Hello,
----------------------------------------
The file "testcase.pl" is shown below between the cut (-----) lines.
----------------------------------------
mypred(ATOM,LENGTH) :-
sub_atom(ATOM,_,2,AFTER_BEGIN,'/*'),
sub_atom(ATOM,_,2,AFTER_END,'*/'),
LENGTH is (AFTER_BEGIN - AFTER_END).
----------------------------------------
The following was executed from an xterm running bash.
This was on Fedora Core 4, but I also see this
same problem on SUSE 9.3 and Fedora 7. I've
tried lots of things but I think this is a bug. The problem
occurs when compiling a prolog source file. This is just
a simple predicate to show the problem. The same thing
happens in the code I am really developing. Please advise.
Further below is the gplcvWClub file in the /tmp directory.
[EMAIL PROTECTED] ceg]$ gprolog
GNU Prolog 1.3.0
By Daniel Diaz
Copyright (C) 1999-2007 Daniel Diaz
| ?- ['testcase.pl'].
compiling /home/daves/dock/projects/ceg/testcase.pl for byte code...
/home/daves/dock/projects/ceg/testcase.pl compiled, 4 lines read - 813
bytes written, 9 ms
uncaught exception: error(syntax_error('/tmp/gplcvWClub:13 (char:71)
expression expected'),read/2)
| ?-
% compiler: GNU Prolog 1.3.0 (Jan 4 2007)
% file : /home/daves/dock/projects/ceg/testcase.pl
% date : 6 25 2008
% time : 10:34:30
file_name('/home/daves/dock/projects/ceg/testcase.pl').
predicate(mypred/2,1,static,private,user,1).
clause(:-(mypred(A,B),','(sub_atom(A,C,2,D,/*),','(sub_atom(A,E,2,F,*/),is(B,-(D,F))))),[
allocate(4),
get_variable(y(0),0),
get_variable(y(1),1),
put_value(y(0),0),
put_void(1),
put_integer(2,2),
put_variable(y(2),3),
put_atom(/*,4),
call(sub_atom/5),
put_value(y(0),0),
put_void(1),
put_integer(2,2),
put_variable(y(3),3),
put_atom(*/,4),
call(sub_atom/5),
put_value(y(1),0),
put_structure((-)/2,1),
unify_local_value(y(2)),
unify_local_value(y(3)),
deallocate,
execute((is)/2)]).
Dave
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