https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66929
--- Comment #3 from Mikael Morin <mikael at gcc dot gnu.org> ---
Reduced test:
module iso_varying_string
type, public :: varying_string
character(LEN=1), dimension(:), allocatable :: chars
end type varying_string
interface operator(/=)
module procedure op_ne_VS_CH
end interface operator (/=)
interface trim
module procedure trim_
end interface
contains
elemental function op_ne_VS_CH (string_a, string_b) result (op_ne)
type(varying_string), intent(in) :: string_a
character(LEN=*), intent(in) :: string_b
logical :: op_ne
end function op_ne_VS_CH
elemental function trim_ (string) result (trim_string)
type(varying_string), intent(in) :: string
type(varying_string) :: trim_string
end function trim_
end module iso_varying_string
module syntax_rules
use iso_varying_string, string_t => varying_string
contains
subroutine set_rule_type_and_key ()
type(string_t) :: key
if (trim (key) /= "") then
end if
end subroutine set_rule_type_and_key
end module syntax_rules
