FIX: F1001: ctypes.c, Line 467; LEN_TRIM on PARAMETER String (74219)

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The following program will generate the internal compiler error:

      character*8 a
      parameter (a='abcdef  ')
      print*,len_trim(a)
      end
				

Since the length of a PARAMETER character is fixed, and therefore, the last nonblank character is known when the program is compiled, use of the LEN_TRIM function on PARAMETER character strings can be avoided by using this known constant value, or by using another PARAMETER to store this value.

It is also possible to pass the PARAMETER as an argument to a function and to call the LEN_TRIM intrinsic function from within this user defined function without generating any errors. The following program illustrates this solution:

      character*8 a
      parameter (a='abcdef  ')
      integer*4 trim
      print*, trim(a)
      end

      integer*4 function trim(a) ! User-defined substitute
                                 ! for LEN_TRIM
      character*(*) a
      trim = len_trim(a)
      end