I was trying to learn DDD and I installed it using brew on my mac. this is the message I got:
Warning: locale not supported by Xlib, locale set to C
Creating "/Users/foadsf/.ddd/"...
Creating "/Users/foadsf/.ddd/"...done.
Creating "/Users/foadsf/.ddd/sessions/"...
Creating "/Users/foadsf/.ddd/sessions/"...done.
Creating "/Users/foadsf/.ddd/themes/"...
Creating "/Users/foadsf/.ddd/themes/"...done.
Error: Unresolved inheritance operation
Xt error (Unresolved inheritance operation).
Oops! You have found a bug in DDD.
If you can reproduce this bug, please send a bug report
DDD 3.3.12 (i386-apple-darwin15.5.0) gets Xt error
To enable us to fix the bug, you should include the following information:
* What you were doing to get this message. Report all the facts.
* The contents of the `~/.ddd/log' file as generated by this session.
Please read also the section "Reporting Bugs" in the DDD manual.
We thank you for your support.
ddd: Cannot save options
log