https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86888
Bug ID: 86888
Summary: [F08] allocatable components of indirectly recursive
type
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: janus at gcc dot gnu.org
Target Milestone: ---
Test case:
type :: s
type(t), allocatable :: x
end type
type :: t
type(s), allocatable :: y
end type
end
gfortran trunk rejects this with:
type(t), allocatable :: x
1
Error: Derived type at (1) has not been previously defined and so cannot appear
in a derived type definition
IIUC this is valid in F08:
C440 (R436) If neither the POINTER nor the ALLOCATABLE attribute is specified,
the declaration-type-spec in the component-def-stmt shall specify an intrinsic
type or a previously defined derived type.
ifort 18 accepts it happily.
