~~~~~~~~~~~
>>> /root/qemu/contrib/plugins/execlog.c:339:63: warning: passing argument
>>> 2 of ‘g_ptr_array_add’ discards ‘const’ qualifier from pointer target
>>> type [-Wdiscarded-qualifiers]
>>>    339 |                             g_ptr_array_add(all_reg_names,
>> reg->name);
>>>        |
>> ~~~^~~~~~
>>> In file included from /usr/include/glib-2.0/glib.h:33:
>>> /usr/include/glib-2.0/glib/garray.h:198:62: note: expected ‘gpointer’
>>> {aka ‘void *’} but argument is of type ‘const char *’
>>>    198 |                                            gpointer
>> data);
>>>        |
>> ~~~~~~~~~~~~~~~~~~^~~~
>>>
>>
>> Hi; thanks for this patch.
>>
>> This fixes a bug reported in the bug tracker so we should put
>>
>> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2210
>>
>> in the commit message just above your signed-off-by tag.
>>
>>
>>> Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
> I will if needed.
> 
>>> ---
>>>   contrib/plugins/execlog.c | 7 ++++++-
>>>   1 file changed, 6 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c
>>> index a1dfd59ab7..41f6774116 100644
>>> --- a/contrib/plugins/execlog.c
>>> +++ b/contrib/plugins/execlog.c
>>> @@ -327,8 +327,13 @@ static GPtrArray *registers_init(int vcpu_index)
>>>               for (int p = 0; p < rmatches->len; p++) {
>>>                   g_autoptr(GPatternSpec) pat =
>> g_pattern_spec_new(rmatches->pdata[p]);
>>>                   g_autofree gchar *rd_lower = g_utf8_strdown(rd->name,
>>> -1);
>>> +#if GLIB_VERSION_MAX_ALLOWED < G_ENCODE_VERSION(2, 70)
>>
>> Elsewhere we do glib version checks with
>>
>> #if GLIB_CHECK_VERSION(2, 70, 0)
>>      code for 2.70.0 and up;
>> #else
>>      code for older versions
>> #endif
>>
>> so I think we should probably do that here too.
>>
>>>                   if (g_pattern_match_string(pat, rd->name) ||
>>>                       g_pattern_match_string(pat, rd_lower)) {
>>> +#else
>>> +                if (g_pattern_spec_match_string(pat, rd->name) ||
>>> +                    g_pattern_spec_match_string(pat, rd_lower)) {
>>> +#endif
> thanks, I got it.
> 
>>
>> Rather than putting this ifdef in the middle of this function, I think it would be
>> easier to read if we abstract out a function which does the pattern matching
>> and whose body calls the right glib function depending on glib version. We
>> generally call these functions the same as the glib function but with a _qemu
>> suffix (compare the ones in include/glib-compat.h), so here that would be
>> g_pattern_spec_match_string_qemu().
>>
>>>                       Register *reg = init_vcpu_register(rd);
>>>                       g_ptr_array_add(registers, reg);
>>>
>>> @@ -336,7 +341,7 @@ static GPtrArray *registers_init(int vcpu_index)
>>>                       if (disas_assist) {
>>>                           g_mutex_lock(&add_reg_name_lock);
>>>                           if (!g_ptr_array_find(all_reg_names, reg->name,
>> NULL)) {
>>> -                            g_ptr_array_add(all_reg_names, reg->name);
>>> +                            g_ptr_array_add(all_reg_names,
>>> + (gpointer)reg->name);
>>>                           }
>>>                           g_mutex_unlock(&add_reg_name_lock);
>>>                       }
>>
> I think it's not worth adding this to glib-compat.h too.
> 
>> thanks
>> -- PMM
> 
> thanks
> Xingtao
RE: [PATCH] contrib/plugins/execlog: Fix compiler warning
Posted by Xingtao Yao (Fujitsu) via 1 month ago
Hi Pierrick,

thanks for your reply,  and I will modify and push the patch later.

thanks
Xingtao

> -----Original Message-----
> From: Pierrick Bouvier <pierrick.bouvier@linaro.org>
> Sent: Monday, March 25, 2024 12:31 PM
> To: Yao, Xingtao/姚 幸涛 <yaoxt.fnst@fujitsu.com>; Peter Maydell
> <peter.maydell@linaro.org>
> Cc: alex.bennee@linaro.org; erdnaxe@crans.org; ma.mandourr@gmail.com;
> qemu-devel@nongnu.org
> Subject: Re: [PATCH] contrib/plugins/execlog: Fix compiler warning
> 
> On 3/25/24 07:00, Xingtao Yao (Fujitsu) wrote:
> > Pete:
> > Thanks for your comment.
> >
> > I also find a similar patch written by Pierrick:
> > https://lore.kernel.org/qemu-devel/20240118032400.3762658-15-pierrick.
> > bouvier@linaro.org/ but for some reason, the patch was not merged yet.
> >
> > shall I need to continue tracking the fixes of this bug?
> >
> 
> Hi Xingtao,
> 
> you're doing the right thing here. In my original patch, there was no
> consideration for backward compatibility, to the opposite of what you did.
> 
> Alex will be out for several weeks, so it might take some time to get this merged,
> but I'm definitely voting for this 👍.
> 
> Pierrick
> 
> >> -----Original Message-----
> >> From: Peter Maydell <peter.maydell@linaro.org>
> >> Sent: Friday, March 22, 2024 7:50 PM
> >> To: Yao, Xingtao/姚 幸涛 <yaoxt.fnst@fujitsu.com>
> >> Cc: alex.bennee@linaro.org; erdnaxe@crans.org; ma.mandourr@gmail.com;
> >> pierrick.bouvier@linaro.org; qemu-devel@nongnu.org
> >> Subject: Re: [PATCH] contrib/plugins/execlog: Fix compiler warning
> >>
> >> On Wed, 20 Mar 2024 at 02:05, Yao Xingtao via <qemu-devel@nongnu.org>
> >> wrote:
> >>>
> >>> 1. The g_pattern_match_string() is deprecated when glib2 version >=
> 2.70.
> >>>     Use g_pattern_spec_match_string() instead to avoid this problem.
> >>>
> >>> 2. The type of second parameter in g_ptr_array_add() is
> >>>     'gpointer' {aka 'void *'}, but the type of reg->name is 'const char*'.
> >>>     Cast the type of reg->name to 'gpointer' to avoid this problem.
