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[88.187.86.199]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a212374458sm4760585e9.3.2026.10.22.14.51.23 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Thu, 22 Oct 2026 14:51:23 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Pierrick Bouvier , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH v3 01/33] qemu/osdep: Document ARRAY_SIZE() macro rejects pointers Date: Thu, 22 Oct 2026 23:50:41 +0200 Message-ID: <20261022215115.19680-2-philmd@oss.qualcomm.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20261022215115.19680-1-philmd@oss.qualcomm.com> References: <20261022215115.19680-1-philmd@oss.qualcomm.com> X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=Gt3XaU1C c=1 sm=1 tr=0 ts=6ada855d cx=c_pps a=HLyN3IcIa5EE8TELMZ618Q==:117 a=4s3hRJSeHn4rkQlkrse1kQ==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=M51BFTxLslgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=EUspDBNiAAAA:8 a=EMdT0scSaJAOcc9uYYYA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=bTQJ7kPSJx9SKPbeHEYW:22 X-Proofpoint-GUID: tF0Ix-5atlICf_YPnRpJ1MRo-cE6sWht X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDIyMDA4NyBTYWx0ZWRfX5Ew3ru59tGTu lepEY5Hn80CJcG4qWD2TIxtypXLCUfNniYrsC3s+EBoFdPuwP54D+gl3Q/JhZvGJWWQj0VtrZqB Sohl+bf+qhgghKpKR5eCem3TFB5suaAUhUNovodNtRlUzK+PLGRa75VH5zbZR8LoJ/jvT2yggXs N6Z406jWQU8dbggzXSathgXndZsYZKJtmms0wjgmebFRb0RI2GEVKg5ReRhUlcy19Q83U+hWIh1 w0+4SsaBlHO5VD0iBnGZ6TXAhFK1fPZGz4I2OuySEd7EeyT2YYtO5yJkFgh0P5Zf7zWl7CXBTKT PTZGEU8m7ZjZVF8Kf086/8AfuXjPmYjjLvcBrqmGXUOxNQG3Rur2xivPkmJXaGkxC3kig8ANmqY rxlCHeObrkSHXSQIa7yQAJQNaTeIyWSBPF1GncpfM64ISVXqEE/5nwEfB7mnwPP/J7/XC/8z1f5 0/I/aqFE2IlW63c08kg== X-Proofpoint-Spam-Info: AW1haW4tMjYxMDIyMDA4NyBTYWx0ZWRfX9QNc9nJTdrrp 7TIXVH6vF1Yf47BRVa89MbDA3T/ZMvaFn607bJp7lPYr2EYHOksXKXcwhNmhHyaWp+/nREW6IRW 9IDE6ADNi2g7VWxCekdJQBPXn4enWG4= X-Proofpoint-ORIG-GUID: tF0Ix-5atlICf_YPnRpJ1MRo-cE6sWht X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-10-22_06,2026-10-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 spamscore=0 suspectscore=0 malwarescore=0 adultscore=0 clxscore=1015 priorityscore=1501 impostorscore=0 phishscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610220087 Received-SPF: pass client-ip=205.220.168.131; envelope-from=philmd@oss.qualcomm.com; helo=mx0a-0031df01.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Archive: List-Post: List-Help: List-Subscribe: , Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_PASS, SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Since commit ed63ec0d22c ("ARRAY_SIZE: check that argument is an array"), passing a pointer to ARRAY_SIZE() is a build error. Document that. Signed-off-by: Philippe Mathieu-Daudé --- include/qemu/osdep.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h index 1ec5b42230b..5d5695ade28 100644 --- a/include/qemu/osdep.h +++ b/include/qemu/osdep.h @@ -528,6 +528,12 @@ void QEMU_ERROR("code path is reachable") */ #define QEMU_IS_ARRAY(x) (!__builtin_types_compatible_p(typeof(x), \ typeof(&(x)[0]))) +/** + * ARRAY_SIZE() - Return the number of elements of an array + * @x: the array + * + * Note: fails to build if @x is a pointer. + */ #ifndef ARRAY_SIZE #define ARRAY_SIZE(x) ((sizeof(x) / sizeof((x)[0])) + \ QEMU_BUILD_BUG_ON_ZERO(!QEMU_IS_ARRAY(x))) -- 2.55.0