Path: utzoo!attcan!uunet!van-bc!ubc-cs!alberta!alberta!simon
From: simon@alberta.uucp (Simon Tortike)
Newsgroups: comp.lang.fortran
Subject: dbx, fortran, and vectors: Summary of responses
Message-ID: <1990Apr7.201318.28859@cs.UAlberta.CA>
Date: 7 Apr 90 20:13:18 GMT
Sender: news@cs.UAlberta.CA (News Administrator)
Reply-To: simon@alberta.UUCP (Simon Tortike)
Organization: Petroleum Engg, U of Alberta
Lines: 58

I recently posted a request for help on printing a specified range
of elements from a vector or array in the dbx debugger, on a
Sun 3/160 with SunOS (Unix) 4.0.3.  I received lots of responses: 
thanks to the following people

From: myrias!uunet!ukc.ac.uk!trh
From: rfinch@water.ca.gov
From: andy@jay.unspecified
From: khb@Sun.COM
From: Larry Weissman 5-2011 <rutgers!bioeng.washington.edu!larryw>
From: Scott Lamson <rutgers!sierra.crd.ge.com!lamson>

The responses fell into three categories.
a) Use the syntax displaying the contents of memory from a certain
location for a given length in a desired mode, e.g., rfinch@water.ca.com
suggested
&a[3] / 7 f

which means print the 7 values starting at the symbolic address of
a[3], in floating point format (dbx(1) p. 131).

b) Write a routine to print out the desired elements, and incorporate it
in the code to be debugged.  One needs a separate routine for each
type (real, integer, etc.).  This routine can then be called from within
dbx.  The only drawback is when the output is being redirected to a file,
one will not get to see the values immediately.

c) The third option is to dump dbx and use another debugger.
uunet!ukc.ac.uk!trh sent me information on the UPS debugger, part
of The Kent Software Tools. I quote from the brochure:

+ Graphical Debugging

UPS is a graphical debugger for C and FORTRAN programs.  It  is  both
a post-mortem  and  a run-time debugger.  UPS needs no typed commands;
all interaction is by pointing to and/or editing fields on  the
screen,  or selecting menu options.  For example, to display the value
of a variable the user simply points to its name within the source code
listing.

UPS can display all FORTRAN and  C  data  types,  including
structures, enums,  multidimensional arrays, pointers, etc.  Structure
variables can be expanded to show their contents, pointers can be
followed, all at the _________________________ - UNIX is a trademark of
AT&T Bell Laboratories  in  the  USA  and other countries.

The graphical debugger (ups) is available under both X and suntools on 
Sun3 and Sun386 and under X on Vax Stations.

***********************************************************************

Thanks for all the replies.
-------------------
W. Simon Tortike,                         | tel    : 403/492-3338
Dept of Mining, Metallurgical             | fax    : 403/492-7219
      and Petroleum Engineering,          | CDNnet : simon@cs.UAlberta.CA
University of Alberta,                    | uucp   : simon@alberta.uucp
Edmonton, AB, CANADA T6G 2G6.             |