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! { dg-do run }

! { dg-additional-sources bind_c_coms_driver.c }

! { dg-options "-w" }

! the -w option is to prevent the warning about long long ints

module bind_c_coms

  use, intrinsic :: iso_c_binding

  implicit none

  common /COM/ R, S

  real(c_double) :: r

  real(c_double) :: t

  real(c_double) :: s

  bind(c) :: /COM/, /SINGLE/, /MYCOM/

  common /SINGLE/ T

  common /MYCOM/ LONG_INTS

  integer(c_long) :: LONG_INTS

  common /MYCOM2/ LONG_LONG_INTS

  integer(c_long_long) :: long_long_ints

  bind(c) :: /mycom2/

  common /com2/ i, j

  integer(c_int) :: i, j

  bind(c, name="f03_com2") /com2/

  common /com3/ m, n

  integer(c_int) :: m, n

  bind(c, name="") /com3/

contains

  subroutine test_coms() bind(c)

    r = r + .1d0;

    s = s + .1d0;

    t = t + .1d0;

    long_ints = long_ints + 1

    long_long_ints = long_long_ints + 1

    i = i + 1

    j = j + 1

    m = 1

    n = 1

  end subroutine test_coms

end module bind_c_coms

module bind_c_coms_2

  use, intrinsic :: iso_c_binding, only: c_int

  common /com3/ m, n

  integer(c_int) :: m, n

  bind(c, name="") /com3/

end module bind_c_coms_2

! { dg-final { cleanup-modules "bind_c_coms bind_c_coms_2" } }