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From: urjlew@ecsvax.UUCP
Newsgroups: comp.lang.fortran
Subject: Re: "Interesting" error interpretation
Message-ID: <3910@ecsvax.UUCP>
Date: Thu, 24-Sep-87 17:18:44 EDT
Article-I.D.: ecsvax.3910
Posted: Thu Sep 24 17:18:44 1987
Date-Received: Sat, 26-Sep-87 13:43:51 EDT
Organization: UNC Educational Computing Service
Lines: 72
Keywords: compiler diagnostics

I put the test problem through the FORTRAN compiler on our IBM
mainframe. The compiler is something like release 2.0 of version
1.4.1 of the VS FORTRAN compiler. There is a newer version Fortran
compiler release 2.2 of version 2.0, but we don't have it here.
I could access it at Cornell if there was great curiousity on the
net readers part. Anyways I did this just to see if the usually
maligned IBM did any better or worse than the highly touted DEC.
You will find below the highly censored output of the compile.
Note  Listing of source with internal statement mubers
      Error messages in line in the source listing
      Cross reference listing, which indicates that it also
         took num2 as undefined.
      a summarry of the errors in the module listed at the end
         of the module.
The errors messages are still not as brilliant as one might hope
for. i.e. not diagnosis of shifted statement.
--------------------------------------------------------------

     
               *....*...1.........2.........3.........4.........5.........6.....
Status: R


ISN        1         PROGRAM PRACT
ISN        2         REAL NUM1,NUM2,SUM
ISN        3         WRITE(*,*) 'Enter two numbers to be added to each other:'
ISN        4         READ(*,*) NUM1, NUM2
                   SUM = NUM1 + NUM2
***ERROR 1032(S)***      MISPLACED EQUAL SIGN IN EXPRESSION. IN AN ASSIGNMENT ST
                                 NAME OR VARIABLE NAME ONLY.
***ERROR 1417(S)***      AN I/O LIST ITEM IS INVALID. EITHER AN EXPRESSION WAS F
                                 WHILE PROCESSING THE ITEM. CHECK THAT THE ITEM
                                 STATEMENT FUNCTION NAME, OR AN INTRINSIC FUNCTI
ISN        5         WRITE(*,*)
ISN        6         WRITE(*,*) 'The sum of the two numbers is : ',SUM
ISN        7         STOP
ISN        8         END
     
    ..... some lines of compiler output deleted  ........
     
LEVEL 1.4.1 (MAY 1985)           VS FORTRAN          DATE: SEP 23, 1987    TIME:
SYMBOL CROSS REFERENCE DICTIONARY
 NAME   MODE   TAG    DECLARED REFERENCES
______  ____  ______  ________ __________
NUM1     R*4  T              2     4
NUM2     R*4  T              2    UNREFERENCED
NUM2M    I*4                       4
SUM      R*4  T              2     6
     
VARIABLES REFERENCED BUT NOT SET.  (* POSSIBLY SET AS ARGUMENT.)
   SUM
     
           ....storage map and more deleted ......
     
     
*** VS FORTRAN ERROR MESSAGES ***
IFX1032I   ARTH   12(S)     4    MISPLACED EQUAL SIGN IN EXPRESSION. IN AN ASSIG
                                 SUBSCRIPTED ARRAY NAME OR VARIABLE NAME ONLY.
IFX1417I   IOLS   12(S)     4    AN I/O LIST ITEM IS INVALID. EITHER AN EXPRESSI
                                 FOUND WHILE PROCESSING THE ITEM. CHECK THAT THE
                                 STATEMENT FUNCTION NAME, OR AN INTRINSIC FUNCTI
*STATISTICS*   SOURCE STATEMENTS = 8, PROGRAM SIZE = 562 BYTES, PROGRAM NAME = P
*STATISTICS* 2 DIAGNOSTICS GENERATED. HIGHEST SEVERITY CODE IS 12.
**PRACT** END OF COMPILATION 1 ******
     


--------------------------------------------------------
  Reply-To:  Rostyslaw Jarema Lewyckyj
             urjlew@ecsvax.UUCP ,  urjlew@tucc.bitnet
       or    urjlew@tucc.tucc.edu    (ARPA,SURA,NSF etc. internet)
       tel.  (919)-962-9107