aboutsummaryrefslogblamecommitdiffstats
path: root/lib/tools/doc/src/notes.xml
blob: e24e1c59778cb43158fd73f3b3710d82b25034f1 (plain) (tree)
1
2
3
4
5
6
7
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863





                                        
                                        







                                                                         
 



                                                                            
 










                                                                           














































































                                                                      





































                                                                     


































































                                                                      
















































                                                                    



















                                                                















                                                                  





































































                                                                     












                                                                 

































                                                                 

          


























































































































































































































































































































































































































































                                                                          
<?xml version="1.0" encoding="latin1" ?>
<!DOCTYPE chapter SYSTEM "chapter.dtd">

<chapter>
  <header>
    <copyright>
      <year>2004</year><year>2011</year>
      <holder>Ericsson AB. All Rights Reserved.</holder>
    </copyright>
    <legalnotice>
      The contents of this file are subject to the Erlang Public License,
      Version 1.1, (the "License"); you may not use this file except in
      compliance with the License. You should have received a copy of the
      Erlang Public License along with this software. If not, it can be
      retrieved online at http://www.erlang.org/.

      Software distributed under the License is distributed on an "AS IS"
      basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
      the License for the specific language governing rights and limitations
      under the License.

    </legalnotice>

    <title>Tools Release Notes</title>
    <prepared></prepared>
    <docno></docno>
    <date></date>
    <rev></rev>
    <file>notes.xml</file>
  </header>
  <p>This document describes the changes made to the Tools application.</p>

<section><title>Tools 2.6.6.6</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p>Update system profiling principles to reflect eprof
	    performance improvements.</p>
          <p>
	    Own Id: OTP-9656</p>
        </item>
        <item>
          <p>
	    [cover] fix leftover {'DOWN', ..} msg in callers queue</p>
          <p>
	    After stopping cover with cover:stop() there could still
	    be a {'DOWN',...} leftover message in the calling
	    process's message queue. This unexpected leftover could
	    be eliminated if erlang:demonitor/2 with option flush
	    would be used in certain points</p>
          <p>
	    Own Id: OTP-9694</p>
        </item>
        <item>
          <p>
	    Add deps as erlang-flymake include directory.</p>
          <p>
	    Update erlang-flymake to recognize the "deps" folder as
	    an include directory. This makes erlang-flymake
	    compatible with the rebar dependency management tool's
	    default folder structure, which puts included
	    dependencies in "deps".(Thanks to Kevin Albrecht)</p>
          <p>
	    Own Id: OTP-9791</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p>Variables are now now allowed in '<c>fun M:F/A</c>' as
	    suggested by Richard O'Keefe in EEP-23.</p>
	    <p>The representation of '<c>fun M:F/A</c>' in the
	    abstract format has been changed in an incompatible way.
	    Tools that directly read or manipulate the abstract
	    format (such as parse transforms) may need to be updated.
	    The compiler can handle both the new and the old format
	    (i.e. extracting the abstract format from a pre-R15 BEAM
	    file and compiling it using compile:forms/1,2 will work).
	    The <c>syntax_tools</c> application can also handle both
	    formats.</p>
          <p>
	    *** POTENTIAL INCOMPATIBILITY ***</p>
          <p>
	    Own Id: OTP-9643</p>
        </item>
        <item>
          <p>
	    Tuple funs (a two-element tuple with a module name and a
	    function) are now officially deprecated and will be
	    removed in R16. Use '<c>fun M:F/A</c>' instead. To make
	    you aware that your system uses tuple funs, the very
	    first time a tuple fun is applied, a warning will be sent
	    to the error logger.</p>
          <p>
	    Own Id: OTP-9649</p>
        </item>
        <item>
          <p>
	    Eliminate use of deprecated regexp module</p>
          <p>
	    Own Id: OTP-9810</p>
        </item>
      </list>
    </section>

</section>

<section><title>Tools 2.6.6.5</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Teach the emacs mode to compile yecc and leex files</p>
          <p>
	    If visiting a .yrl or .xrl file in emacs with
	    erlang-mode, then the `erlang-compile' function (normally
	    bound to C-c C-k), now knows how to compile yecc and leex
	    files, and then, if that compilation succeeds, also
	    compiles the resulting .erl files.</p>
          <p>
	    Also introduce a `erlang-compile-command-function-alist'
	    to make it possible to hook in other functions for
	    computing compilation commands/expressions, depending on
	    file name. (Thanks to Tomas Abrahamsson )</p>
          <p>
	    Own Id: OTP-9503</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p> Bugs in xref(3) have been fixed. (Thanks to Matthias
	    Lang.) </p>
          <p>
	    Own Id: OTP-9416</p>
        </item>
      </list>
    </section>

