[PATCH 1/2] kconfig: qconf: use delete[] instead of delete to free array (again)

[PATCH 1/2] kconfig: qconf: use delete[] instead of delete to free array (again)

[Masahiro Yamada]

Commit c9b09a9249e6 ("kconfig: qconf: use delete[] instead of delete
to free array") fixed two lines, but there is one more.
(cppcheck does not report it for some reason...)

This was detected by Clang.

"make HOSTCXX=clang++ xconfig" reports the following:

scripts/kconfig/qconf.cc:1279:2: warning: 'delete' applied to a pointer that was allocated with 'new[]'; did you mean 'delete[]'? [-Wmismatched-new-delete]
        delete data;
        ^
              []
scripts/kconfig/qconf.cc:1239:15: note: allocated with 'new[]' here
        char *data = new char[count + 1];
                     ^

Fixes: c4f7398bee9c ("kconfig: qconf: make debug links work again")
Fixes: c9b09a9249e6 ("kconfig: qconf: use delete[] instead of delete to free array")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 scripts/kconfig/qconf.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/kconfig/qconf.cc b/scripts/kconfig/qconf.cc
index 8638785328a7..c7216b9110fc 100644
--- a/scripts/kconfig/qconf.cc
+++ b/scripts/kconfig/qconf.cc
@@ -1276,7 +1276,7 @@ void ConfigInfoView::clicked(const QUrl &url)
 	}
 
 	free(result);
-	delete data;
+	delete[] data;
 }
 
 void ConfigInfoView::contextMenuEvent(QContextMenuEvent *event)
-- 
2.25.1

[PATCH 2/2] kconfig: fix incomplete type 'struct gstr' warning

[Masahiro Yamada]

"make HOSTCXX=clang++ xconfig" reports the following:

  HOSTCXX scripts/kconfig/qconf.o
In file included from scripts/kconfig/qconf.cc:23:
In file included from scripts/kconfig/lkc.h:15:
scripts/kconfig/lkc_proto.h:26:13: warning: 'get_relations_str' has C-linkage specified, but returns incomplete type 'struct gstr' which could be incompatible with C [-Wreturn-type-c-linkage]
struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head);
            ^

Currently, get_relations_str() is declared before the struct gstr
definition.

Move all declarations of menu.c functions below.

BTW, some are declared in lkc.h and some in lkc_proto.h, but the
difference is unclear. I guess some refactoring is needed.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

 scripts/kconfig/lkc.h       | 47 +++++++++++++++++++++++--------------
 scripts/kconfig/lkc_proto.h | 14 -----------
 2 files changed, 30 insertions(+), 31 deletions(-)

diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
index d4ca8297364f..8454649b17bd 100644
--- a/scripts/kconfig/lkc.h
+++ b/scripts/kconfig/lkc.h
@@ -66,23 +66,6 @@ static inline void xfwrite(const void *str, size_t len, size_t count, FILE *out)
 		fprintf(stderr, "Error in writing or end of file.\n");
 }
 
-/* menu.c */
-void _menu_init(void);
-void menu_warn(struct menu *menu, const char *fmt, ...);
-struct menu *menu_add_menu(void);
-void menu_end_menu(void);
-void menu_add_entry(struct symbol *sym);
-void menu_add_dep(struct expr *dep);
-void menu_add_visibility(struct expr *dep);
-struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep);
-void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep);
-void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep);
-void menu_add_option_modules(void);
-void menu_add_option_defconfig_list(void);
-void menu_add_option_allnoconfig_y(void);
-void menu_finalize(struct menu *parent);
-void menu_set_type(int type);
-
 /* util.c */
 struct file *file_lookup(const char *name);
 void *xmalloc(size_t size);
@@ -109,6 +92,36 @@ void str_append(struct gstr *gs, const char *s);
 void str_printf(struct gstr *gs, const char *fmt, ...);
 const char *str_get(struct gstr *gs);
 
