https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92065
Bug ID: 92065
Summary: internal compiler error: in expand_expr_real_1
Product: gcc
Version: 9.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: rp83 at gmx dot com
Target Milestone: ---
The following minimal working example triggers an internal compiler error when
compiled with gfortran -c buggy.f95.
Compiler error appears with gfortran versions 9, 8, 7, 6, but not version 5.
See outputs below.
Tests run on Ubuntu 18.04.3 LTS, 4.15.0-65-generic x86_64.
=================================================
buggy.f95:
module buggy
implicit none
type :: bar
integer :: x
end type bar
type :: foo
integer :: n
contains
procedure :: fun1
procedure :: fun2
end type foo
contains
subroutine fun1(this, a)
implicit none
class(foo) :: this
class(bar), intent(in) :: a(this%n)
end subroutine fun1
integer function fun2(this, a)
implicit none
class(foo) :: this
class(bar), intent(in) :: a(this%n)
fun2 = a(1)%x
end function fun2
end module buggy
=================================================
COMPILER OUTPUTS
with GNU Fortran (Ubuntu 9.2.1-8ubuntu1~18.04.york0) 9.2.1 20190909:
$ gfortran-9 -c buggy.f95
during RTL pass: expand
buggy.f95:23:0:
23 | integer function fun2(this, a)
|
internal compiler error: in expand_expr_real_1, at expr.c:10012
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-9/README.Bugs> for instructions.
with GNU Fortran (Ubuntu 8.3.0-6ubuntu1~18.04.1) 8.3.0:
$ gfortran-8 -c buggy.f95
during RTL pass: expand
buggy.f95:23:0:
integer function fun2(this, a)
internal compiler error: in expand_expr_real_1, at expr.c:10047
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-8/README.Bugs> for instructions.
with GNU Fortran (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0:
$ gfortran-7 -c buggy.f95
buggy.f95:23:0:
integer function fun2(this, a)
internal compiler error: in expand_expr_real_1, at expr.c:9912
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-7/README.Bugs> for instructions.
with GNU Fortran (Ubuntu 6.5.0-2ubuntu1~18.04) 6.5.0 20181026:
$ gfortran-6 -c buggy.f95
buggy.f95:23:0:
integer function fun2(this, a)
internal compiler error: in expand_expr_real_1, at expr.c:9702
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-6/README.Bugs> for instructions.
with GNU Fortran (Ubuntu 5.5.0-12ubuntu1) 5.5.0 20171010: no compiler error.
