Changes in YAP-5.1

Yap-5.1.0:

• FIXED: always walk through modules in the same order when waking up variables (otherwise, breaks CLP(QR)).
• NEW: SWI-like yap_flag(float_format,_).
• FIXED: change C-interface to use new interface.
• FIXED: << and >> should handle overflows.
• FIXED: mod and rem now implement ISO semantics (hopefully).
• FIXED: change implementation of bigints to be more like GMP style.
• FIXED: handle assert/retracts and gprof overhead right.
• FIXED: indexing code was not setting up properly registers on longjmps.
• FIXED: use RISC architecture on MacOsX (__POWERPC__ + _POWER).
• FIXED: init system predicates should generate full static clause.
• NEW: tabling does not conflit with depth limit (Trevor Walker).
• NEW: make scanner restartable on seekable files (Nuno Fonseca).
• NEW: improve error discovery within scanner (Jude Shavlik).
• NEW: change event profiler to do profiling online and off-line.
• NEW: routine to find clause/pred
• NEW: always end clauses with Ystop START, so that we can refer back to the clause's beginning.
• NEW: always have a pointer to Pred in clauses, so that we can find current predicate.
• NEW: heapgc should now be concurrent when using threads.
• FIXED: heapgc wo tags can handle trail overflows right.
• NEW: heapgc wo tags does not write on the collected areas during marking.
• FIXED: dif/2 might get into trouble restoring assignments to attributes.
• NEW: Yap_DebugPlWrite and Yap_DebugErrorPutc for those debugging moments.
• FIXED: get rid of dead internal variable MutableList.
• NEW: write_depth/3 for very large compound terms.
• FIXED: new bug in garbage collection.
• FIXED: overflow handling in DB/AttVars was resetting old var, and wasn't resetting trail.
• FIXED: when rebuilding DB term with attvars, set global var to point to attvar.
• NEW: add school CLP(BN) example.
• NEW: add sc CLP(BN) example.
• FIXED: make exception port more like a true port.
• FIXED: don't run ^ in setof if there are no excess variables.
• FIXED: prolog_load_context(directory) relied on dead code.
• FIXED: some small beautifications for system/1, getcwd/1, sh/1, rename/2.
• NEW: operating_system_error.
• FIXED: Restore could not recover DL_MALLOC info and was not recovering DBTerms correctly.
• FIXED: with locking field, AtomNil and friends might not be aligned, and would be confused with int.
• FIXED: variables should always be reset when doing trail expansion from the parser, even if there is no shifting (obs Trevor Walker).
• FIXED: growglobal with realloc was broken.
• FIXED: with threads, self-deadlocking in new array codes.
• FIXED: in tabling, use malloc when AllocCodeSpace fails.
• FIXED: in tabling don't look inside cp_ap == NULL and fix recent bug in walking dependency frames.
• FIXED: with tabling ASP sometimes was miscalculated, causing trouble with stack shifter (obs Kostis Sagonas).
• FIXED: ~D should print bignums (obs Jude Shavlik).
• FIXED: format's ~d and ~D were broken (obs Jude Shavlik).
• FIXED: profiler should not talk about hidden predicates or idb entries.
• FIXED: recentg change in setof could bind argument (obs Jude Shavlik).
• FIXED: EOF (-1) at debugger prompt would generate exception (obs Jude Shavlik).
• FIXED: ^C was very broken: break was not accepted, and debug, trace and statistics did not work at all (obs Jude Shavlik).
• FIXED: format_has_tabs could miss tab signs (obs Jude Shavlik).
• FIXED: plug holes in memory allocation from scanner (obs Mark Goadrich).
• FIXED: instrument memory allocation when using system malloc.
• FIXED: adjust_cp_hbs was readjusting consumer choice-points (it can only adjust hb once) (obs Remko Troncon).
• FIXED: try to make GC trace message "marked N vars" intelligible.
• FIXED: garbage collection of mabindings was broken with tabling (obs Remko Troncon).
• FIXED: did not initialise tabling variables (obs Remko Troncon).
• FIXED: should have meta-predicate definitions for calls and discontiguous.
• FIXED: have discontiguous as a builtin, not just as a declaration (obs Jude Shavlik).
• FIXED: if first argument was unbound, comparisons might be called with second argument undereferenced!!
• FIXED: strip ^ before doing execute in setof or bagof.
