Hi,
swiprolog on Deibian ppc, current versions, generates the
following error message when triggering the trace:
Sergio
---
Welcome to SWI-Prolog (Version 3.3.0)
Copyright (c) 1993-1999 University of Amsterdam. All rights reserved.
For help, use ?- help(Topic). or ?- apropos(Word).
1 ?- trace.
ERROR: trace/0: Caught signal 11 (segv)
[PROLOG SYSTEM ERROR:
Recursively received fatal signal 11
PROLOG STACK:
#