> >>>
> >>> compiler warning message:
> >>> /root/qemu/contrib/plugins/execlog.c:330:17: warning:
> >> ‘g_pattern_match_string’
> >>> is deprecated: Use 'g_pattern_spec_match_string'
> >>> instead [-Wdeprecated-declarations]
> >>>    330 |                 if (g_pattern_match_string(pat, rd->name) ||
> >>>        |                 ^~
> >>> In file included from /usr/include/glib-2.0/glib.h:67,
> >>>                   from /root/qemu/contrib/plugins/execlog.c:9:
> >>> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
> >>>     57 | gboolean      g_pattern_match_string   (GPatternSpec
> *pspec,
> >>>        |               ^~~~~~~~~~~~~~~~~~~~~~
> >>> /root/qemu/contrib/plugins/execlog.c:331:21: warning:
> >> ‘g_pattern_match_string’
> >>> is deprecated: Use 'g_pattern_spec_match_string'
> >>> instead [-Wdeprecated-declarations]
> >>>    331 |                     g_pattern_match_string(pat, rd_lower)) {
> >>>        |                     ^~~~~~~~~~~~~~~~~~~~~~
> >>> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
> >>>     57 | gboolean      g_pattern_match_string   (GPatternSpec
> *pspec,
> >>>        |               ^~~~~~~~~~~~~~~~~~~~~~
> >>> /root/qemu/contrib/plugins/execlog.c:339:63: warning: passing
> >>> argument
> >>> 2 of ‘g_ptr_array_add’ discards ‘const’ qualifier from pointer
> >>> target type [-Wdiscarded-qualifiers]
> >>>    339 |                             g_ptr_array_add(all_reg_names,
> >> reg->name);
> >>>        |
> >> ~~~^~~~~~
> >>> In file included from /usr/include/glib-2.0/glib.h:33:
> >>> /usr/include/glib-2.0/glib/garray.h:198:62: note: expected ‘gpointer’
> >>> {aka ‘void *’} but argument is of type ‘const char *’
> >>>    198 |                                            gpointer
> >> data);
> >>>        |
> >> ~~~~~~~~~~~~~~~~~~^~~~
> >>>
> >>
> >> Hi; thanks for this patch.
> >>
> >> This fixes a bug reported in the bug tracker so we should put
> >>
> >> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2210
> >>
> >> in the commit message just above your signed-off-by tag.
> >>
> >>
> >>> Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
> > I will if needed.
> >
> >>> ---
> >>>   contrib/plugins/execlog.c | 7 ++++++-
> >>>   1 file changed, 6 insertions(+), 1 deletion(-)
> >>>
> >>> diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c
> >>> index a1dfd59ab7..41f6774116 100644
> >>> --- a/contrib/plugins/execlog.c
> >>> +++ b/contrib/plugins/execlog.c
> >>> @@ -327,8 +327,13 @@ static GPtrArray *registers_init(int vcpu_index)
> >>>               for (int p = 0; p < rmatches->len; p++) {
> >>>                   g_autoptr(GPatternSpec) pat =
> >> g_pattern_spec_new(rmatches->pdata[p]);
> >>>                   g_autofree gchar *rd_lower =
> >>> g_utf8_strdown(rd->name, -1);
> >>> +#if GLIB_VERSION_MAX_ALLOWED < G_ENCODE_VERSION(2, 70)
> >>
> >> Elsewhere we do glib version checks with
> >>
> >> #if GLIB_CHECK_VERSION(2, 70, 0)
> >>      code for 2.70.0 and up;
> >> #else
> >>      code for older versions
> >> #endif
> >>
> >> so I think we should probably do that here too.
> >>
> >>>                   if (g_pattern_match_string(pat, rd->name) ||
> >>>                       g_pattern_match_string(pat, rd_lower)) {
> >>> +#else
> >>> +                if (g_pattern_spec_match_string(pat, rd->name) ||
> >>> +                    g_pattern_spec_match_string(pat, rd_lower)) {
> >>> +#endif
> > thanks, I got it.
> >
> >>
> >> Rather than putting this ifdef in the middle of this function, I
> >> think it would be easier to read if we abstract out a function which
> >> does the pattern matching and whose body calls the right glib
> >> function depending on glib version. We generally call these functions
> >> the same as the glib function but with a _qemu suffix (compare the
> >> ones in include/glib-compat.h), so here that would be
> g_pattern_spec_match_string_qemu().
> >>
> >>>                       Register *reg = init_vcpu_register(rd);
> >>>                       g_ptr_array_add(registers, reg);
> >>>
> >>> @@ -336,7 +341,7 @@ static GPtrArray *registers_init(int vcpu_index)
> >>>                       if (disas_assist) {
> >>>                           g_mutex_lock(&add_reg_name_lock);
> >>>                           if (!g_ptr_array_find(all_reg_names,
> >>> reg->name,
> >> NULL)) {
> >>> -                            g_ptr_array_add(all_reg_names,
> reg->name);
> >>> +                            g_ptr_array_add(all_reg_names,
> >>> + (gpointer)reg->name);
> >>>                           }
> >>>                           g_mutex_unlock(&add_reg_name_lock);
> >>>                       }
> >>
> > I think it's not worth adding this to glib-compat.h too.
> >
> >> thanks
> >> -- PMM
> >
> > thanks
> > Xingtao
[PATCH v3] contrib/plugins/execlog: Fix compiler warning
Posted by Yao Xingtao via 1 month ago
1. The g_pattern_match_string() is deprecated when glib2 version >= 2.70.
   Use g_pattern_spec_match_string() instead to avoid this problem.

2. The type of second parameter in g_ptr_array_add() is
   'gpointer' {aka 'void *'}, but the type of reg->name is 'const char*'.
   Cast the type of reg->name to 'gpointer' to avoid this problem.

compiler warning message:
/root/qemu/contrib/plugins/execlog.c:330:17: warning: ‘g_pattern_match_string’
is deprecated: Use 'g_pattern_spec_match_string'
instead [-Wdeprecated-declarations]
  330 |                 if (g_pattern_match_string(pat, rd->name) ||
      |                 ^~
In file included from /usr/include/glib-2.0/glib.h:67,
                 from /root/qemu/contrib/plugins/execlog.c:9:
/usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
   57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
      |               ^~~~~~~~~~~~~~~~~~~~~~
/root/qemu/contrib/plugins/execlog.c:331:21: warning: ‘g_pattern_match_string’
is deprecated: Use 'g_pattern_spec_match_string'
instead [-Wdeprecated-declarations]
  331 |                     g_pattern_match_string(pat, rd_lower)) {
      |                     ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
   57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
      |               ^~~~~~~~~~~~~~~~~~~~~~
/root/qemu/contrib/plugins/execlog.c:339:63: warning: passing argument 2 of
‘g_ptr_array_add’ discards ‘const’ qualifier from pointer target type
[-Wdiscarded-qualifiers]
  339 |                             g_ptr_array_add(all_reg_names, reg->name);
      |                                                            ~~~^~~~~~
In file included from /usr/include/glib-2.0/glib.h:33:
/usr/include/glib-2.0/glib/garray.h:198:62: note: expected
‘gpointer’ {aka ‘void *’} but argument is of type ‘const char *’
  198 |                                            gpointer          data);
      |                                            ~~~~~~~~~~~~~~~~~~^~~~

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2210
Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
---
 contrib/plugins/execlog.c | 24 +++++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c
index a1dfd59ab7..fab18113d4 100644
--- a/contrib/plugins/execlog.c
+++ b/contrib/plugins/execlog.c
@@ -311,6 +311,24 @@ static Register *init_vcpu_register(qemu_plugin_reg_descriptor *desc)
     return reg;
 }
 
+/*
+ * g_pattern_match_string has been deprecated in Glib since 2.70 and
+ * will complain about it if you try to use it. Fortunately the
+ * signature of both functions is the same making it easy to work
+ * around.
