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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/47805] New: [OOP] Overridding hidden (private) TPB is rejected Date: Fri, 18 Feb 2011 17:06:00 -0000 [thread overview] Message-ID: <bug-47805-4@http.gcc.gnu.org/bugzilla/> (raw) http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47805 Summary: [OOP] Overridding hidden (private) TPB is rejected Product: gcc Version: 4.6.0 Status: UNCONFIRMED Keywords: rejects-valid Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned@gcc.gnu.org ReportedBy: burnus@gcc.gnu.org CC: janus@gcc.gnu.org See http://j3-fortran.org/doc/year/11/11-141.txt and watch out for updates (11-141r1.txt etc.), approved by J3 meeting. Overriding a TBP seems to OK, if the TBP is hidden through accessibility (PRIVATE). Note (cf. example 2 in the IR): Abstract DT with private deferred TBP cannot be extended as one cannot implement the deferred TBP. The first example given in the file is rejected with: PROCEDURE,NOPASS :: p => p2 ! (2). 1 Error: 'p' at (1) must have the same number of formal arguments as the overridden procedure MODULE example1_m1 TYPE t1 CONTAINS PROCEDURE,PRIVATE,NOPASS :: p ! (1). END TYPE CONTAINS SUBROUTINE p PRINT *,'p' END SUBROUTINE SUBROUTINE do_p(x) CLASS(t1) x CALL x%p END SUBROUTINE END MODULE MODULE example1_m2 USE example1_m1 TYPE,EXTENDS(t1) :: t2 CONTAINS PROCEDURE,NOPASS :: p => p2 ! (2). END TYPE CONTAINS SUBROUTINE p2(n) PRINT *,'p2',n END SUBROUTINE END MODULE PROGRAM example1 USE example1_m2 TYPE(t2),TARGET :: x CLASS(t1),POINTER :: y y => x CALL do_p(x) ! (3): I expect this to print 'p'. CALL do_p(y) ! (4): I expect this to print 'p'. CALL x%p(13) ! (5): I expect this to print 'p2 13'. END PROGRAM
next reply other threads:[~2011-02-18 17:00 UTC|newest] Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-02-18 17:06 burnus at gcc dot gnu.org [this message] 2011-02-18 17:07 ` [Bug fortran/47805] " burnus at gcc dot gnu.org 2011-02-19 11:26 ` janus at gcc dot gnu.org 2011-02-19 14:23 ` janus at gcc dot gnu.org 2012-10-01 13:49 ` burnus at gcc dot gnu.org 2015-10-13 16:55 ` dominiq at lps dot ens.fr
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