[Qemu-devel] [PATCH] qjson.h: Remove spurious GCC_FMT_ATTR markup from qobject_from_json() declaration

[Qemu-devel] [PATCH] qjson.h: Remove spurious GCC_FMT_ATTR markup from qobject_from_json() declaration

[Peter Maydell]

The function qobject_from_json() doesn't actually allow its
argument to be a format string -- it passes a NULL va_list*
to qobject_from_jsonv(), and the parser code will then never
actually intepret %-escape sequences (it tests whether the
va_list pointer is NULL and will stop with a parse error).

The spurious attribute markup causes clang warnings in some
of the test cases where we programmatically construct JSON
to feed to qobject_from_json():

 tests/test-qmp-input-visitor.c:76:35: warning: format string is not a
 string literal (potentially insecure) [-Wformat-security]
    data->obj = qobject_from_json(json_string);
                                  ^~~~~~~~~~~

Remove the incorrect attribute.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
---
 include/qapi/qmp/qjson.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/qapi/qmp/qjson.h b/include/qapi/qmp/qjson.h
index 73351ed..ee4d31a 100644
--- a/include/qapi/qmp/qjson.h
+++ b/include/qapi/qmp/qjson.h
@@ -19,7 +19,7 @@
 #include "qapi/qmp/qobject.h"
 #include "qapi/qmp/qstring.h"
 
-QObject *qobject_from_json(const char *string) GCC_FMT_ATTR(1, 0);
+QObject *qobject_from_json(const char *string);
 QObject *qobject_from_jsonf(const char *string, ...) GCC_FMT_ATTR(1, 2);
 QObject *qobject_from_jsonv(const char *string, va_list *ap) GCC_FMT_ATTR(1, 0);
 
-- 
1.8.5.4

Re: [Qemu-devel] [PATCH] qjson.h: Remove spurious GCC_FMT_ATTR markup from qobject_from_json() declaration

[Eric Blake]

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On 02/26/2014 04:51 PM, Peter Maydell wrote:
> The function qobject_from_json() doesn't actually allow its
> argument to be a format string -- it passes a NULL va_list*
> to qobject_from_jsonv(), and the parser code will then never
> actually intepret %-escape sequences (it tests whether the
> va_list pointer is NULL and will stop with a parse error).
> 
> The spurious attribute markup causes clang warnings in some
> of the test cases where we programmatically construct JSON
> to feed to qobject_from_json():
> 
>  tests/test-qmp-input-visitor.c:76:35: warning: format string is not a
>  string literal (potentially insecure) [-Wformat-security]
>     data->obj = qobject_from_json(json_string);
>                                   ^~~~~~~~~~~
> 
> Remove the incorrect attribute.
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
>  include/qapi/qmp/qjson.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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Re: [Qemu-devel] [Qemu-trivial] [PATCH] qjson.h: Remove spurious GCC_FMT_ATTR markup from qobject_from_json() declaration

[Michael Tokarev]

27.02.2014 03:51, Peter Maydell пишет:
> The function qobject_from_json() doesn't actually allow its
> argument to be a format string -- it passes a NULL va_list*
> to qobject_from_jsonv(), and the parser code will then never
> actually intepret %-escape sequences (it tests whether the
> va_list pointer is NULL and will stop with a parse error).
> 
> The spurious attribute markup causes clang warnings in some
> of the test cases where we programmatically construct JSON
> to feed to qobject_from_json():
> 
>  tests/test-qmp-input-visitor.c:76:35: warning: format string is not a
>  string literal (potentially insecure) [-Wformat-security]
>     data->obj = qobject_from_json(json_string);
>                                   ^~~~~~~~~~~
> 
> Remove the incorrect attribute.

Applied to -trivial, thank you!

/mjt

Re: [Qemu-devel] [PATCH] qjson.h: Remove spurious GCC_FMT_ATTR markup from qobject_from_json() declaration

[Andreas Färber]

Am 27.02.2014 00:51, schrieb Peter Maydell:
> The function qobject_from_json() doesn't actually allow its
> argument to be a format string -- it passes a NULL va_list*
> to qobject_from_jsonv(), and the parser code will then never
> actually intepret %-escape sequences (it tests whether the

"interpret"

> va_list pointer is NULL and will stop with a parse error).
> 
> The spurious attribute markup causes clang warnings in some
> of the test cases where we programmatically construct JSON
> to feed to qobject_from_json():
> 
>  tests/test-qmp-input-visitor.c:76:35: warning: format string is not a
>  string literal (potentially insecure) [-Wformat-security]
>     data->obj = qobject_from_json(json_string);
>                                   ^~~~~~~~~~~
> 
> Remove the incorrect attribute.
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> Suggested-by: Paolo Bonzini <pbonzini@redhat.com>

Otherwise

Reviewed-by: Andreas Färber <afaerber@suse.de>

Regards,
Andreas

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