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! { dg-do compile }

! { dg-options "-std=f95" }

!

! PR20901 - Checks resolution of types in EQUIVALENCE statement when

! f95 standard is imposed.

!

! Contributed by Paul Thomas 

!

  type   :: numeric_type

    sequence

    integer      :: i

    real         :: x

    real(kind=8) :: d

    complex      :: z

    logical      :: l

  end type numeric_type

  type (numeric_type) :: my_num, thy_num

  type   :: numeric_type2

    sequence

    integer      :: i

    real         :: x

    real(kind=8) :: d

    complex      :: z

    logical      :: l

  end type numeric_type2

  type (numeric_type2) :: his_num

  type       :: char_type

    sequence

    character(4) :: ch

    character(4) :: cha (6)

  end type char_type

  type (char_type) ::  my_char

  type       :: mixed_type

    sequence

    integer     :: i(4)

    character(4) :: cha (6)

  end type mixed_type

  type (mixed_type) ::  my_mixed, thy_mixed

  character(len=4) :: ch

  integer         :: num

  integer(kind=8) :: non_def

  complex(kind=8) :: my_z, thy_z

! Permitted: character with character sequence

!            numeric with numeric sequence

!            numeric sequence with numeric sequence

!            non-default of same type

!            mixed sequences of same type

  equivalence (ch, my_char)

  equivalence (num, my_num)

  equivalence (my_num, his_num, thy_num)

  equivalence (my_z, thy_z)

  equivalence (my_mixed, thy_mixed)

! Not permitted by the standard - OK with -std=gnu

  equivalence (my_mixed, my_num) ! { dg-error "with mixed components in EQUIVALENCE" }

  equivalence (my_z, num) ! { dg-error "Non-default type object or sequence" }

  equivalence (my_char, my_num) ! { dg-error "in default CHARACTER EQUIVALENCE" }

  equivalence (ch, my_num) ! { dg-error "in default CHARACTER EQUIVALENCE" }

  equivalence (my_num, ch) ! { dg-error "in default NUMERIC EQUIVALENCE" }

  equivalence (num, my_char) ! { dg-error "in default NUMERIC EQUIVALENCE" }

  equivalence (my_char, num) ! { dg-error "in default CHARACTER EQUIVALENCE" }

  equivalence (non_def, ch) ! { dg-error "Non-default type object or sequence" }

  equivalence (my_z, ch) ! { dg-error "Non-default type object or sequence" }

  equivalence (my_z, num) ! { dg-error "Non-default type object or sequence" }

 END