gcc/testsuite/gfortran.dg/equiv_constraint_2.f90

   1 ! { dg-do compile }
   2 ! { dg-options "-std=f95" }
   3 !
   4 ! PR20901 - Checks resolution of types in EQUIVALENCE statement when
   5 ! f95 standard is imposed.
   6 !
   7 ! Contributed by Paul Thomas <pault@gcc.gnu.org>
   8 !
   9   type   :: numeric_type
  10     sequence
  11     integer      :: i
  12     real         :: x
  13     real(kind=8) :: d
  14     complex      :: z
  15     logical      :: l
  16   end type numeric_type
  17
  18   type (numeric_type) :: my_num, thy_num
  19
  20   type   :: numeric_type2
  21     sequence
  22     integer      :: i
  23     real         :: x
  24     real(kind=8) :: d
  25     complex      :: z
  26     logical      :: l
  27   end type numeric_type2
  28
  29   type (numeric_type2) :: his_num
  30
  31   type       :: char_type
  32     sequence
  33     character(4) :: ch
  34     character(4) :: cha (6)
  35   end type char_type
  36
  37   type (char_type) ::  my_char
  38
  39   type       :: mixed_type
  40     sequence
  41     integer     :: i(4)
  42     character(4) :: cha (6)
  43   end type mixed_type
  44
  45   type (mixed_type) ::  my_mixed, thy_mixed
  46
  47   character(len=4) :: ch
  48   integer         :: num
  49   integer(kind=8) :: non_def
  50   complex(kind=8) :: my_z, thy_z
  51
  52 ! Permitted: character with character sequence
  53 !            numeric with numeric sequence
  54 !            numeric sequence with numeric sequence
  55 !            non-default of same type
  56 !            mixed sequences of same type
  57   equivalence (ch, my_char)
  58   equivalence (num, my_num)
  59   equivalence (my_num, his_num, thy_num)
  60   equivalence (my_z, thy_z)
  61   equivalence (my_mixed, thy_mixed)
  62
  63 ! Not permitted by the standard - OK with -std=gnu
  64   equivalence (my_mixed, my_num) ! { dg-error "with mixed components in EQUIVALENCE" }
  65   equivalence (my_z, num) ! { dg-error "Non-default type object or sequence" }
  66   equivalence (my_char, my_num) ! { dg-error "in default CHARACTER EQUIVALENCE" }
  67   equivalence (ch, my_num) ! { dg-error "in default CHARACTER EQUIVALENCE" }
  68   equivalence (my_num, ch) ! { dg-error "in default NUMERIC EQUIVALENCE" }
  69   equivalence (num, my_char) ! { dg-error "in default NUMERIC EQUIVALENCE" }
  70   equivalence (my_char, num) ! { dg-error "in default CHARACTER EQUIVALENCE" }
  71   equivalence (non_def, ch) ! { dg-error "Non-default type object or sequence" }
  72   equivalence (my_z, ch) ! { dg-error "Non-default type object or sequence" }
  73   equivalence (my_z, num) ! { dg-error "Non-default type object or sequence" }
  74  END