[Patch, fortran] PR28923, PR28959 and PR28947 - essential fixes for the 4.2.0 release

[Paul Thomas]

Steve,

>>PPS If people are sufficiently exercised by it for the release, I also 
>>have a patch for PR28890 that could be fielded very quickly.
>>
>
>Send me the patch.
>
>
With the enclosed patch, this works and nothing is broken:

character(*) function charrext (n)
  character(26) :: alpha ="abcdefghijklmnopqrstuvwxyz"
  charrext = alpha (1:n)
end function charrext

  character(26), external :: charrext
  interface
    integer*4 function test(charr, i)
     character(*), external :: charr
     integer :: i
    end function test
  end interface

  do j = 1 , 26
    m = test (charrext, j)
    m = ctest (charrext, 27 - j)
  end do
contains
  integer*4 function ctest(charr, i)
    character(*) :: charr
    integer :: i
    print *, charr(i)
    ctest = 1
  end function ctest
end

integer*4 function test(charr, i)
  character(*) :: charr
  integer :: i
  print *, charr(i)
  test = 1

end function test

It can be turned into a patch very quickly!

Paul



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