From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 334543850426; Wed, 23 Sep 2020 16:43:33 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 334543850426 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1600879413; bh=1rzNJbq0Q01w/3xIjO2M4xcMO3Oa4JOjdNCytkjZqtg=; h=From:To:Subject:Date:In-Reply-To:References:From; b=Rq5qkDyMDedqgbh3uJhINYpqm+uYvOQe5lWu676yrOb7Od3l8C5dffnYPzDWNa92m hV2z4IICAEo/+8M2dGrHiMX21f7BpXlsYIC/SkeGQJ90IZZ8lmFUZaVJszEeQ1JLlP JKjxtFm7mdeOZ+CMddxqVjIPvOi80LWMtLJjuG0E= From: "kargl at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/97176] Cannot return deferred length strings when using -fno-automatic Date: Wed, 23 Sep 2020 16:43:33 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: fortran X-Bugzilla-Version: 10.2.1 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: kargl at gcc dot gnu.org X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Sep 2020 16:43:33 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97176 kargl at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |kargl at gcc dot gnu.org --- Comment #1 from kargl at gcc dot gnu.org --- Workaround 1. Don't use -fno-automatic if you use a RESULT variable. Workaround 2. Don't use a RESULT variable. Workaround 3. Explicitly give entities the SAVE attribute whereby your testfunc() becomes function testfunc(string) result(res) character(:), allocatable, save :: res character(*), intent(in) :: string res =3D string end function testfunc which leads to the informative error message % gfcx -o z a.f90 && ./z a.f90:10:42: 10 | character(:), allocatable, save :: res | 1 Error: RESULT attribute conflicts with SAVE attribute at (1)=