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<img alt="Erlang logo" src="../../../../doc/erlang-logo.png"><br><small><a href="users_guide.html">User's Guide</a><br><a href="index.html">Reference Manual</a><br><a href="release_notes.html">Release Notes</a><br><a href="../pdf/tools-2.6.5.1.pdf">PDF</a><br><a href="../../../../doc/index.html">Top</a></small><p><strong>Tools</strong><br><strong>Release Notes</strong><br><small>Version 2.6.5.1</small></p>
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<ul class="flipMenu" imagepath="../../../../doc/js/flipmenu"><li id="loadscrollpos" title="Tools Release Notes" expanded="true">Tools Release Notes<ul>
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<li title="Tools 2.6.5.1"><a href="notes.html#id2268922">Tools 2.6.5.1</a></li>
<li title="Tools 2.6.5"><a href="notes.html#id2269012">Tools 2.6.5</a></li>
<li title="Tools 2.6.4"><a href="notes.html#id2271318">Tools 2.6.4</a></li>
<li title="Tools 2.6.3"><a href="notes.html#id2271352">Tools 2.6.3</a></li>
<li title="Tools 2.6.2"><a href="notes.html#id2271383">Tools 2.6.2</a></li>
<li title="Tools 2.6.1"><a href="notes.html#id2251628">Tools 2.6.1</a></li>
<li title="Tools 2.6"><a href="notes.html#id2251718">Tools 2.6</a></li>
<li title="Tools 2.5.5"><a href="notes.html#id2251755">Tools 2.5.5</a></li>
<li title="Tools 2.5.4.1"><a href="notes.html#id2257618">Tools 2.5.4.1</a></li>
<li title="Tools 2.5.4"><a href="notes.html#id2257653">Tools 2.5.4</a></li>
<li title="Tools 2.5.3"><a href="notes.html#id2257713">Tools 2.5.3</a></li>
<li title="Tools 2.5.2"><a href="notes.html#id2257755">Tools 2.5.2</a></li>
<li title="Tools 2.5.1"><a href="notes.html#id2253901">Tools 2.5.1</a></li>
<li title="Tools 2.5"><a href="notes.html#id2253934">Tools 2.5</a></li>
<li title="Tools 2.4.7"><a href="notes.html#id2254090">Tools 2.4.7</a></li>
<li title="Tools 2.4.6"><a href="notes.html#id2254128">Tools 2.4.6</a></li>
<li title="Tools 2.4.5"><a href="notes.html#id2261172">Tools 2.4.5</a></li>
<li title="Tools 2.4.4"><a href="notes.html#id2261213">Tools 2.4.4</a></li>
<li title="Tools 2.4.3"><a href="notes.html#id2261251">Tools 2.4.3</a></li>
<li title="Tools 2.4.2"><a href="notes.html#id2261317">Tools 2.4.2</a></li>
<li title="Tools 2.4.1"><a href="notes.html#id2261354">Tools 2.4.1</a></li>
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<h1>1 Tools Release Notes</h1>
<p>This document describes the changes made to the Tools application.</p>
<h3><a name="id2268922">1.1
Tools 2.6.5.1</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<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>
</li>
</ul>
<h4>Improvements and New Features</h4>
<ul>
<li>
<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>
</li>
<li>
<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>
</li>
</ul>
<h3><a name="id2269012">1.2
Tools 2.6.5</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<p>The coverage analysis tool <span class="code">cover</span> 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 <span class="code">Exprs</span> 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>
</li>
<li>
<p>When loading Cover compiled code on remote nodes
running code in the loaded module, a <span class="code">badarg</span>
failure was sometimes the result. This bug has been fixed.</p>
<p>Own Id: OTP-8270 Aux Id: seq11423</p>
</li>
<li>
<p>The short-circuit operators <span class="code">andalso</span> and
<span class="code">orelse</span> are now handled correctly by the coverage
