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[88.187.86.199]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3d0a7691340sm14439034f8f.39.2025.09.01.06.26.37 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Mon, 01 Sep 2025 06:26:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1756733199; x=1757337999; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=L+dSMANYXYS4eX2wt62pDprg7NzemwQS+AGCY6LE+2A=; b=i8CsUBVWCPUI1LiCR4aJlKMSWtaH3rWgG01BKSsVA1qP+aFFLsPRExjGqxr0V4Ffoc JKdUWTcbHzPOKKSiald8IrWMOiWOpPZcn8Kx4wpZ0cqWiu2SeaHvrXKcwPbsaYuVJhIu v0GH+QdxoliOR/Sz1aBjSA+219YS3NJdZ5lgeTA+nQkGYl21aUYHTXVRPCN4B40S+DIF ebCaFYjZ7tHUxxGoD1bkIetGgg/sl9DXiqvvmBt8CFtkUJxMpUvP/2PxNnL7nA7RhvqM DtbOk7Lj+Iw9Is1af/voeL5A2uZFlUu30nzUvE+8LR3NWJCEULhqjgzF42u6jD9LgUNm t1kg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756733199; x=1757337999; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=L+dSMANYXYS4eX2wt62pDprg7NzemwQS+AGCY6LE+2A=; b=XC6dYLsNRNNqGjFNguhYD1b4IWZXXH2/JT5y2MJcRqShrstoSGRCI6Sf248tfNb/cX U4Y23w2MeELTL3NBiP5GPtc3yndTsOfWo49a42xC8+942+3V+WCyQlgsxmLZ4BHUyjV7 leAjsDLtQvszNN+8hmuTHZBPnlZf0FHA/calqLXqlcG4//2IryFuXS2YM0uD+1UdQ8Jm R+fcyyI8KnQUFukT7lgoe15x/GQtt0zoBN+m8OVKXh233K+3zlgScw8hh3wLZ4/Gfe5I UuduGLBfS9BWRs+1I09L918rYXRv4Dt0dq+sOm4Eg2KdQWqW+JLplbvObl7FJibAPsgY jhig== X-Gm-Message-State: AOJu0YwW5xnzLCkSN15QMpDSujQXV85A9zbm36bJBx9fXW0NSvUBRIhf RpsrkpK/kcHu5vAfLiSLdnVUXwvz2Xvv+fwyDrVojkmuVWIIQ3qa9lRONuilaXHoZQoH4vw78+E MKo3y X-Gm-Gg: ASbGncsYl2a7QqdphQ2cAzVfPCkVZw+nHD/MBhXhMbARSNWxgLZQrkmTyh35VxfIiJo PYpUV7DYSqqRdZSqW+kK4xt45V8YlLja6RMyIVoLt4z0NBsGk3C9BEFiZ+DNIGij646w2OyFzLT sy8jvbQVkL4jnABEEyqmJzIAEs8ccqC77UtOGma3mIGBM8Zwg/LvWOQEMZXGAnYM2BIt/UagbyH sMxB9WjMSbbKB+fydpJkh8N2EpRpkVbr6wTyFp4sppgbEDykXQomp51CpMWq0drZimEBmUVzps9 BDZHUvazjbYh+NAYn1KKy/GQifDUk/tmM1lKeej1ctCNASX9dWkc/ZUUyQ39DJSGp+MWrlVMVzg z/MnI1JKeHoEyCPOS8qGp35Tt2QlINIQPqdP9XXDu9fmSJVh+hLr7Ekczjrd5Qnj3H3cjWPUk8D D051bL9tU= X-Google-Smtp-Source: AGHT+IH/biFnPlU5sduD1LlOAZlDqq09up2/DXS+LzpPSrlccEYwoUtgNnCXPzTclSesIQRP6VzILg== X-Received: by 2002:a05:6000:4205:b0:3d9:415c:b146 with SMTP id ffacd0b85a97d-3d9415cb164mr246904f8f.15.1756733198715; Mon, 01 Sep 2025 06:26:38 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Paolo Bonzini , qemu-ppc@nongnu.org, Peter Maydell , Harsh Prateek Bora , Stefan Hajnoczi , Nicholas Piggin , Chinmay Rath , kvm@vger.kernel.org, Glenn Miles , Thomas Huth , =?UTF-8?q?Alex=20Benn=C3=A9e?= , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Pierrick Bouvier , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Subject: [PATCH v2 2/3] buildsys: Prohibit alloca() use on system code Date: Mon, 1 Sep 2025 15:26:25 +0200 Message-ID: <20250901132626.28639-3-philmd@linaro.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250901132626.28639-1-philmd@linaro.org> References: <20250901132626.28639-1-philmd@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::431; envelope-from=philmd@linaro.org; helo=mail-wr1-x431.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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_NONE=-0.0001, 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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1756733248765116600 Similarly to commit 64c1a544352 ("meson: Enable -Wvla") with variable length arrays, forbid alloca() uses on system code. There are few uses on ancient linux-user code, do not bother there. Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Pierrick Bouvier Reviewed-by: Stefan Hajnoczi --- meson.build | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/meson.build b/meson.build index 0d42de61ae6..3d1dc2e9e26 100644 --- a/meson.build +++ b/meson.build @@ -775,6 +775,10 @@ if host_os !=3D 'darwin' endif endif =20 +if have_system + warn_flags +=3D ['-Walloca'] +endif + # Set up C++ compiler flags qemu_cxxflags =3D [] if 'cpp' in all_languages --=20 2.51.0