正如 IanH 所说,您需要一个可以为您处理的处理器(即编译器)。例如,如果你给它正确的标志,NAG 编译器会(免责声明 - 我为 NAG 工作)。我稍微修改了您的代码以使其可移植,并添加了一个驱动程序来显示这一点:
$ cat t.f90
module test
implicit none
Integer, Parameter :: wp = Selected_real_kind( 12, 70 )
contains
subroutine fun1(x)
real(wp), intent(in)::x
call fun2(x)
end subroutine
subroutine fun2(x)
real(wp) :: x
x = 10
end subroutine
end module
Program test_test
Use test
Implicit None
Real( wp ) :: x
x = 5.0_wp
Call fun1( x )
End Program test_test
$ nagfor t.f90
NAG Fortran Compiler Release 5.3.1 pre-release(904)
[NAG Fortran Compiler normal termination]
$ ./a.out
$ nagfor -C=all -C=undefined t.f90
NAG Fortran Compiler Release 5.3.1 pre-release(904)
[NAG Fortran Compiler normal termination]
$ ./a.out
Runtime Error: t.f90, line 15: Dummy argument X is associated with an expression - cannot assign
Program terminated by fatal error
Aborted (core dumped)
$
所以搜索标志,可能会有一些帮助 - 如果不是向提供编译器的人抱怨!