+ */
+static inline
+gboolean g_pattern_spec_match_string_qemu(GPatternSpec *pspec,
+                                          const gchar *string)
+{
+#if GLIB_CHECK_VERSION(2, 70, 0)
+    return g_pattern_spec_match_string(pspec, string);
+#else
+    return g_pattern_match_string(pspec, string);
+#endif
+};
+#define g_pattern_spec_match_string(p, s) g_pattern_spec_match_string_qemu(p, s)
+
 static GPtrArray *registers_init(int vcpu_index)
 {
     g_autoptr(GPtrArray) registers = g_ptr_array_new();
@@ -327,8 +345,8 @@ static GPtrArray *registers_init(int vcpu_index)
             for (int p = 0; p < rmatches->len; p++) {
                 g_autoptr(GPatternSpec) pat = g_pattern_spec_new(rmatches->pdata[p]);
                 g_autofree gchar *rd_lower = g_utf8_strdown(rd->name, -1);
-                if (g_pattern_match_string(pat, rd->name) ||
-                    g_pattern_match_string(pat, rd_lower)) {
+                if (g_pattern_spec_match_string(pat, rd->name) ||
+                    g_pattern_spec_match_string(pat, rd_lower)) {
                     Register *reg = init_vcpu_register(rd);
                     g_ptr_array_add(registers, reg);
 
@@ -336,7 +354,7 @@ static GPtrArray *registers_init(int vcpu_index)
                     if (disas_assist) {
                         g_mutex_lock(&add_reg_name_lock);
                         if (!g_ptr_array_find(all_reg_names, reg->name, NULL)) {
-                            g_ptr_array_add(all_reg_names, reg->name);
+                            g_ptr_array_add(all_reg_names, (gpointer)reg->name);
                         }
                         g_mutex_unlock(&add_reg_name_lock);
                     }
-- 
2.37.3


Re: [PATCH v3] contrib/plugins/execlog: Fix compiler warning
Posted by Pierrick Bouvier 1 month ago
On 3/26/24 05:52, Yao Xingtao wrote:
> 1. The g_pattern_match_string() is deprecated when glib2 version >= 2.70.
>     Use g_pattern_spec_match_string() instead to avoid this problem.
> 
> 2. The type of second parameter in g_ptr_array_add() is
>     'gpointer' {aka 'void *'}, but the type of reg->name is 'const char*'.
>     Cast the type of reg->name to 'gpointer' to avoid this problem.
> 
> compiler warning message:
> /root/qemu/contrib/plugins/execlog.c:330:17: warning: ‘g_pattern_match_string’
> is deprecated: Use 'g_pattern_spec_match_string'
> instead [-Wdeprecated-declarations]
>    330 |                 if (g_pattern_match_string(pat, rd->name) ||
>        |                 ^~
> In file included from /usr/include/glib-2.0/glib.h:67,
>                   from /root/qemu/contrib/plugins/execlog.c:9:
> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
>     57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
>        |               ^~~~~~~~~~~~~~~~~~~~~~
> /root/qemu/contrib/plugins/execlog.c:331:21: warning: ‘g_pattern_match_string’
> is deprecated: Use 'g_pattern_spec_match_string'
> instead [-Wdeprecated-declarations]
>    331 |                     g_pattern_match_string(pat, rd_lower)) {
>        |                     ^~~~~~~~~~~~~~~~~~~~~~
> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
>     57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
>        |               ^~~~~~~~~~~~~~~~~~~~~~
> /root/qemu/contrib/plugins/execlog.c:339:63: warning: passing argument 2 of
> ‘g_ptr_array_add’ discards ‘const’ qualifier from pointer target type
> [-Wdiscarded-qualifiers]
>    339 |                             g_ptr_array_add(all_reg_names, reg->name);
>        |                                                            ~~~^~~~~~
> In file included from /usr/include/glib-2.0/glib.h:33:
> /usr/include/glib-2.0/glib/garray.h:198:62: note: expected
> ‘gpointer’ {aka ‘void *’} but argument is of type ‘const char *’
>    198 |                                            gpointer          data);
>        |                                            ~~~~~~~~~~~~~~~~~~^~~~
> 
> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2210
> Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
> ---
>   contrib/plugins/execlog.c | 24 +++++++++++++++++++++---
>   1 file changed, 21 insertions(+), 3 deletions(-)
> 
> diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c
> index a1dfd59ab7..fab18113d4 100644
> --- a/contrib/plugins/execlog.c
> +++ b/contrib/plugins/execlog.c
> @@ -311,6 +311,24 @@ static Register *init_vcpu_register(qemu_plugin_reg_descriptor *desc)
>       return reg;
>   }
>   
> +/*
> + * g_pattern_match_string has been deprecated in Glib since 2.70 and
> + * will complain about it if you try to use it. Fortunately the
> + * signature of both functions is the same making it easy to work
> + * around.
> + */
> +static inline
> +gboolean g_pattern_spec_match_string_qemu(GPatternSpec *pspec,
> +                                          const gchar *string)
> +{
> +#if GLIB_CHECK_VERSION(2, 70, 0)
> +    return g_pattern_spec_match_string(pspec, string);
> +#else
> +    return g_pattern_match_string(pspec, string);
> +#endif
> +};
> +#define g_pattern_spec_match_string(p, s) g_pattern_spec_match_string_qemu(p, s)
> +
>   static GPtrArray *registers_init(int vcpu_index)
>   {
>       g_autoptr(GPtrArray) registers = g_ptr_array_new();
> @@ -327,8 +345,8 @@ static GPtrArray *registers_init(int vcpu_index)
>               for (int p = 0; p < rmatches->len; p++) {
>                   g_autoptr(GPatternSpec) pat = g_pattern_spec_new(rmatches->pdata[p]);
>                   g_autofree gchar *rd_lower = g_utf8_strdown(rd->name, -1);
> -                if (g_pattern_match_string(pat, rd->name) ||
> -                    g_pattern_match_string(pat, rd_lower)) {
> +                if (g_pattern_spec_match_string(pat, rd->name) ||
> +                    g_pattern_spec_match_string(pat, rd_lower)) {
>                       Register *reg = init_vcpu_register(rd);
>                       g_ptr_array_add(registers, reg);
>   
> @@ -336,7 +354,7 @@ static GPtrArray *registers_init(int vcpu_index)
>                       if (disas_assist) {
>                           g_mutex_lock(&add_reg_name_lock);
>                           if (!g_ptr_array_find(all_reg_names, reg->name, NULL)) {
> -                            g_ptr_array_add(all_reg_names, reg->name);
> +                            g_ptr_array_add(all_reg_names, (gpointer)reg->name);
>                           }
>                           g_mutex_unlock(&add_reg_name_lock);
>                       }

Would be nice if it's still possible to merge this in 9.0 Peter.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Re: [PATCH v3] contrib/plugins/execlog: Fix compiler warning
Posted by Philippe Mathieu-Daudé 1 month ago
On 26/3/24 04:33, Pierrick Bouvier wrote:
> On 3/26/24 05:52, Yao Xingtao wrote:
>> 1. The g_pattern_match_string() is deprecated when glib2 version >= 2.70.
>>     Use g_pattern_spec_match_string() instead to avoid this problem.
>>
>> 2. The type of second parameter in g_ptr_array_add() is
>>     'gpointer' {aka 'void *'}, but the type of reg->name is 'const 
>> char*'.
>>     Cast the type of reg->name to 'gpointer' to avoid this problem.
