指针数组中的Fortran分段错误

Question

我在fortran中有一个分段错误问题.我通过调用子程序来分配一个指针数组,并将该数组传递给另一个子程序.

我在Linux机器上用PGI fortran 9.0.2编译这个程序.这是我的测试程序.我该如何解决这个问题？

非常感谢您的帮助.

module hogehoge
  implicit none
  type foo
     real, pointer :: x(:)=>null()
  end type foo
contains
  subroutine hogehoge_func(foox)
    type(foo), intent(inout) :: foox
    integer i
    allocate(foox%x(2048))
    do i = 1, 2048
       foox%x(i)=i
    end do
  end subroutine hogehoge_func
end module hogehoge

!main program------------------------------------------
program test
  use hogehoge
  implicit none
  type(foo) :: foox
  call hogehoge_func(foox)

  print*, 'in main program'
  print*, foox%x(1:20)
  call hoge(foox%x)

end program test
subroutine hoge(foox)
  use hogehoge
  implicit none
  type(foo), intent(in) :: foox

  print*, 'in subroutine'
  print*, foox%x(1)

end subroutine hoge

这是输出.

 in main program
    1.000000        2.000000        3.000000        4.000000
    5.000000        6.000000        7.000000        8.000000
    9.000000        10.00000        11.00000        12.00000
    13.00000        14.00000        15.00000        16.00000
    17.00000        18.00000        19.00000        20.00000
 in subroutine
Segmentation fault

Answer 1

您需要更改主程序的最后一行:

call hoge(foox%x)

至

call hoge(foox)

如果您已hoge在模块中定义了例程并导入了该例程,那么编译器将获取此类型错误.