</section>

<section><title>Tools 2.6.6.4</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Change make:files to behave more like erlc</p>
          <p>
	    This change removes the unnecessary checks on the files
	    when make:files is called and allows the error checking
	    to be done in compile:file, where the error messages are
	    produced. It does not affect the return value.</p>
          <p>
	    (Thanks to Sam bobroff)</p>
          <p>
	    Own Id: OTP-9179</p>
        </item>
        <item>
          <p>
	    add user specified compiler options on form reloading</p>
          <p>
	    In order to be able to test non-exported functions from
	    another (test) module it is necessary to compile the
	    specific module (at least during the test phase) with the
	    export_all compiler option. This allows complete
	    separation of testing and productive code. At the moment
	    it is not possible to combine this with a test code
	    coverage using the cover module. The problem is that when
	    cover compiling a module using cover:compile_* the code
	    is reloaded into the emulator omitting/filtering the
	    passed user options. In my example above the export_all
	    option would be removed and the non-exported functions
	    cannot be called any more. (Thanks to Tobias Schlager)</p>
          <p>
	    Own Id: OTP-9204</p>
        </item>
        <item>
          <p>
	    Inhibit electric newline after "-&gt;" when inside a type
	    spec</p>
          <p>
	    The Erlang mode for Emacs inserts a newline after every
	    "-&gt;", which saves you one keystroke when writing a
	    function, but that is inappropriate when writing a type
	    spec, as you'd normally keep the spec on one line. This
	    change inhibits the automatic insertion when the current
	    line starts with "-spec" or "-type".(Thanks to Magnus
	    Henoch)</p>
          <p>
	    Own Id: OTP-9255</p>
        </item>
        <item>
          <p>
	    Add a check logic to prevent file descriptor leak</p>
          <p>
	    cover module handle files as raw in export and import.
	    Assert counts of ports are the same at the beginning and
	    at the end of the test case.(Thanks to Shunichi
	    Shinohara)</p>
          <p>
	    Own Id: OTP-9300</p>
        </item>
      </list>
    </section>

</section>

<section><title>Tools 2.6.6.3</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    Declare indentation options as "safe" in erlang-mode for
	    Emacs</p>
          <p>
	    Emacs has a facility for setting options on a per-file
	    basis based on comments in the source file. By default,
	    all options are considered "unsafe", and the user is
	    queried before the variable is set. This patch declares
	    the variables erlang-indent-level, erlang-indent-guard
	    and erlang-argument-indent to be safe, if the value
	    specified in the source file is valid.</p>
          <p>
	    Such declarations usually look like this:</p>
          <p>
	    %% -*- erlang-indent-level: 2 -*-</p>
          <p>
	    and appear on the first line of the file. (thanks to
	    Magnus Henoch)</p>
          <p>
	    Own Id: OTP-9122</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
	    Cover has been improved to take less memory and allow
	    parallel analysis of cover data. Data collection from
	    nodes is now done in parallel and it is now possible to
	    issue multiple analyse and analyse_to_file requests at
	    the same time. A new function call async_analyse_to_file
	    has also been introduced, see the documentation for more
	    details.</p>
          <p>
	    Own Id: OTP-9043 Aux Id: seq11771 </p>
        </item>
      </list>
    </section>

</section>

<section><title>Tools 2.6.6.2</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p>eprof: API sort mismatch has now been fixed. </p>
          <p>
	    Own Id: OTP-8853</p>
        </item>
        <item>
          <p>
	    eprof: fix division by zero in statistics</p>
          <p>
	    Own Id: OTP-8963</p>
        </item>
      </list>
    </section>

</section>

<section><title>Tools 2.6.6.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    <c>cover</c> will now show ampersand characters in the
	    source code correctly. (Thanks to Tom Moertel.)</p>
          <p>
	    Own Id: OTP-8776</p>
        </item>
      </list>
    </section>