>>
>> compiler warning message:
>> /root/qemu/contrib/plugins/execlog.c:330:17: warning: 
>> ‘g_pattern_match_string’
>> is deprecated: Use 'g_pattern_spec_match_string'
>> instead [-Wdeprecated-declarations]
>>    330 |                 if (g_pattern_match_string(pat, rd->name) ||
>>        |                 ^~
>> In file included from /usr/include/glib-2.0/glib.h:67,
>>                   from /root/qemu/contrib/plugins/execlog.c:9:
>> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
>>     57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
>>        |               ^~~~~~~~~~~~~~~~~~~~~~
>> /root/qemu/contrib/plugins/execlog.c:331:21: warning: 
>> ‘g_pattern_match_string’
>> is deprecated: Use 'g_pattern_spec_match_string'
>> instead [-Wdeprecated-declarations]
>>    331 |                     g_pattern_match_string(pat, rd_lower)) {
>>        |                     ^~~~~~~~~~~~~~~~~~~~~~
>> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
>>     57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
>>        |               ^~~~~~~~~~~~~~~~~~~~~~
>> /root/qemu/contrib/plugins/execlog.c:339:63: warning: passing argument 
>> 2 of
>> ‘g_ptr_array_add’ discards ‘const’ qualifier from pointer target type
>> [-Wdiscarded-qualifiers]
>>    339 |                             g_ptr_array_add(all_reg_names, 
>> reg->name);
>>        |                                                            
>> ~~~^~~~~~
>> In file included from /usr/include/glib-2.0/glib.h:33:
>> /usr/include/glib-2.0/glib/garray.h:198:62: note: expected
>> ‘gpointer’ {aka ‘void *’} but argument is of type ‘const char *’
>>    198 |                                            gpointer          
>> data);
>>        |                                            
>> ~~~~~~~~~~~~~~~~~~^~~~
>>
>> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2210
>> Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
>> ---
>>   contrib/plugins/execlog.c | 24 +++++++++++++++++++++---
>>   1 file changed, 21 insertions(+), 3 deletions(-)
>>
>> diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c
>> index a1dfd59ab7..fab18113d4 100644
>> --- a/contrib/plugins/execlog.c
>> +++ b/contrib/plugins/execlog.c
>> @@ -311,6 +311,24 @@ static Register 
>> *init_vcpu_register(qemu_plugin_reg_descriptor *desc)
>>       return reg;
>>   }
>> +/*
>> + * g_pattern_match_string has been deprecated in Glib since 2.70 and
>> + * will complain about it if you try to use it. Fortunately the
>> + * signature of both functions is the same making it easy to work
>> + * around.
>> + */
>> +static inline
>> +gboolean g_pattern_spec_match_string_qemu(GPatternSpec *pspec,
>> +                                          const gchar *string)
>> +{
>> +#if GLIB_CHECK_VERSION(2, 70, 0)
>> +    return g_pattern_spec_match_string(pspec, string);
>> +#else
>> +    return g_pattern_match_string(pspec, string);
>> +#endif
>> +};
>> +#define g_pattern_spec_match_string(p, s) 
>> g_pattern_spec_match_string_qemu(p, s)
>> +
>>   static GPtrArray *registers_init(int vcpu_index)
>>   {
>>       g_autoptr(GPtrArray) registers = g_ptr_array_new();
>> @@ -327,8 +345,8 @@ static GPtrArray *registers_init(int vcpu_index)
>>               for (int p = 0; p < rmatches->len; p++) {
>>                   g_autoptr(GPatternSpec) pat = 
>> g_pattern_spec_new(rmatches->pdata[p]);
>>                   g_autofree gchar *rd_lower = 
>> g_utf8_strdown(rd->name, -1);
>> -                if (g_pattern_match_string(pat, rd->name) ||
>> -                    g_pattern_match_string(pat, rd_lower)) {
>> +                if (g_pattern_spec_match_string(pat, rd->name) ||
>> +                    g_pattern_spec_match_string(pat, rd_lower)) {
>>                       Register *reg = init_vcpu_register(rd);
>>                       g_ptr_array_add(registers, reg);
>> @@ -336,7 +354,7 @@ static GPtrArray *registers_init(int vcpu_index)
>>                       if (disas_assist) {
>>                           g_mutex_lock(&add_reg_name_lock);
>>                           if (!g_ptr_array_find(all_reg_names, 
>> reg->name, NULL)) {
>> -                            g_ptr_array_add(all_reg_names, reg->name);
>> +                            g_ptr_array_add(all_reg_names, 
>> (gpointer)reg->name);
>>                           }
>>                           g_mutex_unlock(&add_reg_name_lock);
>>                       }
> 
> Would be nice if it's still possible to merge this in 9.0 Peter.

I will post a small PR later today, so until Peter has something
else planned, I can take it, since the patch LGTM now.

> Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>


Re: [PATCH v3] contrib/plugins/execlog: Fix compiler warning
Posted by Pierrick Bouvier 1 month ago

On 3/26/24 13:54, Philippe Mathieu-Daudé wrote:
> 
> I will post a small PR later today, so until Peter has something
> else planned, I can take it, since the patch LGTM now.
> 

Thanks Philippe :)
Re: [PATCH v3] contrib/plugins/execlog: Fix compiler warning
Posted by Peter Maydell 1 month ago
On Tue, 26 Mar 2024 at 09:54, Philippe Mathieu-Daudé <philmd@linaro.org> wrote:
>
> On 26/3/24 04:33, Pierrick Bouvier wrote:
> > On 3/26/24 05:52, Yao Xingtao wrote:
> >> 1. The g_pattern_match_string() is deprecated when glib2 version >= 2.70.
> >>     Use g_pattern_spec_match_string() instead to avoid this problem.
> >>
> >> 2. The type of second parameter in g_ptr_array_add() is
> >>     'gpointer' {aka 'void *'}, but the type of reg->name is 'const
> >> char*'.
> >>     Cast the type of reg->name to 'gpointer' to avoid this problem.
> >>
> >> compiler warning message:
> >> /root/qemu/contrib/plugins/execlog.c:330:17: warning:
> >> ‘g_pattern_match_string’
> >> is deprecated: Use 'g_pattern_spec_match_string'
> >> instead [-Wdeprecated-declarations]
> >>    330 |                 if (g_pattern_match_string(pat, rd->name) ||
> >>        |                 ^~
> >> In file included from /usr/include/glib-2.0/glib.h:67,
> >>                   from /root/qemu/contrib/plugins/execlog.c:9:
> >> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
> >>     57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
> >>        |               ^~~~~~~~~~~~~~~~~~~~~~
> >> /root/qemu/contrib/plugins/execlog.c:331:21: warning:
> >> ‘g_pattern_match_string’
> >> is deprecated: Use 'g_pattern_spec_match_string'
> >> instead [-Wdeprecated-declarations]
> >>    331 |                     g_pattern_match_string(pat, rd_lower)) {
> >>        |                     ^~~~~~~~~~~~~~~~~~~~~~
> >> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
> >>     57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
> >>        |               ^~~~~~~~~~~~~~~~~~~~~~
> >> /root/qemu/contrib/plugins/execlog.c:339:63: warning: passing argument
> >> 2 of
> >> ‘g_ptr_array_add’ discards ‘const’ qualifier from pointer target type
> >> [-Wdiscarded-qualifiers]
> >>    339 |                             g_ptr_array_add(all_reg_names,
> >> reg->name);
> >>        |
> >> ~~~^~~~~~
> >> In file included from /usr/include/glib-2.0/glib.h:33:
> >> /usr/include/glib-2.0/glib/garray.h:198:62: note: expected
> >> ‘gpointer’ {aka ‘void *’} but argument is of type ‘const char *’
> >>    198 |                                            gpointer
> >> data);
> >>        |
> >> ~~~~~~~~~~~~~~~~~~^~~~
> >>
> >> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2210
> >> Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
> >> ---
> >>   contrib/plugins/execlog.c | 24 +++++++++++++++++++++---
> >>   1 file changed, 21 insertions(+), 3 deletions(-)
> >>
> >> diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c
> >> index a1dfd59ab7..fab18113d4 100644
> >> --- a/contrib/plugins/execlog.c
> >> +++ b/contrib/plugins/execlog.c
> >> @@ -311,6 +311,24 @@ static Register
> >> *init_vcpu_register(qemu_plugin_reg_descriptor *desc)
> >>       return reg;
> >>   }
> >> +/*
> >> + * g_pattern_match_string has been deprecated in Glib since 2.70 and
> >> + * will complain about it if you try to use it. Fortunately the
> >> + * signature of both functions is the same making it easy to work
> >> + * around.