analysis tool <span class="code">cover</span> (it is no longer checked
that the second argument returns a Boolean value.)</p>
<p>Own Id: OTP-8273</p>
</li>
</ul>
<h3><a name="id2271318">1.3
Tools 2.6.4</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<p><span class="code">cover</span> 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>
</li>
</ul>
<h3><a name="id2271352">1.4
Tools 2.6.3</a></h3>
<h4>Improvements and New Features</h4>
<ul>
<li>
<p>
xref:start/1 does now allow anonymous XREF processes to
be started</p>
<p>
Own Id: OTP-7831</p>
</li>
</ul>
<h3><a name="id2271383">1.5
Tools 2.6.2</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<p>A bug in the Xref scanner has been fixed.</p>
<p>
Own Id: OTP-7423</p>
</li>
<li>
<p>A bug in Fprof where the function 'undefined' appeared
to call 'undefined' has been corrected.</p>
<p>
Own Id: OTP-7509</p>
</li>
</ul>
<h3><a name="id2251628">1.6
Tools 2.6.1</a></h3>
<h4>Improvements and New Features</h4>
<ul>
<li>
<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 <span class="code">p</span> of the
<span class="code">io_lib</span> 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>
</li>
<li>
<p><span class="code">tuple_size/1</span> and <span class="code">byte_size/1</span> have been
substituted for <span class="code">size/1</span>.</p>
<p>
Own Id: OTP-7009</p>
</li>
<li>
<p>The coverage analysis tool <span class="code">cover</span> now handles
the short-circuit Boolean expressions <span class="code">andalso/2</span>
and <span class="code">orelse/2</span> properly.</p>
<p>
Own Id: OTP-7095</p>
</li>
</ul>
<h3><a name="id2251718">1.7
Tools 2.6</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<p>
The <span class="code">cover</span> tool could use huge amounts of memory
when used in a distributed system.</p>
<p>
Own Id: OTP-6758</p>
</li>
</ul>
<h3><a name="id2251755">1.8
Tools 2.5.5</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<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>
</li>
<li>
<p>Key-map for 'backward-delete-char-untabif updated to work
properly with Xemacs.</p>
<p>Own Id: OTP-6723</p>
</li>
</ul>
<h4>Improvements and New Features</h4>
<ul>
<li>
<p>Minor updates of Xref.</p>
<p>Own Id: OTP-6586</p>
</li>
<li>
<p>Minor Makefile changes.</p>
<p>Own Id: OTP-6689 Aux Id: OTP-6742 </p>
</li>
<li>
<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>
</li>
</ul>
<h3><a name="id2257618">1.9
Tools 2.5.4.1</a></h3>
<h4>Improvements and New Features</h4>
<ul>
<li>
<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>
</li>
</ul>
<h3><a name="id2257653">1.10
Tools 2.5.4</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<p>Made change to support the function erlang-find-tag for
xemacs and emacs-21.</p>
<p>Own Id: OTP-6512</p>
</li>
</ul>
<h4>Improvements and New Features</h4>
<ul>
<li>
<p>Minor updates of xref for future compatibility.</p>
<p>Own Id: OTP-6513</p>
</li>
</ul>
<h3><a name="id2257713">1.11
Tools 2.5.3</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<p><span class="code">eprof</span> did not work reliably in the SMP emulator,
because the trace receiver process could not process the
trace messages fast enough. Therefore, <span class="code">eprof</span> now
blocks the other schedulers while profiling.</p>
<p>Own Id: OTP-6373</p>
</li>
</ul>
<h3><a name="id2257755">1.12
Tools 2.5.2</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<p>Fprof traces could become truncated for the SMP emulator.
