X-Recipient: archive-cygwin@delorie.com DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:subject:to:references:from:message-id:date :mime-version:in-reply-to:content-type; q=dns; s=default; b=qErL 92Y24OL806j5FuWhPZxdtwL8+MLKPjtTyY9k9s4aQ0DK69zEhSIgDGqcWka3gwJQ pSeL+63gf5G8R80/CLyKwEJgY7Imu0U32w4Lgfxg6bY6iUvqrcZzzm9/5kyJwh22 HHMbh4pqXztmWtWYpsx+cVC9Cifj+9g81IcX1AY= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:subject:to:references:from:message-id:date :mime-version:in-reply-to:content-type; s=default; bh=+kaJk1nuIh vJBjjAAI/QL6TVjMA=; b=jOa5R9LXri8HWONMcU33kqy9gLhYIfdmDyAVvohFK8 rk+gHPz4Y69F39Gc6oZiguUBKf4ELW5ICIxm+wqZ95+gLTLu+BSK0Zq/leWB/UOA oDe8713U3OYy1vdwG50u0ZcUzqFWiQBgi1DdmRLdZuFp9EY27dWyCB4yVIKKEFCa I= Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=0.1 required=5.0 tests=BAYES_00,FREEMAIL_FROM,KAM_NUMSUBJECT,RCVD_IN_DNSWL_NONE,SPF_PASS,URIBL_RHS_DOB autolearn=no version=3.3.2 spammy=recalled X-HELO: mail-wm0-f54.google.com X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:subject:to:references:from:openpgp :autocrypt:message-id:date:user-agent:mime-version:in-reply-to; bh=C8t78/rBR7aIIbywOlFXaJpnt9+8KuYk3j3DIW0OpBo=; b=mE/6v1ZkwSJrQ27AS3rNmaWD7CoEPofprXryVGjZ89/zbtZBgZQlren8FwHeuOIkvV pqwyxizAfp/cU9j+aByjYJKY3boey2pzAu8Uw7B39a2Q2lLdLd9eJNQaVBToht9euYfN OLHKrf4NKqpONMuD3gpPONc3IjBv8XuWDYXbtc83AGHdQIH7jsNpDdKRzxTXmt/6/7lr Dm6zT5bdxx/Cf+vgKeleTiFd4ls7+UgNbvL/OiWDdUsfYiugD+DjIS5iYD/C9RhT7sf3 VeOSqvX/zPbD3EO08s7jbaQG4rmFyg6ydOfAOt5C37G7j2yakCT+TqtUH7lIo1v+3w7d jtig== X-Gm-Message-State: ALQs6tAKiNk24Pa0FpkcfPA8mx4jeZdfubSNvS+06zN3RHLJ1snvCd0c GfBinOYSEKiQNOVDw6YW/ov3Pw== X-Google-Smtp-Source: AIpwx48zGt94hUuMbeWtRzvbUTL6P1u3KS/3rf/MGOWnArKGz9CY7H3U6qPLMvkPa1kMetPRQsRNzQ== X-Received: by 10.80.243.149 with SMTP id g21mr42611065edm.13.1524739979986; Thu, 26 Apr 2018 03:52:59 -0700 (PDT) Subject: Re: Bug: Synchronous signals broken on Cygwin 64 To: cygwin@cygwin.com References: From: Thomas Zimmermann Openpgp: preference=signencrypt Autocrypt: addr=tdz@users.sourceforge.net; prefer-encrypt=mutual; keydata= xsDiBEQ8FzARBAD9199cx5bJZ7nvSuaGA6ZLv1WyPtIeKWXj8mOfpn/tfmKUlzFijUChGBGP 1/FGssV/KnR+1zWdxsgtYuE8bbslJEGRP/fgaOgxisCKjkU8/SKXKKYoxS568m2TwBO512so PTj2mC3yWz4nU7ZTmgoJzf8r8TDZ3GBbHCoO21tUjwCgkjiAm08Kh72NtbMysXW88eOcFfUE ANvt1VrkyDjLD/viv7MHYUMLKLaFdNZUnJi4Rx6NwIqNxLDeGyPPp17/X2ls397Wl9PAZRJB 96/3E5WAOCyaKJc605luoyvv0CJ5+VuAQDVXKGdX/jr7EnhkyXmcm8ChKR/1Lct6jn5Wp922 utdklQcYEkSNMJbRsKReluxXaD6kBAC2qI/mOyRtJLxoszYG2hLf1BAOopJb13J1TCRQv3Df El2zmbPyYOfMQzbnFBrZ5yMve6I5/9hWksMMUWrdtgGDEsBFMa8iFb9FPsbKrDBmR66wpNFf