> >> + */
> >> +static inline
> >> +gboolean g_pattern_spec_match_string_qemu(GPatternSpec *pspec,
> >> +                                          const gchar *string)
> >> +{
> >> +#if GLIB_CHECK_VERSION(2, 70, 0)
> >> +    return g_pattern_spec_match_string(pspec, string);
> >> +#else
> >> +    return g_pattern_match_string(pspec, string);
> >> +#endif
> >> +};
> >> +#define g_pattern_spec_match_string(p, s)
> >> g_pattern_spec_match_string_qemu(p, s)
> >> +
> >>   static GPtrArray *registers_init(int vcpu_index)
> >>   {
> >>       g_autoptr(GPtrArray) registers = g_ptr_array_new();
> >> @@ -327,8 +345,8 @@ static GPtrArray *registers_init(int vcpu_index)
> >>               for (int p = 0; p < rmatches->len; p++) {
> >>                   g_autoptr(GPatternSpec) pat =
> >> g_pattern_spec_new(rmatches->pdata[p]);
> >>                   g_autofree gchar *rd_lower =
> >> g_utf8_strdown(rd->name, -1);
> >> -                if (g_pattern_match_string(pat, rd->name) ||
> >> -                    g_pattern_match_string(pat, rd_lower)) {
> >> +                if (g_pattern_spec_match_string(pat, rd->name) ||
> >> +                    g_pattern_spec_match_string(pat, rd_lower)) {
> >>                       Register *reg = init_vcpu_register(rd);
> >>                       g_ptr_array_add(registers, reg);
> >> @@ -336,7 +354,7 @@ static GPtrArray *registers_init(int vcpu_index)
> >>                       if (disas_assist) {
> >>                           g_mutex_lock(&add_reg_name_lock);
> >>                           if (!g_ptr_array_find(all_reg_names,
> >> reg->name, NULL)) {
> >> -                            g_ptr_array_add(all_reg_names, reg->name);
> >> +                            g_ptr_array_add(all_reg_names,
> >> (gpointer)reg->name);
> >>                           }
> >>                           g_mutex_unlock(&add_reg_name_lock);
> >>                       }
> >
> > Would be nice if it's still possible to merge this in 9.0 Peter.
>
> I will post a small PR later today, so until Peter has something
> else planned, I can take it, since the patch LGTM now.

That would be great (I don't have any more patches I wanted
to put in a PR).

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM
Re: [PATCH v3] contrib/plugins/execlog: Fix compiler warning
Posted by Philippe Mathieu-Daudé 1 month ago
On 26/3/24 11:33, Peter Maydell wrote:
> On Tue, 26 Mar 2024 at 09:54, Philippe Mathieu-Daudé <philmd@linaro.org> wrote:
>>
>> On 26/3/24 04:33, Pierrick Bouvier wrote:
>>> On 3/26/24 05:52, Yao Xingtao wrote:
>>>> 1. The g_pattern_match_string() is deprecated when glib2 version >= 2.70.
>>>>      Use g_pattern_spec_match_string() instead to avoid this problem.
>>>>
>>>> 2. The type of second parameter in g_ptr_array_add() is
>>>>      'gpointer' {aka 'void *'}, but the type of reg->name is 'const
>>>> char*'.
>>>>      Cast the type of reg->name to 'gpointer' to avoid this problem.
>>>>
>>>> compiler warning message:
>>>> /root/qemu/contrib/plugins/execlog.c:330:17: warning:
>>>> ‘g_pattern_match_string’
>>>> is deprecated: Use 'g_pattern_spec_match_string'
>>>> instead [-Wdeprecated-declarations]
>>>>     330 |                 if (g_pattern_match_string(pat, rd->name) ||
>>>>         |                 ^~
>>>> In file included from /usr/include/glib-2.0/glib.h:67,
>>>>                    from /root/qemu/contrib/plugins/execlog.c:9:
>>>> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
>>>>      57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
>>>>         |               ^~~~~~~~~~~~~~~~~~~~~~
>>>> /root/qemu/contrib/plugins/execlog.c:331:21: warning:
>>>> ‘g_pattern_match_string’
>>>> is deprecated: Use 'g_pattern_spec_match_string'
>>>> instead [-Wdeprecated-declarations]
>>>>     331 |                     g_pattern_match_string(pat, rd_lower)) {
>>>>         |                     ^~~~~~~~~~~~~~~~~~~~~~
>>>> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
>>>>      57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
>>>>         |               ^~~~~~~~~~~~~~~~~~~~~~
>>>> /root/qemu/contrib/plugins/execlog.c:339:63: warning: passing argument
>>>> 2 of
>>>> ‘g_ptr_array_add’ discards ‘const’ qualifier from pointer target type
>>>> [-Wdiscarded-qualifiers]
>>>>     339 |                             g_ptr_array_add(all_reg_names,
>>>> reg->name);
>>>>         |
>>>> ~~~^~~~~~
>>>> In file included from /usr/include/glib-2.0/glib.h:33:
>>>> /usr/include/glib-2.0/glib/garray.h:198:62: note: expected
>>>> ‘gpointer’ {aka ‘void *’} but argument is of type ‘const char *’
>>>>     198 |                                            gpointer
>>>> data);
>>>>         |
>>>> ~~~~~~~~~~~~~~~~~~^~~~
>>>>
>>>> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2210
>>>> Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
>>>> ---
>>>>    contrib/plugins/execlog.c | 24 +++++++++++++++++++++---
>>>>    1 file changed, 21 insertions(+), 3 deletions(-)
>>>>
>>>> diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c
>>>> index a1dfd59ab7..fab18113d4 100644
>>>> --- a/contrib/plugins/execlog.c
>>>> +++ b/contrib/plugins/execlog.c
>>>> @@ -311,6 +311,24 @@ static Register
>>>> *init_vcpu_register(qemu_plugin_reg_descriptor *desc)
>>>>        return reg;
>>>>    }
>>>> +/*
>>>> + * g_pattern_match_string has been deprecated in Glib since 2.70 and
>>>> + * will complain about it if you try to use it. Fortunately the
>>>> + * signature of both functions is the same making it easy to work
>>>> + * around.