</section>

<section><title>Tools 2.6.6</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p>A race condition affecting Cover has been removed.</p>
          <p>
	    Own Id: OTP-8469</p>
        </item>
        <item>
          <p>
	    Emacs improvements:</p>
          <p>
	    Fixed emacs-mode installation problems.</p>
          <p>
	    Fixed a couple of -spec and -type indentation and
	    font-lock problems.</p>
          <p>
	    Fixed error messages on emacs-21.</p>
          <p>
	    Magnus Henoch fixed several issues.</p>
          <p>
	    Ralf Doering, Klas Johansson and Chris Bernard
	    contributed various emacs-eunit improvements.</p>
          <p>
	    Klas Johansson and Dave Peticolas added emacs-flymake
	    support.</p>
          <p>
	    Own Id: OTP-8530</p>
        </item>
      </list>
    </section>


    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p>Xref has been updated to use the <c>re</c> module
	    instead of the deprecated <c>regexp</c> module.</p>
          <p>
	    *** POTENTIAL INCOMPATIBILITY ***</p>
          <p>
	    Own Id: OTP-8472</p>
        </item>
        <item>
	    <p>When given the option <c>{builtins,true}</c> Xref now
	    adds calls to operators.</p>
          <p>
	    Own Id: OTP-8647</p>
        </item>
        <item>
	    <p><c>eprof</c> has been reimplemented with support in
	    the Erlang virtual machine and is now both faster (i.e.
	    slows down the code being measured less) and scales much
	    better. In measurements we saw speed-ups compared to the
	    old eprof ranging from 6 times (for sequential code that
	    only uses one scheduler/core) up to 84 times (for
	    parallel code that uses 8 cores).</p>
	    <p>Note: The API for the <c>eprof</c> has been cleaned up
	    and extended. See the documentation.</p>
          <p>
	    *** POTENTIAL INCOMPATIBILITY ***</p>
          <p>
	    Own Id: OTP-8706</p>
        </item>
      </list>
    </section>

</section>

<section><title>Tools 2.6.5.1</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
            <p>A bug concerning bit comprehensions has been fixed
            in Cover. The bug was introduced in R13B03. 
            (Thanks to Matthew Sackman.)</p>
          <p>Own Id: OTP-8340</p>
        </item>
      </list>
    </section>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
        Add lock profiling tool.</p>
          <p>
        The Lock profiling tool, lcnt, can make use of the
        internal lock statistics when the runtime system is built
        with this feature enabled.</p>
          <p>
        This provides a mechanism to examine potential lock
        bottlenecks within the runtime itself.</p>
          <p>
        - Add erts_debug:lock_counters({copy_save, bool()}). This
        option enables or disables statistics saving for
        destroyed processes and ets-tables. Enabling this might
        consume a lot of memory.</p>
          <p>
        - Add id-numbering for lock classes which is otherwise
        undefined.</p>
          <p>
        Own Id: OTP-8424</p>
        </item>
        <item>
          <p>
        emacs: Moved code skeletons to a separate file and and
        added a configurable variable to choose skeleton. Thanks
        Dave Peticolas.</p>
          <p>
        Own Id: OTP-8446</p>
        </item>
      </list>
    </section>

</section>

<section><title>Tools 2.6.5</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
            <p>The coverage analysis tool <c>cover</c> has been
            improved when it comes to handling list and bit string
            comprehensions (a counter for each qualifier), bit syntax
            expressions (the Value and Size expressions), and try
            expressions (the body called <c>Exprs</c> in the Reference
            Manual). A few (not all) situations where several
            expressions are put on the same line are also handled
            better than before.</p>
          <p>Own Id: OTP-8188 Aux Id: seq11397</p>
        </item>
        <item>
            <p>When loading Cover compiled code on remote nodes 
            running code in the loaded module, a <c>badarg</c>
            failure was sometimes the result. This bug has been fixed.</p>
          <p>Own Id: OTP-8270 Aux Id: seq11423</p>
        </item>
        <item>
            <p>The short-circuit operators <c>andalso</c> and
            <c>orelse</c> are now handled correctly by the coverage
            analysis tool <c>cover</c> (it is no longer checked
            that the second argument returns a Boolean value.)</p>
          <p>Own Id: OTP-8273</p>
        </item>
      </list>
    </section>

</section>

<section><title>Tools 2.6.4</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p><c>cover</c> now properly escapes greater-than and
	    less-than characters in comments in HTML reports. (Thanks
	    to Magnus Henoch.)</p>
          <p>
	    Own Id: OTP-7939</p>
        </item>
      </list>
    </section>

