DDD 3.3.1 is available					-*- text -*-
**********************

Release 3.3.1 of DDD, the Data Display Debugger, is now available.


What is DDD?
============

DDD is a graphical front-end for command-line debuggers such as GDB,
the Perl debugger, or the Python debugger.  Besides ``usual''
front-end features such as viewing source texts, DDD has become famous
through its interactive graphical data display, where data structures
are displayed as graphs.

More information is available at the GNU DDD homepage at

      http://www.gnu.org/software/ddd/



What's new in DDD?
==================

DDD 3.3.1
=========

DDD 3.3.1 brings a couple of minor bug fixes:

- The option to create new displays `left-to-right' is restored upon startup.
- Fortran struct members are accessed as `A%B' instead of `A.B'.
- Structure changes in plotted displays no longer crash DDD.
- You can specify the top-level geometry via `-geometry'.
- The `pydb' debugger has been fixed to work with recent Python releases.
- Ornamented Perl debugger prompts are handled correctly.
- DDD honors the TMPDIR environment variable for creating temporary files.
- `config.guess' and `config.sub' scripts have been updated.
- Minor compilation problems with GCC 2.7.2 have been fixed.
- Minor compilation problems with GCC 3.0 (prerelease) have been fixed.
- Minor compilation problems with Sun CC have been fixed.
- Minor potential problems with 64 bit pointers have been fixed.


DDD 3.3
=======

DDD 3.3 brings data themes, debugger interaction while the program is
running, support for JDB 1.2, and several bug fixes.


Data Themes
-----------

- DDD supports _data themes_ - modifiers that change the appearance of 
  program data.  Try `Data->Themes'.

- Data themes included with this release are:
  * Show specific expressions in a smaller font (useful for arrays).
  * Show display titles in a smaller font.
  * Suppress specific structure members or expressions.

- New data themes can be defined by users and installed at run-time.

- More themes are in preparation, such as rendering of C++ STL data structures.


Debuggers and Languages
-----------------------

- JDB as of JDK 1.2 is supported.

- GDB 5.0 is supported.

- You can use `ddd --wdb' to have DDD startup with WDB.  

- When choosing a debugger automatically, DDD will try `wdb' if `gdb'
  is not available.

- WindRiver's version of GDB (within the Tornado/vxworks environment)
  is supported.  See the DDD Reference, Section `WindRiver GDB' for
  details. (5)

- SGI DBX, Sun DBX, other DBXes as well as Compaq Ladebug can now
  attach to processes via DDD. (1)

- Parsing of GDB breakpoint information has been improved. (2)

- Parsing of Perl breakpoint information has been improved.

- Perl hash keys containing spaces are supported. (8)

- Using the separate execution window now improves parsing debugger
  output.  See the DDD documentation for the new `bufferGDBOutput'
  resource.


Examining Data
--------------

- New displays can be created left-to-right.  
  See `Edit => Preferences => Data => Placement'.  (6)

- Handling of Ladebug array output has been improved.  (7)

- Handling of multiple C++ base classes has been improved.

- Names that are keywords in some programming languages (such as
  `interface', `object', `class') should no longer impose problems when
  occurring in programs of other languages.

- Several memory leaks have been plugged. (1)


User Interface
--------------

- The default DDD font has been changed from `helvetica-bold' to
  `helvetica-medium', thus integrating better into KDE and GNOME
  environments.

- You can interact with the debugger while the program is running;
  DDD automatically interrupts and resumes debuggee execution.  See the
  `stopAndContinue' resource for details.

- Undo and Redo now apply on logical groups of commands.  If an action
  caused multiple commands, Undo will undo them with one click.

- Interrupts (Ctrl+C) from the controlling TTY can be issued multiple times.

- With LessTif, the source window no longer scrolls around when
  setting or deleting breakpoints.

- With LessTif, combo boxes (drop-down text boxes) no longer shrink.

- With LessTif, Text selection works better.

- With LessTif, typing in the debugger console works better.

- With LessTif, switching the register set works.

- Drag and Drop of breakpoints in the machine code is supported.

- Names of debuggee files and directories may contain spaces.

- Spin boxes (used to step values) have been slightly improved.

- Forwarding of keyboard events from the source window into the
  debugger console is now optional.  See the `consoleHasFocus' resource. (10)


Printing
--------

- PostScript printing includes background colors (e.g. changed values)



Installation
------------

- PLEASE NOTE: Several installation details have changed.  Be sure to
  read the `INSTALL' file for new installation instructions.

- Several DDD resources (such as the application defaults) now reside
  in separate files, reducing DDD executable size and memory footprint 
  by about 300k.

- To run DDD from the build directory (i.e. before installing), you
  must set the DDD_HOME and XUSERFILESEARCH environment variables.
  See the `INSTALL' file for details.

- The configure `--enable-rpath' option allows you to specify a path
  to be searched for dynamic libraries at run-time.

- DDD Makefiles are now GNU standards-compliant and generated by automake.

- DDD Makefiles use libtool for generic shared library support.

- A bad dependency on $(SHELL) in the Makefile has been fixed.  This
  caused unnecessary calls of flex and bison in the distribution. (9)

- A bad wildcard use in the Makefile has been fixed. (3)

- A compilation problem in `PannedGE.C' with some GCC variants has been fixed.

- DDD now compiles cleanly even with `gcc -Wwrite-strings'.  This
  avoids several warnings/errors on C++ compilers other than GCC. (1)

- The `--configuration' option now gives more information about the
  compiler being used to compile DDD. (1)

- ddd.texi rules in the Makefile have been fixed. (4)

- The release includes the `libiberty' and `readline' packages as of GDB 5.0.


License
-------

- All remaining parts of DDD that used the GNU Library Public General
  License (LGPL) have been changed to use the GNU General Public 
  License (GPL) instead.

- The DDD Manual is released under the new GNU Free Documentation License.


Acknowledgments
---------------

Thanks to: 
    (1) Arnaud Desitter <arnaud@nag.co.uk>
    (2) Hiro Sugawara <hiro@lynx.com>
    (3) Yann Dirson <Yann.Dirson@france.sun.com>
    (4) H. Nanosecond <aldomel@ix.netcom.com>
    (5) Gary Cliff <gary.cliff@cdott.com>
    (6) Danny Van Elsen <Danny_Van_Elsen@village.uunet.be>
    (7) Philippe Midol-Monnet <Philippe.MIDOL-MONNET@airbus.aeromatra.com>
    (8) Felipe Rivera <felipe@informador.com.mx>
    (9) Thomas Anders <anders@hmi.de>
   (10) Colin <cbyh@yahoo.com>



Where can you get it?  How can you compile it?
==============================================

The ddd-3.3.1.tar.gz distribution file has been placed on `ftp.gnu.org'
in `gnu/ddd'.

DDD 3.3.1 requires 
- LessTif 0.90 or later, available from `http://www.lesstif.org/' 
  (or any other M*tif library)
- GCC 2.95 or later (or any other C++ compiler)

The most recent (not necessarily tested) snapshots of DDD will be
placed on `alpha.gnu.org' in `gnu/ddd'.


Where do I send bug reports?
============================

Bug reports can be sent to <bug-ddd@gnu.org>.


Enjoy!

The DDD maintainers <ddd@gnu.org>



Obtaining GNU Software
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