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Fri, 12 Apr 2024 03:04:08 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGRU/t4cGza1xPrVQyJrQ62s4awbiG6ha8gvL968scZzu8kkZnJWW4qVpLcdiAfR7TUv9M4Wg== X-Received: by 2002:a05:6512:b94:b0:518:902d:8b98 with SMTP id b20-20020a0565120b9400b00518902d8b98mr736078lfv.18.1712916247845; Fri, 12 Apr 2024 03:04:07 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: Thomas Huth , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PULL 2/2] meson.build: Disable -fzero-call-used-regs on OpenBSD Date: Fri, 12 Apr 2024 12:04:01 +0200 Message-ID: <20240412100401.20047-3-pbonzini@redhat.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240412100401.20047-1-pbonzini@redhat.com> References: <20240412100401.20047-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -45 X-Spam_score: -4.6 X-Spam_bar: ---- X-Spam_report: (-4.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-2.49, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, 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+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1712916294483100001 From: Thomas Huth QEMU currently does not work on OpenBSD since the -fzero-call-used-regs option that we added to meson.build recently does not work with the "retguard" extension from OpenBSD's Clang. Thus let's disable the -fzero-call-used-regs here until there's a better solution available. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2278 Signed-off-by: Thomas Huth Reviewed-by: Philippe Mathieu-Daud=C3=A9 Message-ID: <20240411120819.56417-1-thuth@redhat.com> Signed-off-by: Paolo Bonzini --- meson.build | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/meson.build b/meson.build index c9c3217ba4b..91a0aa64c64 100644 --- a/meson.build +++ b/meson.build @@ -562,7 +562,11 @@ hardening_flags =3D [ # # NB: Clang 17 is broken and SEGVs # https://github.com/llvm/llvm-project/issues/75168 -if cc.compiles('extern struct { void (*cb)(void); } s; void f(void) { s.cb= (); }', +# +# NB2: This clashes with the "retguard" extension of OpenBSD's Clang +# https://gitlab.com/qemu-project/qemu/-/issues/2278 +if host_os !=3D 'openbsd' and \ + cc.compiles('extern struct { void (*cb)(void); } s; void f(void) { s.cb= (); }', name: '-fzero-call-used-regs=3Dused-gpr', args: ['-O2', '-fzero-call-used-regs=3Dused-gpr']) hardening_flags +=3D '-fzero-call-used-regs=3Dused-gpr' --=20 2.44.0