>>>> + */
>>>> +static inline
>>>> +gboolean g_pattern_spec_match_string_qemu(GPatternSpec *pspec,
>>>> +                                          const gchar *string)
>>>> +{
>>>> +#if GLIB_CHECK_VERSION(2, 70, 0)
>>>> +    return g_pattern_spec_match_string(pspec, string);
>>>> +#else
>>>> +    return g_pattern_match_string(pspec, string);
>>>> +#endif
>>>> +};
>>>> +#define g_pattern_spec_match_string(p, s)
>>>> g_pattern_spec_match_string_qemu(p, s)
>>>> +
>>>>    static GPtrArray *registers_init(int vcpu_index)
>>>>    {
>>>>        g_autoptr(GPtrArray) registers = g_ptr_array_new();
>>>> @@ -327,8 +345,8 @@ static GPtrArray *registers_init(int vcpu_index)
>>>>                for (int p = 0; p < rmatches->len; p++) {
>>>>                    g_autoptr(GPatternSpec) pat =
>>>> g_pattern_spec_new(rmatches->pdata[p]);
>>>>                    g_autofree gchar *rd_lower =
>>>> g_utf8_strdown(rd->name, -1);
>>>> -                if (g_pattern_match_string(pat, rd->name) ||
>>>> -                    g_pattern_match_string(pat, rd_lower)) {
>>>> +                if (g_pattern_spec_match_string(pat, rd->name) ||
>>>> +                    g_pattern_spec_match_string(pat, rd_lower)) {
>>>>                        Register *reg = init_vcpu_register(rd);
>>>>                        g_ptr_array_add(registers, reg);
>>>> @@ -336,7 +354,7 @@ static GPtrArray *registers_init(int vcpu_index)
>>>>                        if (disas_assist) {
>>>>                            g_mutex_lock(&add_reg_name_lock);
>>>>                            if (!g_ptr_array_find(all_reg_names,
>>>> reg->name, NULL)) {
>>>> -                            g_ptr_array_add(all_reg_names, reg->name);
>>>> +                            g_ptr_array_add(all_reg_names,
>>>> (gpointer)reg->name);
>>>>                            }
>>>>                            g_mutex_unlock(&add_reg_name_lock);
>>>>                        }
>>>
>>> Would be nice if it's still possible to merge this in 9.0 Peter.
>>
>> I will post a small PR later today, so until Peter has something
>> else planned, I can take it, since the patch LGTM now.
> 
> That would be great (I don't have any more patches I wanted
> to put in a PR).
> 
> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

OK, patch queued then.

Yao, for your future contributions, please post patch iterations
as new thread rather than replying to previous versions. You can
see tips here:
https://www.qemu.org/docs/master/devel/submitting-a-patch.html#submitting-your-patches
in particular:

   Patches are easier to find if they start a new top-level thread,
   rather than being buried in-reply-to another existing thread.

Regards,

Phil.


RE: [PATCH v3] contrib/plugins/execlog: Fix compiler warning
Posted by Xingtao Yao (Fujitsu) via 1 month ago

> -----Original Message-----
> From: Philippe Mathieu-Daudé <philmd@linaro.org>
> Sent: Tuesday, March 26, 2024 8:04 PM
> To: Peter Maydell <peter.maydell@linaro.org>
> Cc: Pierrick Bouvier <pierrick.bouvier@linaro.org>; Yao, Xingtao/姚 幸涛
> <yaoxt.fnst@fujitsu.com>; qemu-devel@nongnu.org; alex.bennee@linaro.org;
> erdnaxe@crans.org; ma.mandourr@gmail.com
> Subject: Re: [PATCH v3] contrib/plugins/execlog: Fix compiler warning
> 
> On 26/3/24 11:33, Peter Maydell wrote:
> > On Tue, 26 Mar 2024 at 09:54, Philippe Mathieu-Daudé <philmd@linaro.org>
> wrote:
> >>
> >> On 26/3/24 04:33, Pierrick Bouvier wrote:
> >>> On 3/26/24 05:52, Yao Xingtao wrote:
> >>>> 1. The g_pattern_match_string() is deprecated when glib2 version >=
> 2.70.
> >>>>      Use g_pattern_spec_match_string() instead to avoid this
> problem.
> >>>>
> >>>> 2. The type of second parameter in g_ptr_array_add() is
> >>>>      'gpointer' {aka 'void *'}, but the type of reg->name is 'const
> >>>> char*'.
> >>>>      Cast the type of reg->name to 'gpointer' to avoid this problem.
> >>>>
> >>>> compiler warning message:
> >>>> /root/qemu/contrib/plugins/execlog.c:330:17: warning:
> >>>> ‘g_pattern_match_string’
> >>>> is deprecated: Use 'g_pattern_spec_match_string'
> >>>> instead [-Wdeprecated-declarations]
> >>>>     330 |                 if (g_pattern_match_string(pat, rd->name)
> ||
> >>>>         |                 ^~
> >>>> In file included from /usr/include/glib-2.0/glib.h:67,
> >>>>                    from /root/qemu/contrib/plugins/execlog.c:9:
> >>>> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
> >>>>      57 | gboolean      g_pattern_match_string   (GPatternSpec
> *pspec,
> >>>>         |               ^~~~~~~~~~~~~~~~~~~~~~
> >>>> /root/qemu/contrib/plugins/execlog.c:331:21: warning:
> >>>> ‘g_pattern_match_string’
> >>>> is deprecated: Use 'g_pattern_spec_match_string'
> >>>> instead [-Wdeprecated-declarations]
> >>>>     331 |                     g_pattern_match_string(pat, rd_lower))
> {
> >>>>         |                     ^~~~~~~~~~~~~~~~~~~~~~
> >>>> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
> >>>>      57 | gboolean      g_pattern_match_string   (GPatternSpec
> *pspec,
> >>>>         |               ^~~~~~~~~~~~~~~~~~~~~~
> >>>> /root/qemu/contrib/plugins/execlog.c:339:63: warning: passing
> >>>> argument
> >>>> 2 of
> >>>> ‘g_ptr_array_add’ discards ‘const’ qualifier from pointer target
> >>>> type [-Wdiscarded-qualifiers]
> >>>>     339 |
> g_ptr_array_add(all_reg_names,
> >>>> reg->name);
> >>>>         |
> >>>> ~~~^~~~~~
> >>>> In file included from /usr/include/glib-2.0/glib.h:33:
> >>>> /usr/include/glib-2.0/glib/garray.h:198:62: note: expected
> >>>> ‘gpointer’ {aka ‘void *’} but argument is of type ‘const char *’
> >>>>     198 |                                            gpointer
> >>>> data);
> >>>>         |
> >>>> ~~~~~~~~~~~~~~~~~~^~~~
> >>>>
> >>>> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2210
> >>>> Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
> >>>> ---
> >>>>    contrib/plugins/execlog.c | 24 +++++++++++++++++++++---
> >>>>    1 file changed, 21 insertions(+), 3 deletions(-)
> >>>>
> >>>> diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c
> >>>> index a1dfd59ab7..fab18113d4 100644
> >>>> --- a/contrib/plugins/execlog.c
> >>>> +++ b/contrib/plugins/execlog.c
> >>>> @@ -311,6 +311,24 @@ static Register
> >>>> *init_vcpu_register(qemu_plugin_reg_descriptor *desc)
> >>>>        return reg;
> >>>>    }
> >>>> +/*
> >>>> + * g_pattern_match_string has been deprecated in Glib since 2.70
> >>>> +and
> >>>> + * will complain about it if you try to use it. Fortunately the
> >>>> + * signature of both functions is the same making it easy to work
> >>>> + * around.
