From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 40895 invoked by alias); 7 Oct 2016 13:30:50 -0000 Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org Received: (qmail 40726 invoked by uid 48); 7 Oct 2016 13:30:36 -0000 From: "mcermak at redhat dot com" To: systemtap@sourceware.org Subject: [Bug translator/20672] New: buildok/dentry-embedded.stp regression Date: Fri, 07 Oct 2016 13:30:00 -0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: systemtap X-Bugzilla-Component: translator X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: mcermak at redhat dot com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: systemtap at sourceware dot 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://sourceware.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2016-q4/txt/msg00005.txt.bz2 https://sourceware.org/bugzilla/show_bug.cgi?id=3D20672 Bug ID: 20672 Summary: buildok/dentry-embedded.stp regression Product: systemtap Version: unspecified Status: NEW Severity: normal Priority: P2 Component: translator Assignee: systemtap at sourceware dot org Reporter: mcermak at redhat dot com Target Milestone: --- On rhel6, buildok/dentry-embedded.stp regressed. The new error is: =3D=3D=3D=3D=3D=3D=3D spawn stap -p4 --compatible=3D2.9 /root/systemtap/testsuite/buildok/dentry-embedded.stp semantic error: while processing function real_mount semantic error: type definition 'mount' not found in 'kernel': operator '@c= ast' at /usr/local/share/systemtap/tapset/type_defined.stpm:6:16 source: @defined(& @cast(0, @type) -> @member) ^ in expansion of macro: operator '@type_member_defined' at /usr/local/share/systemtap/tapset/linux/dentry.stp:160:6 source: if (@type_member_defined("mount", mnt_parent)) { ^ Pass 2: analysis failed. [man error::pass2] wait results: 12735 exp6 0 1 FAIL: buildok/dentry-embedded.stp =3D=3D=3D=3D=3D=3D=3D The regression seems to be caused by following commit: =3D=3D=3D=3D=3D=3D=3D commit 056cb27baac1ce3ab4d675dbbe4881afde801ca3 Author: Frank Ch. Eigler Date: Wed Jun 22 11:43:33 2016 -0400 PR18079: support nested autocast / @defined We now perform const-folding & dead-code-elision during the type resolution loop, whenever an autocast expression gets evaluated. This way, @defined(foo()->mm) type expressions can work as nature intended. This requires @defined() not to be short-circuit evaluated to 0 during a random const_folding process, so a flag is introduced to control its preservation or collapsing. For the last (assert_resolvability) pass in the type resolution loop, this flag is set to true, so that genuinely unresolvable @defined($expressions) do get mapped to 0 in time for a last elision. =3D=3D=3D=3D=3D=3D=3D --=20 You are receiving this mail because: You are the assignee for the bug.