gcc/testsuite/gfortran.dg/value_5.f90

   1 ! { dg-do compile }
   2 ! Length of character dummy variable with VALUE attribute:
   3 ! - must be initialization expression or omitted
   4 ! - C interoperable: must be initialization expression of length one
   5 !   or omitted
   6 !
   7 ! Contributed by Tobias Burnus
   8 program x
   9   implicit none
  10   character(10) :: c1,c10
  11   c1  = 'H'
  12   c10 = 'Main'
  13   call foo1(c1)
  14   call foo2(c1)
  15   call foo3(c10)
  16   call foo4(c10)
  17   call bar1(c1)
  18   call bar2(c1)
  19   call bar3(c10)
  20   call bar4(c10)
  21
  22 contains
  23
  24   subroutine foo1(a)
  25     character :: a
  26     value :: a
  27   end subroutine foo1
  28
  29   subroutine foo2(a)
  30     character(1) :: a
  31     value :: a
  32   end subroutine foo2
  33
  34   subroutine foo3(a)
  35     character(10) :: a
  36     value :: a
  37   end subroutine foo3
  38
  39   subroutine foo4(a) ! { dg-error "VALUE attribute must have constant length" }
  40     character(*) :: a
  41     value :: a
  42   end subroutine foo4
  43
  44   subroutine bar1(a)
  45     use iso_c_binding, only: c_char
  46     character(kind=c_char) :: a
  47     value :: a
  48   end subroutine bar1
  49
  50   subroutine bar2(a)
  51     use iso_c_binding, only: c_char
  52     !character(kind=c_char,len=1) :: a
  53     character(1,kind=c_char) :: a
  54     value :: a
  55   end subroutine bar2
  56
  57   subroutine bar3(a) ! { dg-error "VALUE attribute must have length one" }
  58     use iso_c_binding, only: c_char
  59     character(kind=c_char,len=10) :: a
  60     value :: a
  61   end subroutine bar3
  62
  63   subroutine bar4(a) ! { dg-error "VALUE attribute must have constant length" }
  64     use iso_c_binding, only: c_char
  65     character(kind=c_char,len=*) :: a
  66     value :: a
  67   end subroutine bar4
  68 end program x