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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug fortran/54992] New: [OOP] Wrong offset in the array offset calculation when using nonclass%class(index)%nonclass Date: Fri, 19 Oct 2012 20:34:00 -0000 [thread overview] Message-ID: <bug-54992-4@http.gcc.gnu.org/bugzilla/> (raw) http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54992 Bug #: 54992 Summary: [OOP] Wrong offset in the array offset calculation when using nonclass%class(index)%nonclass Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Keywords: wrong-code Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned@gcc.gnu.org ReportedBy: burnus@gcc.gnu.org CC: janus@gcc.gnu.org, pault@gcc.gnu.org As reported by Andrew Benson in the thread starting at http://gcc.gnu.org/ml/fortran/2012-10/msg00087.html The problem is that gfortran generates the wrong code for: targetNode%cBh(2)%hostNode => targetNode where "cBh" is a polymorphic array. The offset is calculated as ((base_type *)targetNode->_data->cBh->_data)[ index ].host Instead of the proper: targetNode->_data->cBh->_data.data + (index * targetNode->_data->cBh->_vptr_size) Test case: http://gcc.gnu.org/ml/fortran/2012-10/msg00100.html Analysis: http://gcc.gnu.org/ml/fortran/2012-10/msg00101.html
next reply other threads:[~2012-10-19 20:34 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-10-19 20:34 burnus at gcc dot gnu.org [this message] 2012-10-19 21:23 ` [Bug fortran/54992] [4.8 Regression] " janus at gcc dot gnu.org 2012-10-19 21:37 ` dominiq at lps dot ens.fr 2012-10-25 11:36 ` janus at gcc dot gnu.org 2012-11-07 10:03 ` jakub at gcc dot gnu.org 2012-12-26 17:56 ` pault at gcc dot gnu.org 2013-01-07 9:05 ` pault at gcc dot gnu.org 2013-01-07 19:11 ` pault at gcc dot gnu.org
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