Ann: SWI-Prolog 6.3.19

Hi,

I have uploaded SWI-Prolog 6.3.19.  Mostly maintenance issues.  Short 
summary:

  - Crash in argument-stack overflow handling.  Crashes running code 
with terms
    that are very deeply nested on any but the last argument.

  - Portability changes for SunOS 5.11 (gcc 4.8) and Win64 (long/pointer 
issues).
    The build-script now extracts `dangerous' warnings from the 
logfiles, so they
    are less easy to ignore.  See http://www.swi-prolog.org/build/SunOS.txt.
    A lot of this was contributed by Keri Harris.  Thanks.

  - Various enhancements to Prolog<->JSON conversion (see below).

  - Next step in PostScript in xpce generation error (sorry Jochem).

  - Better support for quasi quotations in the development tools.

  - Fixed possible deadlock when using processes using process_create/3 as
    filters (i.e., connection both stdin and stdout from Prolog, sending
    data to stdin, close and read output from stdout).  The fix is 100%
    for systems providing pipe2() and significantly reduces the window
    for systems lacking this call (e.g., MacOS).

	Enjoy --- Jan


=========================================
SWI-Prolog Changelog since version 6.3.18
=========================================

  * DOC: Format/writef updates

  * FIXED: Initialization of the argument stack.  May cause crashes on
    very deeply nested terms.  Daniel Diaz.

  * CLEANUP: use GCC's __attribute__((warn_unused_result)) for
    PL_get_string_chars()

  * ADDED: Support for demand loading quasi quotations for
    cross-referencing and coloring.

  * FIXED: Sandbox handling for quasi quotations (calling wrong module)

  * ADDED: predicate_property/2: property quasi_quotation_syntax

  * BUILD: Use $(MAKE) -C instead of (cd && $(MAKE)) to make sure we
    propagate the exit status properly.

  * PORT: Also include <fcntl.h> to get the FD_CLOEXEC flag on SunOS.

  * CLEANUP: Unused function if O_DEBUG is not active.

  * PORT: Avoid wcsdup() on SunOS due to missing prototype

  * PORT: Avoid including <math.h> before pl-incl.h because this results in
    inconsistent settings for _FILE_OFFSET_BITS on SunOS (and maybe others).

  * PORT: Terrible hack to work around SunOS 5.11/gcc signbit issues.

  * FIXED: Type error when dumping a debugging stacktrace.

  * BUILD: Use $(MAKE) rather than make.

  * PORT: Get rid of our own abs() macro in favor of C99 functions.

  * BUILD: parse build log for GCC warnings that may indicate runtime
    failures

  * FIXED: Possibility that the claim "Therefore we keep signalling every
    128 new atoms. Sooner or later some actually active thread will pick up
    the request and process it." in pl-atom.c is never true.  Wouter Beek.
    Relaxed a test a bit because the current algorithm only guarantees
    an atom GC between margin and margin+128.



============
Package clib
============

  * FIXED: Ensure proper inheritance of file descriptors when using
    concurrent process_create/3.  Jacco van Ossenbruggen.

  * CLEANUP: Make sure we catch EINTR when calling close() in
    process_create/3

  * FIXED: process_create/3 may close wrong stream in case of errors.

  * PORT: create_process/3 check relied on non-portable behaviour of tr(1)

  * PORT: Include signal.h to get the prototype for kill()

============
Package http
============

  * FIXED: Disambiguating JSON->Prolog translation.

  * MODIFIED: Make json_to_prolog/2 ignore fields in the json that are
    not specified in the json_object/1 declaration.  If multiple rules
    now apply, the one producing the Prolog term with the highest arity
    is selected.

  * ADDED: library(http/json_convert) - disjunction of types using
    (TypeA|TypeB) - null `type' to demand the key is not present -
    Handle specified defaults as optional fields in the JSON input.

  * FIXED: library(http/json_convert): properly handle types such as
    list(atom).

  * DOC: Old style quasi quotations

  * DOC: Enhanced documentation of aggregate option.  Anne Ogborn.

===========
Package nlp
===========

  * PORT: Cleanup wcsdup() issues.

============
Package odbc
============

  * ENHANCED: return domain_error on invalid ODBC findall/2 input

  * ENHANCED: support widechar+64 bit types in ODBC findall/2

  * FIXED: possible crash when freeing compiled findall/2

  * FIXED: possible crash when using findall/2 option in odbc_query/4

=============
Package pldoc
=============

  * FIXED: Object links to stable section identifiers

==============
Package semweb
==============

  * FIXED: rdf_save_canonical_turtle/2 used user prefixes.

  * FIXED: TriG parser: handle the optional = in <graph> "="? "{"

  * FIXED: Possible constant computation overflow (32-bit hardware)

  * PORT: Another missing prototype

  * PORT: Avoid wscdup warnings on SunOS

============
Package sgml
============

  * FIXED: Make parser understand html4 as alias for html for the dialect
    option.  Jacco van Ossenbruggen.

  * FIXED: Bug#110: library(sgml_write): printing numeric attribute values.

=============
Package space
=============

  * FIXED: Typo; didn't compile anymore

  * CLEANUP: Avoid warning.

===========
Package ssl
===========

  * MODIFIED: ssl_context/3: Throw an exception if ssl_config() fails

===============
Package windows
===============

  * ENHANCED: support QWORD registry types

  * FIXED: possible access to freed memory

  * FIXED: check key values when creating registry keys

  * FIXED: handle exception when setting registry keys

  * CLEANUP: silence GCC warnings about safe int <-> pointer casts

============
Package xpce
============

  * CLEANUP: Use strncmp().  This also fixes a crash when compiling using
    GCC 4.8.1 on MacOSX.  Looks like a GCC compiler error, but one should
    be careful with saying that ...

  * FIXED: text_buffer->delete if start position > size.

  * FIXED: send CTRL+C to child process using correct PGID

  * CLEANUP: use correct WNDPROC type for callback functions

  * FIXED: Sync stream.h between xpce and Prolog.  Fixed Ssize() in xpce
    on big endian machines.

  * CLEANUP: Warnings for printing XPCE integers on 32-bit platforms

  * CLEANUP: fix aliasing issue

  * CLEANUP: Methods cannot be saved anomore anyway.  Do not pretend
    they can.

  * CLEANUP: Lots of Win64 types

  * CLEANUP: types and complete change in string structure

  * CLEANUP: Handle string header with a union rather than casts

  * FIXED: PostScript generation with negative floats.  Jochem Liem.
    Broken in locale fix (177f0b8c201740ae9499f8bfd790a013d6a28050).