</section>

<section><title>Tools 2.6.3</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
          <p>
            xref:start/1 does now allow anonymous XREF processes to
            be started</p>
          <p>
            Own Id: OTP-7831</p>
        </item>
      </list>
    </section>

</section>

<section><title>Tools 2.6.2</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
	    <p>A bug in the Xref scanner has been fixed.</p>
          <p>
	    Own Id: OTP-7423</p>
        </item>
        <item>
	    <p>A bug in Fprof where the function 'undefined' appeared
	    to call 'undefined' has been corrected.</p>
          <p>
	    Own Id: OTP-7509</p>
        </item>
      </list>
    </section>

</section>

<section><title>Tools 2.6.1</title>

    <section><title>Improvements and New Features</title>
      <list>
        <item>
	    <p>The documentation has been updated so as to reflect
	    the last updates of the Erlang shell as well as the minor
	    modifications of the control sequence <c>p</c> of the
	    <c>io_lib</c> module.</p> <p>Superfluous empty lines have
	    been removed from code examples and from Erlang shell
	    examples.</p>
          <p>
	    Own Id: OTP-6944 Aux Id: OTP-6554, OTP-6911 </p>
        </item>
        <item>
	    <p><c>tuple_size/1</c> and <c>byte_size/1</c> have been
	    substituted for <c>size/1</c>.</p>
          <p>
	    Own Id: OTP-7009</p>
        </item>
        <item>
	    <p>The coverage analysis tool <c>cover</c> now handles
	    the short-circuit Boolean expressions <c>andalso/2</c>
	    and <c>orelse/2</c> properly.</p>
          <p>
	    Own Id: OTP-7095</p>
        </item>
      </list>
    </section>

</section>

<section><title>Tools 2.6</title>

    <section><title>Fixed Bugs and Malfunctions</title>
      <list>
        <item>
          <p>
	    The <c>cover</c> tool could use huge amounts of memory
	    when used in a distributed system.</p>
          <p>
	    Own Id: OTP-6758</p>
        </item>
      </list>
    </section>

</section>


  <section>
    <title>Tools 2.5.5</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>Missing buffer-local declaration in erlang.el has been
            added. Before this fix there could arise problems in
            other emacs modes after visiting a buffer using the
            erlang mode.</p>
          <p>Own Id: OTP-6721</p>
        </item>
        <item>
          <p>Key-map for 'backward-delete-char-untabif updated to work
            properly with Xemacs.</p>
          <p>Own Id: OTP-6723</p>
        </item>
      </list>
    </section>

    <section>
      <title>Improvements and New Features</title>
      <list type="bulleted">
        <item>
          <p>Minor updates of Xref.</p>
          <p>Own Id: OTP-6586</p>
        </item>
        <item>
          <p>Minor Makefile changes.</p>
          <p>Own Id: OTP-6689 Aux Id: OTP-6742 </p>
        </item>
        <item>
          <p>"C-u C-c C-k" now does a compile with both "debug_info"
            and "export_all".</p>
          <p>Own Id: OTP-6741</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Tools 2.5.4.1</title>

    <section>
      <title>Improvements and New Features</title>
      <list type="bulleted">
        <item>
          <p>Changes due to internal interface changes in the erts
            application which are needed at compile-time. No
            functionality has been changed.</p>
          <p>Own Id: OTP-6611 Aux Id: OTP-6580 </p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Tools 2.5.4</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>Made change to support the function erlang-find-tag for
            xemacs and emacs-21.</p>
          <p>Own Id: OTP-6512</p>
        </item>
      </list>
    </section>

