From owner-freebsd-standards@freebsd.org Thu Jun 13 19:27:39 2019 Return-Path: Delivered-To: freebsd-standards@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 2B7B215BADC0 for ; Thu, 13 Jun 2019 19:27:39 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id AB6046B853 for ; Thu, 13 Jun 2019 19:27:38 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 66F5D15BADBF; Thu, 13 Jun 2019 19:27:38 +0000 (UTC) Delivered-To: standards@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 5447515BADBE for ; Thu, 13 Jun 2019 19:27:38 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.ysv.freebsd.org (mxrelay.ysv.freebsd.org [IPv6:2001:1900:2254:206a::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.ysv.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id B1FF36B852 for ; Thu, 13 Jun 2019 19:27:37 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.ysv.freebsd.org (Postfix) with ESMTPS id DEC5A1558F for ; Thu, 13 Jun 2019 19:27:36 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id x5DJRaEP057102 for ; Thu, 13 Jun 2019 19:27:36 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id x5DJRaEC057101 for standards@FreeBSD.org; Thu, 13 Jun 2019 19:27:36 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: standards@FreeBSD.org Subject: [Bug 238547] gmtime does not return NULL if the input cannot be represented as struct tm Date: Thu, 13 Jun 2019 19:27:37 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: standards X-Bugzilla-Version: 12.0-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: urisimchoni@gmail.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: standards@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-standards@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Standards compliance List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 13 Jun 2019 19:27:39 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D238547 --- Comment #1 from Uri Simchoni --- Correction - if the input cannot be represented as struct tm, gmtime returns whatever's in it's internal struct tm, and does not even set errno. For example: #include #include #include #include #include int main() { time_t max_time =3D 0x7fffffffffffffffll; int e; errno =3D 0; tm =3D gmtime(&max_time); e =3D errno; printf("gmtime(0x7fffffffffffffffll) =3D=3D %stm_year =3D %d errno =3D = %d\n\n", asctime(tm), tm->tm_year, e); max_time =3D 60000000000000000ll; errno =3D 0; tm =3D gmtime(&max_time); e =3D errno; printf("gmtime(60000000000000000ll) =3D=3D %stm_year =3D %d errno =3D %= d\n\n", asctime(tm), tm->tm_year, e); max_time =3D 0x7fffffffffffffffll; errno =3D 0; tm =3D gmtime(&max_time); e =3D errno; printf("gmtime(0x7fffffffffffffffll) =3D=3D %stm_year =3D %d errno =3D = %d\n", asctime(tm), tm->tm_year, e); return 0; } Yields the following output: gmtime(0x7fffffffffffffffll) =3D=3D Sun Jan 0 00:00:00 1900 tm_year =3D 0 errno =3D 0 gmtime(60000000000000000ll) =3D=3D Sat May 29 10:40:00 1901326280 tm_year =3D 1901324380 errno =3D 0 gmtime(0x7fffffffffffffffll) =3D=3D Sat May 29 10:40:00 1901326280 tm_year =3D 1901324380 errno =3D 0 --=20 You are receiving this mail because: You are the assignee for the bug.=