> >>>> + */
> >>>> +static inline
> >>>> +gboolean g_pattern_spec_match_string_qemu(GPatternSpec *pspec,
> >>>> +                                          const gchar *string) {
> >>>> +#if GLIB_CHECK_VERSION(2, 70, 0)
> >>>> +    return g_pattern_spec_match_string(pspec, string); #else
> >>>> +    return g_pattern_match_string(pspec, string); #endif };
> >>>> +#define g_pattern_spec_match_string(p, s)
> >>>> g_pattern_spec_match_string_qemu(p, s)
> >>>> +
> >>>>    static GPtrArray *registers_init(int vcpu_index)
> >>>>    {
> >>>>        g_autoptr(GPtrArray) registers = g_ptr_array_new(); @@
> >>>> -327,8 +345,8 @@ static GPtrArray *registers_init(int vcpu_index)
> >>>>                for (int p = 0; p < rmatches->len; p++) {
> >>>>                    g_autoptr(GPatternSpec) pat =
> >>>> g_pattern_spec_new(rmatches->pdata[p]);
> >>>>                    g_autofree gchar *rd_lower =
> >>>> g_utf8_strdown(rd->name, -1);
> >>>> -                if (g_pattern_match_string(pat, rd->name) ||
> >>>> -                    g_pattern_match_string(pat, rd_lower)) {
> >>>> +                if (g_pattern_spec_match_string(pat, rd->name) ||
> >>>> +                    g_pattern_spec_match_string(pat, rd_lower)) {
> >>>>                        Register *reg = init_vcpu_register(rd);
> >>>>                        g_ptr_array_add(registers, reg); @@ -336,7
> >>>> +354,7 @@ static GPtrArray *registers_init(int vcpu_index)
> >>>>                        if (disas_assist) {
> >>>>                            g_mutex_lock(&add_reg_name_lock);
> >>>>                            if (!g_ptr_array_find(all_reg_names,
> >>>> reg->name, NULL)) {
> >>>> -                            g_ptr_array_add(all_reg_names,
> reg->name);
> >>>> +                            g_ptr_array_add(all_reg_names,
> >>>> (gpointer)reg->name);
> >>>>                            }
> >>>>                            g_mutex_unlock(&add_reg_name_lock);
> >>>>                        }
> >>>
> >>> Would be nice if it's still possible to merge this in 9.0 Peter.
> >>
> >> I will post a small PR later today, so until Peter has something else
> >> planned, I can take it, since the patch LGTM now.
> >
> > That would be great (I don't have any more patches I wanted to put in
> > a PR).
> >
> > Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
> 
> OK, patch queued then.
> 
> Yao, for your future contributions, please post patch iterations as new thread
> rather than replying to previous versions. You can see tips here:
> https://www.qemu.org/docs/master/devel/submitting-a-patch.html#submit
> ting-your-patches
> in particular:
> 
>    Patches are easier to find if they start a new top-level thread,
>    rather than being buried in-reply-to another existing thread.
> 
thanks, I will.
> Regards,
> 
> Phil.

[PATCH v2] contrib/plugins/execlog: Fix compiler warning
Posted by Yao Xingtao via 1 month ago
1. The g_pattern_match_string() is deprecated when glib2 version >= 2.70.
   Use g_pattern_spec_match_string() instead to avoid this problem.

2. The type of second parameter in g_ptr_array_add() is
   'gpointer' {aka 'void *'}, but the type of reg->name is 'const char*'.
   Cast the type of reg->name to 'gpointer' to avoid this problem.

compiler warning message:
/root/qemu/contrib/plugins/execlog.c:330:17: warning: ‘g_pattern_match_string’
is deprecated: Use 'g_pattern_spec_match_string'
instead [-Wdeprecated-declarations]
  330 |                 if (g_pattern_match_string(pat, rd->name) ||
      |                 ^~
In file included from /usr/include/glib-2.0/glib.h:67,
                 from /root/qemu/contrib/plugins/execlog.c:9:
/usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
   57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
      |               ^~~~~~~~~~~~~~~~~~~~~~
/root/qemu/contrib/plugins/execlog.c:331:21: warning: ‘g_pattern_match_string’
is deprecated: Use 'g_pattern_spec_match_string'
instead [-Wdeprecated-declarations]
  331 |                     g_pattern_match_string(pat, rd_lower)) {
      |                     ^~~~~~~~~~~~~~~~~~~~~~
/usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
   57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
      |               ^~~~~~~~~~~~~~~~~~~~~~
/root/qemu/contrib/plugins/execlog.c:339:63: warning: passing argument 2 of
‘g_ptr_array_add’ discards ‘const’ qualifier from pointer target type
[-Wdiscarded-qualifiers]
  339 |                             g_ptr_array_add(all_reg_names, reg->name);
      |                                                            ~~~^~~~~~
In file included from /usr/include/glib-2.0/glib.h:33:
/usr/include/glib-2.0/glib/garray.h:198:62: note: expected
‘gpointer’ {aka ‘void *’} but argument is of type ‘const char *’
  198 |                                            gpointer          data);
      |                                            ~~~~~~~~~~~~~~~~~~^~~~

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2210
Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
---
 contrib/plugins/execlog.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c
index a1dfd59ab7..09654910ee 100644
--- a/contrib/plugins/execlog.c
+++ b/contrib/plugins/execlog.c
@@ -327,8 +327,13 @@ static GPtrArray *registers_init(int vcpu_index)
             for (int p = 0; p < rmatches->len; p++) {
                 g_autoptr(GPatternSpec) pat = g_pattern_spec_new(rmatches->pdata[p]);
                 g_autofree gchar *rd_lower = g_utf8_strdown(rd->name, -1);
+#if GLIB_CHECK_VERSION(2, 70, 0)
+                if (g_pattern_spec_match_string(pat, rd->name) ||
+                    g_pattern_spec_match_string(pat, rd_lower)) {
+#else
                 if (g_pattern_match_string(pat, rd->name) ||
                     g_pattern_match_string(pat, rd_lower)) {
+#endif
                     Register *reg = init_vcpu_register(rd);
                     g_ptr_array_add(registers, reg);
 
@@ -336,7 +341,7 @@ static GPtrArray *registers_init(int vcpu_index)
                     if (disas_assist) {
                         g_mutex_lock(&add_reg_name_lock);
                         if (!g_ptr_array_find(all_reg_names, reg->name, NULL)) {
-                            g_ptr_array_add(all_reg_names, reg->name);
+                            g_ptr_array_add(all_reg_names, (gpointer)reg->name);
                         }
                         g_mutex_unlock(&add_reg_name_lock);
                     }
-- 
2.37.3


Re: [PATCH v2] contrib/plugins/execlog: Fix compiler warning
Posted by Pierrick Bouvier 1 month ago
On 3/25/24 10:06, Yao Xingtao wrote:
> 1. The g_pattern_match_string() is deprecated when glib2 version >= 2.70.
>     Use g_pattern_spec_match_string() instead to avoid this problem.
> 
> 2. The type of second parameter in g_ptr_array_add() is
>     'gpointer' {aka 'void *'}, but the type of reg->name is 'const char*'.
>     Cast the type of reg->name to 'gpointer' to avoid this problem.