+/* menu.c */
+void _menu_init(void);
+void menu_warn(struct menu *menu, const char *fmt, ...);
+struct menu *menu_add_menu(void);
+void menu_end_menu(void);
+void menu_add_entry(struct symbol *sym);
+void menu_add_dep(struct expr *dep);
+void menu_add_visibility(struct expr *dep);
+struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep);
+void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep);
+void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep);
+void menu_add_option_modules(void);
+void menu_add_option_defconfig_list(void);
+void menu_add_option_allnoconfig_y(void);
+void menu_finalize(struct menu *parent);
+void menu_set_type(int type);
+
+extern struct menu rootmenu;
+
+bool menu_is_empty(struct menu *menu);
+bool menu_is_visible(struct menu *menu);
+bool menu_has_prompt(struct menu *menu);
+const char *menu_get_prompt(struct menu *menu);
+struct menu *menu_get_root_menu(struct menu *menu);
+struct menu *menu_get_parent_menu(struct menu *menu);
+bool menu_has_help(struct menu *menu);
+const char *menu_get_help(struct menu *menu);
+struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head);
+void menu_get_ext_help(struct menu *menu, struct gstr *help);
+
 /* symbol.c */
 void sym_clear_all_valid(void);
 struct symbol *sym_choice_default(struct symbol *sym);
diff --git a/scripts/kconfig/lkc_proto.h b/scripts/kconfig/lkc_proto.h
index f9ab98238aef..9e81be33c40f 100644
--- a/scripts/kconfig/lkc_proto.h
+++ b/scripts/kconfig/lkc_proto.h
@@ -12,20 +12,6 @@ bool conf_get_changed(void);
 void conf_set_changed_callback(void (*fn)(void));
 void conf_set_message_callback(void (*fn)(const char *s));
 
-/* menu.c */
-extern struct menu rootmenu;
-
-bool menu_is_empty(struct menu *menu);
-bool menu_is_visible(struct menu *menu);
-bool menu_has_prompt(struct menu *menu);
-const char * menu_get_prompt(struct menu *menu);
-struct menu * menu_get_root_menu(struct menu *menu);
-struct menu * menu_get_parent_menu(struct menu *menu);
-bool menu_has_help(struct menu *menu);
-const char * menu_get_help(struct menu *menu);
-struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head);
-void menu_get_ext_help(struct menu *menu, struct gstr *help);
-
 /* symbol.c */
 extern struct symbol * symbol_hash[SYMBOL_HASHSIZE];
 
-- 
2.25.1

Re: [PATCH 2/2] kconfig: fix incomplete type 'struct gstr' warning

[Boris Kolpackov]

Masahiro Yamada <masahiroy@kernel.org> writes:

> Currently, get_relations_str() is declared before the struct gstr
> definition.

Yes, I also ran into this while building the kconfig code with MSVC.
I just moved the struct gstr definition before lkc_proto.h #include
but your fix works just as well.

Acked-by: Boris Kolpackov <boris@codesynthesis.com>


> BTW, some are declared in lkc.h and some in lkc_proto.h, but the
> difference is unclear. I guess some refactoring is needed.

Yes, please. My (potentially incorrect) understanding is that lkc_proto.h
was for functions that are not (or should not be) used by clients but
should nevertheless have prototypes due to -Wmissing-prototypes. I,
however, believe this no longer holds and so would vote to merge
lkc_proto.h into lkc.h.

Re: [PATCH 2/2] kconfig: fix incomplete type 'struct gstr' warning

[Masahiro Yamada]

On Wed, Sep 9, 2020 at 11:09 PM Boris Kolpackov <boris@codesynthesis.com> wrote:
>
> Masahiro Yamada <masahiroy@kernel.org> writes:
>
> > Currently, get_relations_str() is declared before the struct gstr
> > definition.
>
> Yes, I also ran into this while building the kconfig code with MSVC.
> I just moved the struct gstr definition before lkc_proto.h #include
> but your fix works just as well.
>
> Acked-by: Boris Kolpackov <boris@codesynthesis.com>
>
>
> > BTW, some are declared in lkc.h and some in lkc_proto.h, but the
> > difference is unclear. I guess some refactoring is needed.
>
> Yes, please. My (potentially incorrect) understanding is that lkc_proto.h
> was for functions that are not (or should not be) used by clients but
> should nevertheless have prototypes due to -Wmissing-prototypes. I,
> however, believe this no longer holds and so would vote to merge
> lkc_proto.h into lkc.h.
>
> --
> You received this message because you are subscribed to the Google Groups "Clang Built Linux" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to clang-built-linux+unsubscribe@googlegroups.com.
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Applied to linux-kbuild/fixes.



