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bh=Ftuf/qMfutehdCM+flcS0RdoI8ExhkhhkgfqaBZ1dUA=; b=c6R88Gx5rXkNI6Lm8oJuJt05IKGyayWvithRr7G5s+ysJwsVzam1TWpRVTmF97JN1V+6MT kjrCzEb+bD2wGc1Z6bRdhwDdYry2+gMKMA/urWQY6n9Dyf6I/Nv3jk84NqvNYIwHS+bpk3 5Uql93nbsIcuZaW+tBp5aTt4cMN5KY8= X-MC-Unique: _9nIGdt9PoyiqDWuDH4zTg-1 From: marcandre.lureau@redhat.com To: qemu-devel@nongnu.org Cc: thuth@redhat.com, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Stefan Weil Subject: [PATCH] win32: avoid discarding the exception handler Date: Mon, 25 Sep 2023 15:39:42 +0400 Message-ID: <20230925113942.267924-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 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=170.10.129.124; envelope-from=marcandre.lureau@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: 12 X-Spam_score: 1.2 X-Spam_bar: + X-Spam_report: (1.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-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, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_SBL_CSS=3.335, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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 @redhat.com) X-ZM-MESSAGEID: 1695642067789100003 From: Marc-Andr=C3=A9 Lureau In all likelihood, the compiler with lto doesn't see the function being used, from assembly macro __try1. Help it by marking the function has being used. Fixes: https://gitlab.com/qemu-project/qemu/-/issues/1904 Fixes: commit d89f30b4df ("win32: wrap socket close() with an exception han= dler") Signed-off-by: Marc-Andr=C3=A9 Lureau Reviewed-by: Thomas Huth --- include/qemu/compiler.h | 6 ++++++ util/oslib-win32.c | 2 +- 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/include/qemu/compiler.h b/include/qemu/compiler.h index a309f90c76..5c7f63f351 100644 --- a/include/qemu/compiler.h +++ b/include/qemu/compiler.h @@ -197,4 +197,10 @@ #define BUILTIN_SUBCLL_BROKEN #endif =20 +#if __has_attribute(used) +# define QEMU_USED __attribute__((used)) +#else +# define QEMU_USED +#endif + #endif /* COMPILER_H */ diff --git a/util/oslib-win32.c b/util/oslib-win32.c index 19a0ea7fbe..55b0189dc3 100644 --- a/util/oslib-win32.c +++ b/util/oslib-win32.c @@ -479,7 +479,7 @@ int qemu_bind_wrap(int sockfd, const struct sockaddr *a= ddr, return ret; } =20 -EXCEPTION_DISPOSITION +QEMU_USED EXCEPTION_DISPOSITION win32_close_exception_handler(struct _EXCEPTION_RECORD *exception_record, void *registration, struct _CONTEXT *context, void *dispatcher) --=20 2.41.0