s7GPEcWpIueBGu+vmXtUN8zE4mvUxFixc7iiPx46TCctKFqujGf6ubhlpc0tVGhvbWFzIFpp bW1lcm1hbm4gPHRkekB1c2Vycy5zb3VyY2Vmb3JnZS5uZXQ+wl0EExECAB0FAkQ8FzAGCwkI BwMCBBUCCAMEFgIDAQIeAQIXgAAKCRDZ2tfUTvHfCIydAJ4ndgH+dGp131Bx0su0VkWIiCfg iwCdHB339NSWt0kXY4+/Zhfpenzj9EXOwE0ERDwXMRAEAKcJyo9UpIp4Z4Mer58CL+ErcgwU xWdH5yhRV0++D70R6N5e+Yoa20V5trrNhpCEeAvjLW77VRqCYPO3hn0mmN2jSO8qMdBn7rXS ND9WFrlnSSCGsYQeoKj0z2KlQ8Waxg+r3b23azbMinF30x9303S3ZhrWvSf8wxIgd+u3HeXj AAMGA/9s/AWniacRR8T2ABN0ASjXp1SCSYmezL9Jp8MfSWvLcNrB/0Oi/o3+1HfJiTHg7o8l H6tpqScWsKpPZbYxmo9vb9sVjAOLzGpeV8S6Pe1pcXfiOuZLMJ5OTga6GxWimmP7rrWKTIlP x57wXD+v6c4A4VYW973YXNh1mVXwON3ydMJGBBgRAgAGBQJEPBcxAAoJENna19RO8d8IASEA niQqMp4Yd00/t47D09opsugE9GBHAJ9sJZgtyq9lLB3xCFm16nooejR/XA== Message-ID: <4a3b47db-fcdb-85f0-ec80-4cffcb7c495a@users.sourceforge.net> Date: Thu, 26 Apr 2018 12:52:54 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="mgQhId5899VVIK3afak9V7NRsoar96ELL" X-IsSubscribed: yes --mgQhId5899VVIK3afak9V7NRsoar96ELL Content-Type: multipart/mixed; boundary="S4fXgBBRJesGFoZDzjoCrMKSoQSCTldqW"; protected-headers="v1" From: Thomas Zimmermann To: cygwin@cygwin.com Message-ID: <4a3b47db-fcdb-85f0-ec80-4cffcb7c495a@users.sourceforge.net> Subject: Re: Bug: Synchronous signals broken on Cygwin 64 References: In-Reply-To: --S4fXgBBRJesGFoZDzjoCrMKSoQSCTldqW Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable Hi Am 26.04.2018 um 12:45 schrieb Houder: >> The expected behavior is that an installed signal handler runs exactly >> once for a signal and the OS terminates the program if the handler >> returns. This works on 32-bit Cygwin. From my observation, Cygwin 64 >> differs in the follow ways: >=20 > .. uhm, unless SA_RESETHAND (sa_flags) has been specified, I expect the > handler to be invoked again and again ... What I mean is that the installed signal handler is re-called constantly for the same HW exception (div-by-zero in this case). It is as if there's an endless loop around the signal-handler function. Best regards Thomas --=20 Implement thread-safe and fault-tolerant software in C: visit picotm.org -- GnuPG: http://tdz.users.sourceforge.net/tdz.asc Fingerprint: 16FF F599 82F8 E5AA 18C6 5220 D9DA D7D4 4EF1 DF08 Website: tzimmermann.org --S4fXgBBRJesGFoZDzjoCrMKSoQSCTldqW-- --mgQhId5899VVIK3afak9V7NRsoar96ELL Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EARECAB0WIQQW//WZgvjlqhjGUiDZ2tfUTvHfCAUCWuGvhgAKCRDZ2tfUTvHf CHDAAKCLUXrBPXvZNcTIxhPs5WCVSLh0OQCfa7YlbY3w08dwDFGUo20FjH/Sprw= =qWcZ -----END PGP SIGNATURE----- --mgQhId5899VVIK3afak9V7NRsoar96ELL--