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diff --git a/lib/compiler/doc/src/notes.xml b/lib/compiler/doc/src/notes.xml index 990d838060..4938c6920a 100644 --- a/lib/compiler/doc/src/notes.xml +++ b/lib/compiler/doc/src/notes.xml @@ -32,185 +32,6 @@ <p>This document describes the changes made to the Compiler application.</p> -<section><title>Compiler 8.0</title> - - <section><title>Fixed Bugs and Malfunctions</title> - <list> - <item> - <p> - A floating point zero (0.0) can be both positive (+0.0) - and negative (-0.0). Multiple bugs in the compiler, - runtime system, and STDLIB have been fixed to ensure that - the minus sign on 0.0 is not lost.</p> - <p> - Own Id: OTP-17077 Aux Id: ERL-1431, PR-2903, PR-2905, - PR-2906 </p> - </item> - <item> - <p>A repeated stack trace variable in a try/catch was not - rejected. The following example will now cause a - compilation error:</p> <pre>try E catch _:A:A -> A - end.</pre> - <p> - Own Id: OTP-17104 Aux Id: ERL-1380 </p> - </item> - <item> - <p>Eliminated a Dialyzer crashed when the <c>-MMD</c> - option is used to generate a dependency file and a BEAM - file a the same time.</p> - <p> - Own Id: OTP-17118 Aux Id: PR-2825 </p> - </item> - <item> - <p>When the <c>makedep</c> option was given, the compiler - would crash if the dependency output contained non-latin1 - characters. The compiler will now output the dependency - information encoded in UTF-8 to avoid crashing.</p> - <p> - Own Id: OTP-17206</p> - </item> - </list> - </section> - - - <section><title>Improvements and New Features</title> - <list> - <item> - <p>Selective receive optimization will now be applied - much more often.</p> - <p>The new <seeguide - marker="system/efficiency_guide:processes#recv_opt_info"><c>recv_opt_info</c></seeguide> - compile flag can be used to print diagnostics relating to - this optimization.</p> - <p> - You can read more about the <seeguide - marker="system/efficiency_guide:processes#receiving-messages">selective - receive optimization</seeguide> in the Efficiency Guide.</p> - <p> - Own Id: OTP-10391 Aux Id: OTP-16226 </p> - </item> - <item> - <p><c>erlang:throw/1</c> will no longer build stack - traces when we can prove that they will never be - inspected.</p> - <p> - Own Id: OTP-16334</p> - </item> - <item> - <p>Variables bound between the keywords 'try' and 'of' - can now be used in the clauses following the 'of' keyword - (that is, in the success case when no exception was - raised).</p> - <p> - Own Id: OTP-16706 Aux Id: ERL-1281 </p> - </item> - <item> - <p> - Compiler warnings and errors now include column numbers - in addition to line numbers.</p> - <p> - When a compiler message is emitted, the source line is - printed along with a marker (a <c>^</c> character) that - indicates the column position of the issue. The option - '<c>brief</c>' removes the printout of the source line.</p> - <p> - The compiler option <c>{error_location, line | - column}</c> has been added. The default value is - <c>column</c>. Besides adding column numbers to - compilation warnings and errors, the option also - determines whether column numbers are included in - abstract code. If tools stop working, setting the - environment variable <c>ERL_COMPILER_OPTIONS</c> can help - (include <c>{error_location, line}</c>).</p> - <p> - The compiler will now call the function - <c>PT</c>:<c>parse_transform_info/0</c> in parse - transforms (if it exists). It can be used by parse - transforms to signal that they can only handle line - numbers in abstract code.</p> - <p> - *** POTENTIAL INCOMPATIBILITY ***</p> - <p> - Own Id: OTP-16824 Aux Id: PR-2664, PR-3006 </p> - </item> - <item> - <p>Fixed a performance bug that made functions with lots - of <c>try/after</c> blocks slow to compile.</p> - <p> - Own Id: OTP-16867 Aux Id: ERL-1354 </p> - </item> - <item> - <p>The experimental HiPE application has been removed, - together with all related functionality in other - applications.</p> - <p> - *** POTENTIAL INCOMPATIBILITY ***</p> - <p> - Own Id: OTP-16963</p> - </item> - <item> - <p>Generators in list and binary comprehensions will now - raise a <c>{bad_generator,Generator}</c> exception if the - generator has an incorrect type (instead of raising an - ad-hoc <c>badarg</c> or <c>badarih</c> exception). - Similarly, when a filter does not evaluate to a boolean, - a <c>{bad_filter,Filter}</c> exception will be raised. - Some minor bugs in the compilation of binary - comprehensions have also been fixed.</p> - <p> - Own Id: OTP-16964</p> - </item> - <item> - <p>Some compiler warnings, such as the warning for an - expression whose result is ignored, could not be - suppressed by assigning to a variable beginning with - '<c>_</c>', but only by assigning to the anonymous - variable ('<c>_</c>'). This has now been changed so that - any warning that can be suppressed by assigning to the - anonymous variable can also be suppressed by assigning to - a variable beginning with '<c>_</c>'.</p> - <p> - Own Id: OTP-16981 Aux Id: ERL-1113 </p> - </item> - <item> - <p> - The previously undocumented compiler options - <c>warn_missing_spec</c> and <c>warn_missing_spec_all</c> - are now documented.</p> - <p> - Own Id: OTP-17078 Aux Id: ERL-1430, PR-2918 </p> - </item> - <item> - <p>The compiler will now emit warnings when (previously - bound) underscore-prefixed variables are matched.</p> - <p> - Own Id: OTP-17123</p> - </item> - <item> - <p>Erlang source files not encoded in utf-8 will no - longer be accepted by the compiler unless it contains a - "coding: latin-1" comment.</p> - <p> - Own Id: OTP-17168</p> - </item> - <item> - <p>New compiler options <c>from_abstr</c> and - <c>no_lint</c> have been added. They are useful when - implementing other languages running on the BEAM.</p> - <p> - Own Id: OTP-17172</p> - </item> - <item> - <p>The bit matching and construction syntax now supports - 16-bit floats (IEEE 754-2008).</p> - <p> - Own Id: OTP-17207</p> - </item> - </list> - </section> - -</section> - <section><title>Compiler 7.6.6</title> <section><title>Fixed Bugs and Malfunctions</title> |