指针数组中的Fortran分段错误 [英] Fortran segmentation fault in pointer array
问题描述
我通过调用一个子例程来分配一个指针数组,并将这个数组传递给另一个子例程。
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。我应该如何解决这个问题?
非常感谢您的帮助。
模块hogehoge
隐式无
类型foo
真实,指针:: x(:)=> null()
结束类型foo
包含
子程序hogehoge_func(foox)
类型(foo),意图(inout):: foox
整数
分配(foox%x(2048))
do i = 1,2048
foox%x(i)=
end do
end子程序hogehoge_func
end模块hogehoge
!主程序---- --------------------------------------
程序测试
使用hogehoge
隐式无
类型(foo):: foox
调用hogehoge_func(foox)
print *,'in main program'
print *,foox %x(1:20)
调用hoge(foox%x)
结束程序测试
子程序hoge(foox)
使用hogehoge
隐含无
type(foo),intent(in):: foox
$ b $ print *,'in subroutine'
print *,foox%x(1)
结束子程序hoge
以下是输出。
<$ p主程序中的$ p>
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
子程序
分段错误
您需要更改主程序的最后一行:
call hoge(foox%x)
至
call hoge(foox)
如果您定义了例程 hoge
在一个模块中并导入它,然后编译器会选择这种类型的错误。
I have a segmentation fault problem in fortran. I allocate a pointer array by calling a subroutine and pass this array to another subroutine.
I compile this program by PGI fortran 9.0.2 on Linux machine. Here is my test program. How should I fix this problem?
Thank you very much for your help.
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
Here is the output.
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
You need to change the last line of the main program from:
call hoge(foox%x)
to
call hoge(foox)
If you had defined the routine hoge
in a module and imported that, then the compiler would pick up this type error.
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