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! { dg-do compile }

! { dg-options "-std=legacy" }

! Tests the patch for PRs 25084, 20852, 25085 and 25086, all of

! which involve assumed character length functions.

! Compiled from original PR testcases, which were all contributed

! by Joost VandeVondele  

!

! PR25084 - the error is not here but in any use of .IN.

! It is OK to define an assumed character length function

! in an interface but it cannot be invoked (5.1.1.5).

MODULE M1

 TYPE  SET

  INTEGER  CARD

 END  TYPE  SET

END MODULE M1

MODULE  INTEGER_SETS

 INTERFACE  OPERATOR  (.IN.)

  FUNCTION ELEMENT(X,A) ! { dg-error "cannot be assumed character length" }

     USE M1

     CHARACTER(LEN=*)      :: ELEMENT

     INTEGER, INTENT(IN)   ::  X

     TYPE(SET), INTENT(IN) ::   A

  END FUNCTION ELEMENT

 END  INTERFACE

END MODULE

! 5.1.1.5 of the Standard: A function name declared with an asterisk

! char-len-param shall not be array-valued, pointer-valued, recursive

! or pure

!

! PR20852

RECURSIVE FUNCTION TEST() ! { dg-error "cannot be recursive" }

 CHARACTER(LEN=*) :: TEST

 TEST = ""

END FUNCTION

!PR25085

FUNCTION F1()             ! { dg-error "cannot be array-valued" }

  CHARACTER(LEN=*), DIMENSION(10) :: F1

  F1 = ""

END FUNCTION F1

!PR25086

FUNCTION F2() result(f4)  ! { dg-error "cannot be pointer-valued" }

  CHARACTER(LEN=*), POINTER  :: f4

  f4 = ""

END FUNCTION F2

!PR?????

pure FUNCTION F3()        ! { dg-error "cannot be pure" }

  CHARACTER(LEN=*)  :: F3

  F3 = ""

END FUNCTION F3

function not_OK (ch)

  character(*) not_OK, ch ! OK in an external function

  not_OK = ch

end function not_OK

  use m1

  character(4) :: answer

  character(*), external :: not_OK

  integer :: i

  type (set) :: z

  interface

    function ext (i)

      character(*) :: ext

      integer :: i

    end function ext

  end interface

  answer = not_OK ("unOK") ! { dg-error "since it is not a dummy" }

END

! { dg-final { cleanup-modules "M1" } }