This bug has now been corrected.</p>
<p>Own Id: OTP-6246</p>
</li>
</ul>
<h3><a name="id2253901">1.13
Tools 2.5.1</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<p>eprof now works somewhat better in the SMP emulator.</p>
<p>Own Id: OTP-6152</p>
</li>
</ul>
<h3><a name="id2253934">1.14
Tools 2.5</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<p>Fixed some bugs in <span class="code">make</span>:</p>
<p><span class="code">make:files/1,2</span> can now handle a file in another
directory as argument, similar to <span class="code">make:all/0,1</span>.</p>
<p>When specifying a file name including the <span class="code">.erl</span>
extension in <span class="code">Emakefile</span>, <span class="code">make:all/0,1</span> looked
for the object code in the wrong place.</p>
<p>When specifying a file name including the <span class="code">.erl</span>
extension in <span class="code">Emakefile</span> and some compile options
for the file, <span class="code">make:files/0,1</span> did not use the
options as it should do.</p>
<p>Own Id: OTP-6057 Aux Id: seq10299</p>
</li>
<li>
<p><span class="code">cover</span>: When <span class="code">cover:stop()</span> 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 <span class="code">cover:stop</span> is called, instead of
later crashing with <span class="code">badarg</span> when trying to bump
counters in ETS tables no longer existing.</p>
</li>
</ul>
<h4>Improvements and New Features</h4>
<ul>
<li>
<p>Replaced call to deprecated function
<span class="code">file:file_info/1</span> with call to
<span class="code">filelib:is_dir/1</span> and <span class="code">filelib:is_regular/1</span>
in <span class="code">tags.erl</span>.</p>
<p>Own Id: OTP-6079</p>
</li>
</ul>
<h3><a name="id2254090">1.15
Tools 2.4.7</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<p>A bug in <span class="code">fprof</span> profiling causing erroneous
inconsistent trace failure has been corrected.</p>
<p>Own Id: OTP-5922 Aux Id: seq10203 </p>
</li>
</ul>
<h3><a name="id2254128">1.16
Tools 2.4.6</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<p>Emacs: <span class="code">erlang-man-function</span> and
<span class="code">erlang-man-module</span> used a pattern matching to find
the requested module that sometimes yielded unexpected
results. For example, <span class="code">erlang-man-module file</span> would
display the man page for <span class="code">CosFileTransfer_File</span>.</p>
<p>Own Id: OTP-5746 Aux Id: seq10096</p>
</li>
<li>
<p>Some compiler warnings and Dialyzer warnings were
eliminated in the Tools application.</p>
<p>When tracing to a port (which <span class="code">fprof</span> does),
there could be fake schedule out/schedule in messages
sent for a process that had exited.</p>
<p>Own Id: OTP-5757</p>
</li>
</ul>
<h3><a name="id2261172">1.17
Tools 2.4.5</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<p>The cross reference tool <span class="code">xref</span> did not handle the new
<span class="code">fun M:F/A</span> construct properly. This problem has been
fixed.</p>
<p>Own Id: OTP-5653</p>
</li>
</ul>
<h3><a name="id2261213">1.18
Tools 2.4.4</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<p>The <span class="code">cover</span> tool did not escape '<' and '>' not
being part of HTML tags in HTML log files.</p>
<p>Own Id: OTP-5588</p>
</li>
</ul>
<h3><a name="id2261251">1.19
Tools 2.4.3</a></h3>
<h4>Improvements and New Features</h4>
<ul>
<li>
<p>It is now possible to encrypt the debug information in
beam files, to help keep the source code secret. See
<span class="code">compile(3)</span> for how to provide the key for encrypting,
and <span class="code">beam_lib(3)</span> for how to provide the key for
decryption so that tools such as Debugger, <span class="code">xref</span>, or
<span class="code">cover</span> can be used.</p>
<p>The <span class="code">beam_lib:chunks/2</span> functions now accepts an
additional chunk type '<span class="code">compile_info</span>' to retrieve
the compilation information directly as a term. (Thanks
to Tobias Lindahl.)</p>
<p>Own Id: OTP-5460 Aux Id: seq9787</p>
</li>
</ul>
<h3><a name="id2261317">1.20
Tools 2.4.2</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<p>The <span class="code">cover</span> tool could not analyze empty modules on
module level.</p>
<p>Own Id: OTP-5418</p>
</li>
</ul>
<h3><a name="id2261354">1.21
Tools 2.4.1</a></h3>
<h4>Fixed Bugs and Malfunctions</h4>
<ul>
<li>
<p>The <span class="code">xref</span> analysis <span class="code">locals_not_used</span> could
return too many functions. This problem has been fixed.</p>
<p>Own Id: OTP-5071</p>
</li>
<li>
<p>The <span class="code">cover</span> tool could not always compile parse
transformed modules. This problem has been fixed.</p>
<p>Own Id: OTP-5305</p>
</li>
</ul>
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