From 4ceda20498ec82d0fd24a2ab1e56c6c1e38b0174 Mon Sep 17 00:00:00 2001 From: Janus Weil Date: Sat, 3 Dec 2016 19:48:48 +0100 Subject: [PATCH] re PR fortran/43207 ([OOP] invalid (pointer) assignment to and from abstract non-polymorphic expressions) 2016-12-03 Janus Weil PR fortran/43207 * primary.c (gfc_match_varspec): Reject nonpolymorphic references to abstract types. 2016-12-03 Janus Weil PR fortran/43207 * gfortran.dg/abstract_type_9.f90: New test case. From-SVN: r243224 --- gcc/fortran/ChangeLog | 6 ++++ gcc/fortran/primary.c | 10 +++++- gcc/testsuite/ChangeLog | 5 +++ gcc/testsuite/gfortran.dg/abstract_type_9.f90 | 34 +++++++++++++++++++ 4 files changed, 54 insertions(+), 1 deletion(-) create mode 100644 gcc/testsuite/gfortran.dg/abstract_type_9.f90 diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog index eaae6961dfe..3489bc4a14e 100644 --- a/gcc/fortran/ChangeLog +++ b/gcc/fortran/ChangeLog @@ -1,3 +1,9 @@ +2016-12-03 Janus Weil + + PR fortran/43207 + * primary.c (gfc_match_varspec): Reject nonpolymorphic references to + abstract types. + 2016-12-03 Janus Weil PR fortran/42188 diff --git a/gcc/fortran/primary.c b/gcc/fortran/primary.c index 2cdc9a4a23c..f13b0f02f15 100644 --- a/gcc/fortran/primary.c +++ b/gcc/fortran/primary.c @@ -2222,7 +2222,15 @@ check_substring: } } - /* F2008, C727. */ + /* F08:C611. */ + if (primary->ts.type == BT_DERIVED && primary->ref + && primary->ts.u.derived && primary->ts.u.derived->attr.abstract) + { + gfc_error ("Nonpolymorphic reference to abstract type at %C"); + return MATCH_ERROR; + } + + /* F08:C727. */ if (primary->expr_type == EXPR_PPC && gfc_is_coindexed (primary)) { gfc_error ("Coindexed procedure-pointer component at %C"); diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 0d95973ef8a..84fc6fa83bc 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2016-12-03 Janus Weil + + PR fortran/43207 + * gfortran.dg/abstract_type_9.f90: New test case. + 2016-12-03 Janus Weil PR fortran/42188 diff --git a/gcc/testsuite/gfortran.dg/abstract_type_9.f90 b/gcc/testsuite/gfortran.dg/abstract_type_9.f90 new file mode 100644 index 00000000000..77d48ba61f5 --- /dev/null +++ b/gcc/testsuite/gfortran.dg/abstract_type_9.f90 @@ -0,0 +1,34 @@ +! { dg-do compile } +! +! PR 43207: [OOP] invalid (pointer) assignment to and from abstract non-polymorphic expressions +! +! Contributed by Tobias Burnus + + implicit none + type, abstract :: parent + integer :: i + end type + type, extends(parent) :: child + class(parent), pointer :: comp + end type + + type(child), target :: c1 + class(child), allocatable :: c2 + class(parent), pointer :: cp + + c1%parent = c1%parent ! { dg-error "Nonpolymorphic reference to abstract type" } + c2%parent = c1%parent ! { dg-error "Nonpolymorphic reference to abstract type" } + + cp => c1%comp + cp => c1%parent ! { dg-error "Nonpolymorphic reference to abstract type" } + + call sub(c1%comp) + call sub(c1%parent) ! { dg-error "Nonpolymorphic reference to abstract type" } + +contains + + subroutine sub(arg) + class(parent) :: arg + end subroutine + +end -- 2.30.2