http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46122
Summary: PROTECTED check too strict
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: bur...@gcc.gnu.org
gfortran rejects valid
<protected_pointer>%<component>
references, cf. "OK 3" and "OK 4" below.
The test case was created by Jared Ahern and the issue was reported to
http://groups.google.com/group/comp.lang.fortran/browse_thread/thread/6a866eb893ad8473
Note: The OK/Invalid lines are according to my understanding; no guarantee that
those are correct.
MODULE amod
IMPLICIT NONE
TYPE foo
INTEGER :: i = 4
INTEGER, POINTER :: j => NULL()
END TYPE foo
TYPE(foo), SAVE, PROTECTED :: a
TYPE(foo), SAVE, PROTECTED, POINTER :: b
INTEGER, SAVE, PROTECTED :: i = 5
INTEGER, SAVE, PROTECTED, POINTER :: j => NULL()
contains
subroutine alloc()
allocate(b,j)
end subroutine alloc
END MODULE amod
PROGRAM test
USE amod
IMPLICIT NONE
INTEGER, TARGET :: k
TYPE(foo), TARGET :: c
k = 2 ! local
c%i = 9 ! local
call alloc()
! In parentheses: compiler gives error for that line
! gfortran 4.6/Oct, g95 Aug 2010, NAG 5.1, ifort 11.1,
! pathf95 3.2.99, PGI 10.5 (compiles without error), crayftn
i = k ! Invalid 1 (gfortran NAG g95 ifort pathf95 cray)
j => k ! Invalid 2 (gfortran g95 ifort pathf95 cray)
j = 3 ! OK 1 ( ifort pathf95 cray)
a = c ! Invalid 3 (gfortran NAG g95 ifort pathf95 cray)
a%i = k ! Invalid 4 (gfortran NAG g95 ifort pathf95 cray)
a%j => k ! Invalid 5 (gfortran NAG g95 ifort pathf95 cray)
a%j = 5 ! OK 2 ( g95 ifort pathf95 cray)
b => c ! Invalid 6 (gfortran g95 ifort pathf95 cray)
b%i = k ! OK 3 (gfortran ifort [bug] cray)
b%j => k ! OK 4 (gfortran g95 ifort [bug] cray)
b%j = 5 ! OK 5 ( ifort [bug] cray)
END PROGRAM test
