https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124639
Bug ID: 124639
Summary: New Fortran 2018 IMPORT statement fails with derived
types
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: martinjotte at gmail dot com
Target Milestone: ---
Hello,
The new "import, only" Fortran syntax added to the latest compiler does not
seem to work with derived types. Consider this simple program:
program test
implicit none
type mytype
integer :: i
real :: r
end type mytype
type(mytype) :: myvar
read(*,*) myvar%i
call sub
contains
subroutine sub
import, only: myvar
write(*,*) myvar%i
end subroutine sub
end program test
Compiling with a recent development gfortran gives:
gfortran test2.f90
test2.f90:18:14:
18 | write(*,*) myvar%i
| 1
Error: F2018: C8102 'mytype' at (1) is host associated but does not appear in
an IMPORT or IMPORT, ONLY list
It looks like gfortran is expecting the type definition along with the variable
name in the import statement. If I change the import line to "import, only:
myvar, mytype" it does compile, but this should not be necessary.
I am using: gfortran --version
GNU Fortran (GCC) 16.0.1 20260325 (experimental)
