I'm using the latest 'unstable' version under Ubuntu 8.04 and this bug
does not occur -- compilation fails because of the syntax error, same as
yours, but then it exits and goes back to the ?- prompt.
--Jasper
Dave Sworin wrote:
Hello,
It seems that if I put the following (bad) code in a file and try to
compile it, that gprolog goes into an infinite loop. I have only tried
this on Fedora Core 4. A predicate without arguments is fine,
but not with empty parentheses. This is fine with me. However, I am an
old C programmer and did this by accident in a much larger file. I'm
not sure this is a bug, but maybe you want to fix it. By-the-way, the
problem does not occur if a predicate does not preceed it in the file.
For example, without the predicate mypred/1 below, the bug does not
occur. Can you reproduce this problem also?
Dave
----------------------------------------------
mypred(ARG1) :-
ARG1 is 2 + 4.
test_case() :-
true.
----------------------------------------------
[EMAIL PROTECTED] infinite_loop_bug]$ gprolog
GNU Prolog 1.3.0
By Daniel Diaz
Copyright (C) 1999-2007 Daniel Diaz
| ?- ['testcase.pl'].
compiling /home/daves/.../testcase.pl for byte code...
/home/daves/.../testcase.pl:5:11: syntax error: expression expected
<== USER TYPED CONTROL-C HERE BECAUSE CPU METER WAS AT 100%
Prolog interruption (h for help) ? a
execution aborted
| ?-
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