From debbugs-submit-bounces@debbugs.gnu.org Sun Jul 13 08:30:29 2025 Received: (at submit) by debbugs.gnu.org; 13 Jul 2025 12:30:29 +0000 Received: from localhost ([127.0.0.1]:52199 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1uavqe-0003P7-3N for submit@debbugs.gnu.org; Sun, 13 Jul 2025 08:30:29 -0400 Received: from lists.gnu.org ([2001:470:142::17]:47126) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1uaeXu-0004Pg-CR for submit@debbugs.gnu.org; Sat, 12 Jul 2025 14:01:59 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uaeXd-0005op-Qb for bug-guile@gnu.org; Sat, 12 Jul 2025 14:01:42 -0400 Received: from mail-0201.mail-europe.com ([51.77.79.158]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uaeXb-0003ki-CR for bug-guile@gnu.org; Sat, 12 Jul 2025 14:01:41 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail3; t=1752343288; x=1752602488; bh=dg1PtYXVwW1jfLqMgtfpA+hfNUxWPittVDTzJhJlW4Y=; h=Date:To:From:Subject:Message-ID:Feedback-ID:From:To:Cc:Date: Subject:Reply-To:Feedback-ID:Message-ID:BIMI-Selector; b=mbEUV0YX9BMxoTy7Un1TVMqm1G2F3TIpDB6CvsNbtqBN6H4dk9dsy6kl+Nmw7e3YF W/h14cOzeM2fA6GdVBt7UBNrH4tj8hAPst045AAerWa3n3MXSfqV7I1mC7nZ27Ex2q GKbMDED89Y0u+EEJd1vV7pkJpO/K0St6GvH7TCmcaurR6mV/qgWicjjnScc+vMxIZT izd4uxUhd3uzLb6t8Flu4ZqrL9q36fGhRsOUkfZJzcg4H40wGB/j2WM29XRdA8KAKO osqXTD0Op0bejuuc8AWkOgjaG5zOHeF+h6vU7NuL1IyejprNljZJ97Osc8GApQS0E0 0oDbAHG3wkMUQ== Date: Sat, 12 Jul 2025 18:01:24 +0000 To: "bug-guile@gnu.org" From: =?utf-8?Q?Th=C3=A9ophile_BR=C3=89ZOT?= Subject: hash of f32vectors is constant Message-ID: Feedback-ID: 8643120:user:proton X-Pm-Message-ID: 22b8bc95b0bd0594b1e0e39c8e3eabfee4bf5363 MIME-Version: 1.0 Content-Type: multipart/signed; protocol="application/pgp-signature"; micalg=pgp-sha512; boundary="------f1b65618cfc95b1d4a42557dec7e55ab24d682b7fbb83d5f66e0a08110c46fec"; charset=utf-8 Received-SPF: pass client-ip=51.77.79.158; envelope-from=theophile.brezot@protonmail.com; helo=mail-0201.mail-europe.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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: 1.0 (+) X-Debbugs-Envelope-To: submit X-Mailman-Approved-At: Sun, 13 Jul 2025 08:30:26 -0400 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -0.0 (/) This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --------f1b65618cfc95b1d4a42557dec7e55ab24d682b7fbb83d5f66e0a08110c46fec Content-Type: multipart/mixed;boundary=---------------------25a9bae381c23427631a54ac344c9bdf -----------------------25a9bae381c23427631a54ac344c9bdf Content-Transfer-Encoding: quoted-printable Content-Type: text/plain;charset=utf-8 Hello, Hashing two different f32vectors returns the same value: ``` (equal? (hash (f32vector 1) most-positive-fixnum) (hash (f32vector 2) most-positive-fixnum)) ; =3D> #t ``` This is wrong since these vectors are not equal?: ``` (equal? (f32vector 1) (f32vector 2)) ; =3D> #f ``` This has been tester on Guile v3.0.10-1.402e0df (guile-next install using Guix) and on Guile v3.0.9 (guile install using Guix) on a Debian Linux. The same behavior can be observed using f64vectors. This is in my opinion quite a serious bug since it degrades performance of hash tables to linear time (measuring my program performances led me to it) making them unusable (at least not directly usable) for such types. Best regards and thanks for your work, -- Th=C3=A9ophile BR=C3=89ZOT -----------------------25a9bae381c23427631a54ac344c9bdf-- --------f1b65618cfc95b1d4a42557dec7e55ab24d682b7fbb83d5f66e0a08110c46fec Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: ProtonMail wsC5BAEBCgBtBYJocqLoCZAG6vE9O+hvdUUUAAAAAAAcACBzYWx0QG5vdGF0 aW9ucy5vcGVucGdwanMub3Jn1WUhZz92dUW/m80rmsb6s7Y1zWkrdJkvlbGB QIywk1oWIQRmQ/mkmMVj+CC/efkG6vE9O+hvdQAAU5QH/ArE4BE/JXzoRucb 2RIK6OE0lt41x1AeUDNXUd1PhVOX3P0+2Eyb7p70B70KpWbHM6IFHGTMJm7Q hDL3ZVUizTBf2CENIz+H/I4+WyTYcZ6N2Oxu3nrWglwjjwhDQADbhM5nEB6l FiF3C8vwqgIyGQLo9mYNzxWHpM7Pm1BK/pb87ZXxqARM5JDxzZ6rTQzF8VKT EgE/BAZDwvMR2BAzn8daAJY+Nw3r8pajSYJ8vplvLKtiuWejc7Fg7/XAuwVU rbM63SjaXhv4OjH9zHjSqaM6CqVj29gpdahKrjdsLPcKEBlMaPdcQ2ESdrRt HQ9VIKjRjsmQtlppmuk2K/HK5oY= =kDnR -----END PGP SIGNATURE----- --------f1b65618cfc95b1d4a42557dec7e55ab24d682b7fbb83d5f66e0a08110c46fec--