    <section>
      <title>Improvements and New Features</title>
      <list type="bulleted">
        <item>
          <p>Minor updates of xref for future compatibility.</p>
          <p>Own Id: OTP-6513</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Tools 2.5.3</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p><c>eprof</c> did not work reliably in the SMP emulator,
            because the trace receiver process could not process the
            trace messages fast enough. Therefore, <c>eprof</c> now
            blocks the other schedulers while profiling.</p>
          <p>Own Id: OTP-6373</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Tools 2.5.2</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>Fprof traces could become truncated for the SMP emulator.
            This bug has now been corrected.</p>
          <p>Own Id: OTP-6246</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Tools 2.5.1</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>eprof now works somewhat better in the SMP emulator.</p>
          <p>Own Id: OTP-6152</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Tools 2.5</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>Fixed some bugs in <c>make</c>:</p>
          <p><c>make:files/1,2</c> can now handle a file in another
            directory as argument, similar to <c>make:all/0,1</c>.</p>
          <p>When specifying a file name including the <c>.erl</c>
            extension in <c>Emakefile</c>, <c>make:all/0,1</c> looked
            for the object code in the wrong place.</p>
          <p>When specifying a file name including the <c>.erl</c>
            extension in <c>Emakefile</c> and some compile options
            for the file, <c>make:files/0,1</c> did not use the
            options as it should do.</p>
          <p>Own Id: OTP-6057 Aux Id: seq10299</p>
        </item>
        <item>
          <p><c>cover</c>: When <c>cover:stop()</c> was called,
            the cover compiled code was not unloaded (as stated in
            the documentation) but simply marked as 'old'. This
            meant that processes lingering in (or with funs
            referencing to) the cover compiled code would survive
            even when the cover server and its ETS tables was
            terminated.</p>
          <p>Now the cover compiled code is unloaded, meaning that
            processes lingering in/with references to it will be
            killed when <c>cover:stop</c> is called, instead of
            later crashing with <c>badarg</c> when trying to bump
            counters in ETS tables no longer existing.</p>
        </item>
      </list>
    </section>

    <section>
      <title>Improvements and New Features</title>
      <list type="bulleted">
        <item>
          <p>Replaced call to deprecated function
            <c>file:file_info/1</c> with call to
            <c>filelib:is_dir/1</c> and <c>filelib:is_regular/1</c>
            in <c>tags.erl</c>.</p>
          <p>Own Id: OTP-6079</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Tools 2.4.7</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>A bug in <c>fprof</c> profiling causing erroneous
            inconsistent trace failure has been corrected.</p>
          <p>Own Id: OTP-5922 Aux Id: seq10203 </p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Tools 2.4.6</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>Emacs: <c>erlang-man-function</c> and
            <c>erlang-man-module</c> used a pattern matching to find
            the requested module that sometimes yielded unexpected
            results. For example, <c>erlang-man-module file</c> would
            display the man page for <c>CosFileTransfer_File</c>.</p>
          <p>Own Id: OTP-5746 Aux Id: seq10096</p>
        </item>
        <item>
          <p>Some compiler warnings and Dialyzer warnings were
            eliminated in the Tools application.</p>
          <p>When tracing to a port (which <c>fprof</c> does),
            there could be fake schedule out/schedule in messages
            sent for a process that had exited.</p>
          <p>Own Id: OTP-5757</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Tools 2.4.5</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>The cross reference tool <c>xref</c> did not handle the new
            <c>fun M:F/A</c> construct properly. This problem has been
            fixed.</p>
          <p>Own Id: OTP-5653</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Tools 2.4.4</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>The <c>cover</c> tool did not escape '&lt;' and '&gt;' not
            being part of HTML tags in HTML log files.</p>
          <p>Own Id: OTP-5588</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Tools 2.4.3</title>

    <section>
      <title>Improvements and New Features</title>
      <list type="bulleted">
        <item>
          <p>It is now possible to encrypt the debug information in
            beam files, to help keep the source code secret. See
            <c>compile(3)</c> for how to provide the key for encrypting,
            and <c>beam_lib(3)</c> for how to provide the key for
            decryption so that tools such as Debugger, <c>xref</c>, or
            <c>cover</c> can be used.</p>
          <p>The <c>beam_lib:chunks/2</c> functions now accepts an
            additional chunk type '<c>compile_info</c>' to retrieve
            the compilation information directly as a term. (Thanks
            to Tobias Lindahl.)</p>
          <p>Own Id: OTP-5460 Aux Id: seq9787</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Tools 2.4.2</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>The <c>cover</c> tool could not analyze empty modules on
            module level.</p>
          <p>Own Id: OTP-5418</p>
        </item>
      </list>
    </section>
  </section>

  <section>
    <title>Tools 2.4.1</title>

    <section>
      <title>Fixed Bugs and Malfunctions</title>
      <list type="bulleted">
        <item>
          <p>The <c>xref</c> analysis <c>locals_not_used</c> could
            return too many functions. This problem has been fixed.</p>
          <p>Own Id: OTP-5071</p>
        </item>
        <item>
          <p>The <c>cover</c> tool could not always compile parse
            transformed modules. This problem has been fixed.</p>
          <p>Own Id: OTP-5305</p>
        </item>
      </list>
    </section>
  </section>
</chapter>