linux – Gfortran警告抱怨“Wmaybe -ininitialized”

我最近开发了一个相当长的Fortran代码.我正在使用的编译器是在Opensuse 13.1(64位)上的gfortran 4.8.1.但是当我使用-O2或-O3选项编译代码时,我收到很多关于“-Wmaybe -ininitialized”的警告.我设法将代码减少到最小的工作示例,如下所示.

在main.f90中

program main
    use modTest
    implicit none

    real(kind = 8),dimension(:,:),allocatable :: output
    real(kind = 8),:,allocatable :: input

    allocate(input(22,33,20),output(22,33))
    input = 2.0
    call test(input,output)

end program main

在test.f90中

module modTest
contains
subroutine test(inputValue,outValue)
    use modGlobal
    implicit none

    real(kind = 8),intent(in) :: inputValue
    real(kind = 8),intent(out) :: outValue
    integer :: nR,nX,nM,iM,ALLOCATESTATUS
    real,allocatable :: cosMPhi

    nR = size(inputValue,1)
    nX = size(inputValue,2)
    nM = size(inputValue,3) - 1
    allocate(cosMPhi(nR,0:nM),stat=ALLOCATESTATUS)
    call checkStatus(ALLOCATESTATUS)
    do iM = 0,nM
        cosMPhi(:,iM) = cos(iM * 1.0)
    end do
    outValue =  sum(inputValue * cosMPhi,3)

end subroutine
end module

在global.f90中

module modGlobal
contains
    subroutine checkStatus(stat)
        implicit none
        integer,intent(in) :: stat
        if(stat /= 0) then
           print *,"allocation failed"
           stop
        end if
   end subroutine
end module

使用gfortran -O2 -Wall test.f90 main.f90 -o run编译时,会出现以下警告：

test.f90: In function 'test':
test.f90:9:0: warning: 'cosmphi.dim[2].stride' may be used uninitialized in this function [-Wmaybe-uninitialized]
     real,allocatable :: cosMPhi
^
test.f90:9:0: warning: 'cosmphi.dim[1].ubound' may be used uninitialized in this function [-Wmaybe-uninitialized]
test.f90:9:0: warning: 'cosmphi.dim[1].stride' may be used uninitialized in this function [-Wmaybe-uninitialized]
test.f90:9:0: warning: 'cosmphi.dim[0].ubound' may be used uninitialized in this function [-Wmaybe-uninitialized]
test.f90:9:0: warning: 'cosmphi.offset' may be used uninitialized in this function [-Wmaybe-uninitialized]

虽然我试图谷歌这个问题一段时间,但我仍然没有找到一个好的答案.一些相关网站是：
(1)https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58410
(2)https://groups.google.com/forum/m/#!topic/comp.lang.fortran/RRYoulcSR1k
(3)GCC -Wuninitialized / -Wmaybe-uninitialized issues

我使用gfortran 4.8.5测试了示例代码,警告仍然存在.是因为我在代码中做错了吗？任何帮助将不胜感激.提前致谢！