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Mon, 08 Jul 2024 11:17:18 -0700 (PDT) Date: Mon, 8 Jul 2024 11:17:09 -0700 Mime-Version: 1.0 X-Mailer: git-send-email 2.45.2.803.g4e1b14247a-goog Message-ID: <20240708181709.27410-1-rkir@google.com> Subject: [PATCH] iov: don't use void* in pointer arithmetic in headers From: Roman Kiryanov To: qemu-devel@nongnu.org Cc: jansene@google.com, mett@google.com, jpcottin@google.com, pbonzini@redhat.com, Roman Kiryanov Received-SPF: pass client-ip=2607:f8b0:4864:20::649; envelope-from=3Li2MZgQKCvMmfdmbjjbgZ.XjhlZhp-YZqZgijibip.jmb@flex--rkir.bounces.google.com; helo=mail-pl1-x649.google.com X-Spam_score_int: -95 X-Spam_score: -9.6 X-Spam_bar: --------- X-Spam_report: (-9.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, USER_IN_DEF_DKIM_WL=-7.5 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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org void* pointer arithmetic is a GCC extentension which could not be available in other build tools (e.g. C++). This changes removes this assumption. Signed-off-by: Roman Kiryanov --- include/qemu/iov.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/qemu/iov.h b/include/qemu/iov.h index 63a1c01965..57afab370c 100644 --- a/include/qemu/iov.h +++ b/include/qemu/iov.h @@ -43,7 +43,7 @@ iov_from_buf(const struct iovec *iov, unsigned int iov_cnt, { if (__builtin_constant_p(bytes) && iov_cnt && offset <= iov[0].iov_len && bytes <= iov[0].iov_len - offset) { - memcpy(iov[0].iov_base + offset, buf, bytes); + memcpy((char *)iov[0].iov_base + offset, buf, bytes); return bytes; } else { return iov_from_buf_full(iov, iov_cnt, offset, buf, bytes); @@ -56,7 +56,7 @@ iov_to_buf(const struct iovec *iov, const unsigned int iov_cnt, { if (__builtin_constant_p(bytes) && iov_cnt && offset <= iov[0].iov_len && bytes <= iov[0].iov_len - offset) { - memcpy(buf, iov[0].iov_base + offset, bytes); + memcpy(buf, (const char *)iov[0].iov_base + offset, bytes); return bytes; } else { return iov_to_buf_full(iov, iov_cnt, offset, buf, bytes);