• FIXED: use CONST declarations in interface (thanks to Roberto Bagnara).
• FIXED: absmi should consult PREG, not P (obs Remko Troncon).
• FIXED: bad init in tabling code.
• FIXED: YAP_MkBigIntTerm was broken (obs Roberto Bagnara).
• NEW: update documentation to support new CLP(R) and CHR packages.
• FIXED: regression in clpbn/utils.yap.
• NEW: put_attrs/2.
• FIXED: don't install CLP unless coroutining && rational trees are active.
• FIXED: syntax error in ypp.yap (obs Paulo Moura).
• FIXED: save/restore should be as usual if using YAP allocation.
• FIXED: save/restore FZ regs.
• FIXED: $loop_stream could be defined early in boot process.
• NEW: make rational trees default.
• NEW: make enable-max-memory default.
• FIXED: allow people to disable indexing (obs Ricardo Lopes).
• FIXED: make undefined exception more ISO like (obs Paulo Moura).
• FIXED: add missing dependency in chr's Makefile.in.
• FIXED: fix corruption in ypp.yap.
• FIXED: ~@ makes format a meta-predicate.
• FIXED: format should do immediate exit on exception (from Prolog call).
• FIXED: make format reentrant and thread-safe (format may call itself).
• FIXED: don't complain if a module is loading a reexported predicate and the original predicate.
• FIXED: change a few defaults for SWI compatibility.
• FIXED: library prandom was broken (obs Nuno Fonseca).
• NEW: add max_tagged_integer and min_tagged_inter prolog_flags.
• NEW: add ~@ option to format.
• NEW: memberchk/2 is like builtin in SWI emulation lib.
• NEW: SWI like prolog_source_location/2
• FIXED: $loop_stream usage was broken. Fix $fetch_stream_alias to be bidirectional.
• FIXED: allow nb_set followed by b_set, bheakkkk! The other way round is still not allowed.
• NEW: from SWI maplist/2, maplist/3, maplist/4.
• NEW: call/2, call/3, call/4.
• FIXED: disable mutables in SWI mode.
• FIXED: safe C-preds should always use P when calling garbage collector, aarrggh :-(, CP use found in GetTermFromArray.
• NEW: SWI-like ord_empty/1 and ord_memberchk/2 in library(ordsets).
• FIXED: safe call_c should check for signals before calling a built-in.
• NEW: -p option allows setting path from command line.
• FIXED: during grow, heap references should not be followed from trail.
• FIXED: \= was not resetting wakeups correctly.
• FIXED: copy_term was broken if attrs were an unbound variable.
• FIXED: during garbage collection, heap references should be copied to trail, and that's it.
• FIXED: excessive backtracking in multifile declaration.
• NEW: allow style_check(singleton) and style_check(-singleton).
• NEW: SWI module now makes atom_concat/{2,3} behave like atomic_concat/{2,3}.
• NEW: add SWI-like copy_term_nat/2.
• NEW: add SWI-like get_time and convert_time, but using integers, not floats.
• NEW: add SWI-like working_directory/2 and chdir/2.
• NEW: add append/3 and member/2 to SWI module.
• FIXED: use bootstrap/1 to load up system.
• FIXED: use_module/3 did not get info on loaded_module.
• NEW: use_load_files as main file loading option.
• FIXED: broken do_print_message for defined_elsewhere.
• FIXED: debugger option.
• FIXED: trace through undefined predicates correctly.
• FIXED: WIN32 missing include files (untested)
• FIXED: -L trouble (my thanks to Takeyuchi Shiramoto-san)!
• FIXED: debugging of backtrable user-C preds would core dump.
• FIXED: redeclaring a C-predicate as Prolog core dumps.
• FIXED: badly protected YapInterface.h.
• FIXED: break/0 was failing at exit.
• FIXED: YAP_cut_fail and YAP_cut_succeed were different from manual.
• FIXED: tracing through data-bases could core dump.
• FIXED: cut could break on very large computations.
• FIXED: first pass at BigNum issues (obs Roberto Bagnara).
• FIXED: debugger could get go awol after fail port.
• FIXED: weird message on wrong debugger option.
• FIXED: cases where restore/1 could break.
• NEW: SWI predicates now update prolog module
• NEW: port of Leslie's CLP(R) system.
• NEW: generations in garbage collector.
• SPEEDUP: optimise some garbage collector code.