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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/55850] New: [OOP] SELECT TYPE issues Date: Wed, 02 Jan 2013 22:43:00 -0000 [thread overview] Message-ID: <bug-55850-4@http.gcc.gnu.org/bugzilla/> (raw) http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55850 Bug #: 55850 Summary: [OOP] SELECT TYPE issues Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Keywords: accepts-invalid, ice-on-invalid-code Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned@gcc.gnu.org ReportedBy: burnus@gcc.gnu.org CC: pault@gcc.gnu.org a) Accepts invalid with coindexed variables. Fortran 2008: R804 association is associate-name => selector R805 selector is expr or variable C801 (R804) If selector is not a variable or is a variable that has a vector subscript, associate-name shall not appear in a variable definition context (16.6.7). C802 (R804) An associate-name shall not be the same as another associate-name in the same associate-stmt. C803 (R805) variable shall not be a coindexed object. C804 (R805) expr shall not be a variable. I think that prohibits: associate (myname => coarray[i]) For ASSOCIATE, one gets: associate (x => caf[4]) 1 Error: Association target at (1) must not be coindexed But for SELECT TYPE, it is accepted: module gn type :: ncb end type ncb type, public :: tn class(ncb), allocatable :: cb(:)[:] end type tn contains integer function name(self) implicit none class (tn), intent(in) :: self select type (component => self%cb(1)[4]) ! INVALID due to the "[4]" end select end function name end module gn Note: The problem is not the coarray, just the coindex (gfc_is_coindexed). b) ICE with the following: select type (t = self%cb) Note the "=" opposed to "=>". Backtrace: 0x5e32d0 gfc_undo_symbols() ../../gcc/fortran/symbol.c:2972 0x5af3aa reject_statement ../../gcc/fortran/parse.c:1747 0x5af4dc match_word ../../gcc/fortran/parse.c:72 module gn type :: ncb end type ncb type, public :: tn class(ncb), allocatable :: cb end type tn contains integer function name(self) implicit none class (tn), intent(in) :: self select type (t = self%cb) end select end function name end module gn c) The following also ICEs: 0x5cd395 resolve_select_type ../../gcc/fortran/resolve.c:7791 0x5cd395 resolve_code ../../gcc/fortran/resolve.c:9707 module gn type :: ncb end type ncb type, public :: tn type(ncb), allocatable :: cb end type tn contains integer function name(self) implicit none class (tn), intent(in) :: self select type (t => self%cb) type is (ncb) t = 5 end select end function name end module gn
next reply other threads:[~2013-01-02 22:43 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2013-01-02 22:43 burnus at gcc dot gnu.org [this message] 2013-01-02 22:46 ` [Bug fortran/55850] " burnus at gcc dot gnu.org 2014-03-22 14:42 ` dominiq at lps dot ens.fr 2014-05-02 11:31 ` burnus at gcc dot gnu.org
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