-- 
Best Regards
Masahiro Yamada

Re: [PATCH 1/2] kconfig: qconf: use delete[] instead of delete to free array (again)

[Nick Desaulniers]

On Tue, Sep 8, 2020 at 3:17 PM Masahiro Yamada <masahiroy@kernel.org> wrote:
>
> Commit c9b09a9249e6 ("kconfig: qconf: use delete[] instead of delete
> to free array") fixed two lines, but there is one more.
> (cppcheck does not report it for some reason...)
>
> This was detected by Clang.
>
> "make HOSTCXX=clang++ xconfig" reports the following:
>
> scripts/kconfig/qconf.cc:1279:2: warning: 'delete' applied to a pointer that was allocated with 'new[]'; did you mean 'delete[]'? [-Wmismatched-new-delete]
>         delete data;
>         ^
>               []
> scripts/kconfig/qconf.cc:1239:15: note: allocated with 'new[]' here
>         char *data = new char[count + 1];
>                      ^
>
> Fixes: c4f7398bee9c ("kconfig: qconf: make debug links work again")
> Fixes: c9b09a9249e6 ("kconfig: qconf: use delete[] instead of delete to free array")
> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>

> ---
>
>  scripts/kconfig/qconf.cc | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/scripts/kconfig/qconf.cc b/scripts/kconfig/qconf.cc
> index 8638785328a7..c7216b9110fc 100644
> --- a/scripts/kconfig/qconf.cc
> +++ b/scripts/kconfig/qconf.cc
> @@ -1276,7 +1276,7 @@ void ConfigInfoView::clicked(const QUrl &url)
>         }
>
>         free(result);
> -       delete data;
> +       delete[] data;
>  }
>
>  void ConfigInfoView::contextMenuEvent(QContextMenuEvent *event)
> --
> 2.25.1
>


-- 
Thanks,
~Nick Desaulniers

Re: [PATCH 1/2] kconfig: qconf: use delete[] instead of delete to free array (again)

[Masahiro Yamada]

On Fri, Sep 11, 2020 at 2:24 AM 'Nick Desaulniers' via Clang Built
Linux <clang-built-linux@googlegroups.com> wrote:
>
> On Tue, Sep 8, 2020 at 3:17 PM Masahiro Yamada <masahiroy@kernel.org> wrote:
> >
> > Commit c9b09a9249e6 ("kconfig: qconf: use delete[] instead of delete
> > to free array") fixed two lines, but there is one more.
> > (cppcheck does not report it for some reason...)
> >
> > This was detected by Clang.
> >
> > "make HOSTCXX=clang++ xconfig" reports the following:
> >
> > scripts/kconfig/qconf.cc:1279:2: warning: 'delete' applied to a pointer that was allocated with 'new[]'; did you mean 'delete[]'? [-Wmismatched-new-delete]
> >         delete data;
> >         ^
> >               []
> > scripts/kconfig/qconf.cc:1239:15: note: allocated with 'new[]' here
> >         char *data = new char[count + 1];
> >                      ^
> >
> > Fixes: c4f7398bee9c ("kconfig: qconf: make debug links work again")
> > Fixes: c9b09a9249e6 ("kconfig: qconf: use delete[] instead of delete to free array")
> > Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
>
> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
>
> > ---
> >
> >  scripts/kconfig/qconf.cc | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/scripts/kconfig/qconf.cc b/scripts/kconfig/qconf.cc
> > index 8638785328a7..c7216b9110fc 100644
> > --- a/scripts/kconfig/qconf.cc
> > +++ b/scripts/kconfig/qconf.cc
> > @@ -1276,7 +1276,7 @@ void ConfigInfoView::clicked(const QUrl &url)
> >         }
> >
> >         free(result);
> > -       delete data;
> > +       delete[] data;
> >  }
> >
> >  void ConfigInfoView::contextMenuEvent(QContextMenuEvent *event)
> > --
> > 2.25.1
> >
>
>
> --
> Thanks,
> ~Nick Desaulniers
>
> --
> You received this message because you are subscribed to the Google Groups "Clang Built Linux" group.
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Applied to linux-kbuild/fixes.


-- 
Best Regards
Masahiro Yamada