> 
> compiler warning message:
> /root/qemu/contrib/plugins/execlog.c:330:17: warning: ‘g_pattern_match_string’
> is deprecated: Use 'g_pattern_spec_match_string'
> instead [-Wdeprecated-declarations]
>    330 |                 if (g_pattern_match_string(pat, rd->name) ||
>        |                 ^~
> In file included from /usr/include/glib-2.0/glib.h:67,
>                   from /root/qemu/contrib/plugins/execlog.c:9:
> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
>     57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
>        |               ^~~~~~~~~~~~~~~~~~~~~~
> /root/qemu/contrib/plugins/execlog.c:331:21: warning: ‘g_pattern_match_string’
> is deprecated: Use 'g_pattern_spec_match_string'
> instead [-Wdeprecated-declarations]
>    331 |                     g_pattern_match_string(pat, rd_lower)) {
>        |                     ^~~~~~~~~~~~~~~~~~~~~~
> /usr/include/glib-2.0/glib/gpattern.h:57:15: note: declared here
>     57 | gboolean      g_pattern_match_string   (GPatternSpec *pspec,
>        |               ^~~~~~~~~~~~~~~~~~~~~~
> /root/qemu/contrib/plugins/execlog.c:339:63: warning: passing argument 2 of
> ‘g_ptr_array_add’ discards ‘const’ qualifier from pointer target type
> [-Wdiscarded-qualifiers]
>    339 |                             g_ptr_array_add(all_reg_names, reg->name);
>        |                                                            ~~~^~~~~~
> In file included from /usr/include/glib-2.0/glib.h:33:
> /usr/include/glib-2.0/glib/garray.h:198:62: note: expected
> ‘gpointer’ {aka ‘void *’} but argument is of type ‘const char *’
>    198 |                                            gpointer          data);
>        |                                            ~~~~~~~~~~~~~~~~~~^~~~
> 
> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2210
> Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
> ---
>   contrib/plugins/execlog.c | 7 ++++++-
>   1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c
> index a1dfd59ab7..09654910ee 100644
> --- a/contrib/plugins/execlog.c
> +++ b/contrib/plugins/execlog.c
> @@ -327,8 +327,13 @@ static GPtrArray *registers_init(int vcpu_index)
>               for (int p = 0; p < rmatches->len; p++) {
>                   g_autoptr(GPatternSpec) pat = g_pattern_spec_new(rmatches->pdata[p]);
>                   g_autofree gchar *rd_lower = g_utf8_strdown(rd->name, -1);
> +#if GLIB_CHECK_VERSION(2, 70, 0)
> +                if (g_pattern_spec_match_string(pat, rd->name) ||
> +                    g_pattern_spec_match_string(pat, rd_lower)) {
> +#else
>                   if (g_pattern_match_string(pat, rd->name) ||
>                       g_pattern_match_string(pat, rd_lower)) {
> +#endif
>                       Register *reg = init_vcpu_register(rd);
>                       g_ptr_array_add(registers, reg);
>   

As suggested by Peter on previous version, you can declare a new 
function `g_pattern_match_string_qemu` in include/glib-compat.h which 
abstract this.
You'll need to add include/ to Makefile as well, so glib-compat.h will 
be accessible to contrib plugins too.

> @@ -336,7 +341,7 @@ static GPtrArray *registers_init(int vcpu_index)
>                       if (disas_assist) {
>                           g_mutex_lock(&add_reg_name_lock);
>                           if (!g_ptr_array_find(all_reg_names, reg->name, NULL)) {
> -                            g_ptr_array_add(all_reg_names, reg->name);
> +                            g_ptr_array_add(all_reg_names, (gpointer)reg->name);
>                           }
>                           g_mutex_unlock(&add_reg_name_lock);
>                       }
Re: [PATCH v2] contrib/plugins/execlog: Fix compiler warning
Posted by Peter Maydell 1 month ago
On Mon, 25 Mar 2024 at 06:41, Pierrick Bouvier
<pierrick.bouvier@linaro.org> wrote:
>
> On 3/25/24 10:06, Yao Xingtao wrote:
> > diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c
> > index a1dfd59ab7..09654910ee 100644
> > --- a/contrib/plugins/execlog.c
> > +++ b/contrib/plugins/execlog.c
> > @@ -327,8 +327,13 @@ static GPtrArray *registers_init(int vcpu_index)
> >               for (int p = 0; p < rmatches->len; p++) {
> >                   g_autoptr(GPatternSpec) pat = g_pattern_spec_new(rmatches->pdata[p]);
> >                   g_autofree gchar *rd_lower = g_utf8_strdown(rd->name, -1);
> > +#if GLIB_CHECK_VERSION(2, 70, 0)
> > +                if (g_pattern_spec_match_string(pat, rd->name) ||
> > +                    g_pattern_spec_match_string(pat, rd_lower)) {
> > +#else
> >                   if (g_pattern_match_string(pat, rd->name) ||
> >                       g_pattern_match_string(pat, rd_lower)) {
> > +#endif
> >                       Register *reg = init_vcpu_register(rd);
> >                       g_ptr_array_add(registers, reg);
> >
>
> As suggested by Peter on previous version, you can declare a new
> function `g_pattern_match_string_qemu` in include/glib-compat.h which
> abstract this.

We should have an abstraction function, but it should *not*
be in glib-compat.h, but local to this plugin's .c file. This is
because the plugins are deliberately standalone binaries which do not
rely on any of QEMU's include files or build process (you'll
see they don't use osdep.h, for example).

thanks
-- PMM
Re: [PATCH v2] contrib/plugins/execlog: Fix compiler warning
Posted by Pierrick Bouvier 1 month ago
On 3/25/24 13:58, Peter Maydell wrote:
> On Mon, 25 Mar 2024 at 06:41, Pierrick Bouvier
> <pierrick.bouvier@linaro.org> wrote:
>>
>> On 3/25/24 10:06, Yao Xingtao wrote:
>>> diff --git a/contrib/plugins/execlog.c b/contrib/plugins/execlog.c
>>> index a1dfd59ab7..09654910ee 100644
>>> --- a/contrib/plugins/execlog.c
>>> +++ b/contrib/plugins/execlog.c
>>> @@ -327,8 +327,13 @@ static GPtrArray *registers_init(int vcpu_index)
>>>                for (int p = 0; p < rmatches->len; p++) {
>>>                    g_autoptr(GPatternSpec) pat = g_pattern_spec_new(rmatches->pdata[p]);
>>>                    g_autofree gchar *rd_lower = g_utf8_strdown(rd->name, -1);
>>> +#if GLIB_CHECK_VERSION(2, 70, 0)
>>> +                if (g_pattern_spec_match_string(pat, rd->name) ||
>>> +                    g_pattern_spec_match_string(pat, rd_lower)) {
>>> +#else
>>>                    if (g_pattern_match_string(pat, rd->name) ||
>>>                        g_pattern_match_string(pat, rd_lower)) {
>>> +#endif
>>>                        Register *reg = init_vcpu_register(rd);
>>>                        g_ptr_array_add(registers, reg);
>>>
>>
>> As suggested by Peter on previous version, you can declare a new
>> function `g_pattern_match_string_qemu` in include/glib-compat.h which
>> abstract this.
> 
> We should have an abstraction function, but it should *not*
> be in glib-compat.h, but local to this plugin's .c file. This is
> because the plugins are deliberately standalone binaries which do not
> rely on any of QEMU's include files or build process (you'll
> see they don't use osdep.h, for example).
> 

Sorry, I misunderstood that, as it was discussed with Alex that maybe 
plugins should be able to access glib-compat.h.

> thanks
> -- PMM