From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id E7FCF3854821; Wed, 28 Apr 2021 12:35:35 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org E7FCF3854821 From: "christophm30 at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/100316] New: Regression: __clear_cache() does not support NULL-pointer arguments Date: Wed, 28 Apr 2021 12:35:35 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: 11.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: christophm30 at gmail dot com 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: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: 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, 28 Apr 2021 12:35:36 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100316 Bug ID: 100316 Summary: Regression: __clear_cache() does not support NULL-pointer arguments Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: christophm30 at gmail dot com Target Milestone: --- Commit c05ece9 changed __clear_cache () such, that it no longer accepts num= eric values as arguments. In riscv-pk the following code is used to clear the instruction cache: __clear_cache(0, 0); However, this no longer compiles: ../pk/pk.c: In function 'run_loaded_program.constprop': ../pk/pk.c:177:3: error: both arguments to '__builtin___clear_cache' must be pointers 177 | __clear_cache(0, 0); | ^~~~~~~~~~~~~~~~~~~ Also using "NULL" or "(void*)0" does not help. The corresponding bug ticket for PK can be found here: https://github.com/riscv/riscv-pk/issues/239 Is there a chance to loosen the restrictions for the arguments?=