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<?xml version="1.0" encoding="iso-8859-1"?>
<sect1 id="release-7-10-3">
<title>Release notes for version 7.10.3</title>
<para>
The 7.10.3 release is a bugfix release, with over 70+ bug fixes
relative to 7.10.2. The major fixes are listed below. For the full
list with more detail, see the <ulink
url="https://ghc.haskell.org/trac/ghc/milestone/7.10.3">GHC 7.10.3
milestone</ulink> on our bug tracker.
</para>
<sect2>
<title>GHC</title>
<itemizedlist>
<listitem>
<para>The simplifier no longer simplifies rewrite rules.</para>
<para>
Starting with 7.10.2 GHC would simplify both the left- and
right-hand-sides of rewrite rules, causing a variety of unexpected behavior.
Simplification of the LHS resulted in various rules to fail to fire (<ulink
href="https://ghc.haskell.org/trac/ghc/ticket/10528">Trac #10528</ulink>, in
particular affecting the widely used <literal>text</literal> library)
whereas rewrites of the RHS broke some of the more exotic uses of rewrite rules
(e.g. HERMIT, <ulink href="https://ghc.haskell.org/trac/ghc/ticket/10829">Trac
#10829).</ulink>
</para>
</listitem>
<listitem>
<para>
A bug in the simplifier's treatment of phantom type variables in rules
resulting in a compiler-crash has been fixed. (<ulink
href="https://ghc.haskell.org/trac/ghc/ticket/10689">Trac #10689</ulink>).
</para>
</listitem>
<listitem>
<para>
A simplifier bug resulting in incorrect results when comparing against
-0.0 has been fixed (<ulink
href="https://ghc.haskell.org/trac/ghc/ticket/9238">Trac #9238</ulink>).
</para>
</listitem>
<listitem>
<para>
The compiler is now better able to work around platform limits on
command-line length on Windows thanks to support for response files
(<ulink href="https://ghc.haskell.org/trac/ghc/ticket/10375">Trac
#10375</ulink>) and an upgrade to the GCC toolchain (<ulink
href="https://ghc.haskell.org/trac/ghc/ticket/10726">Trac
#10726</ulink>)
</para>
</listitem>
<listitem>
<para>
The linker is now far less verbose when faced with certain warning conditions on Windows.
(<ulink href="https://ghc.haskell.org/trac/ghc/ticket/9297">Trac
#9297</ulink>).
</para>
</listitem>
<listitem>
<para>
Framework flags are now included in the linker command line on Mac OS X
(<ulink href="https://ghc.haskell.org/trac/ghc/ticket/10568">Trac
#10568</ulink>).
</para>
</listitem>
<listitem>
<para>
Compiler error messages containing Unicode characters no longer crash
the compiler on platforms without Unicode support.
(<ulink href="https://ghc.haskell.org/trac/ghc/ticket/6037">Trac
#6037</ulink>).
</para>
</listitem>
<listitem>
<para>
ARM support should be substantially more reliable as the compiler now
takes precautions to avoid linking against Thumb code (<ulink
href="https://ghc.haskell.org/trac/ghc/ticket/10375">Trac #10375</ulink>).
</para>
</listitem>
<listitem>
<para>
A bug in the typechecker's treatment of
<literal>PartialTypeSignatures</literal> which previously resulted in
a compile-time crash has been fixed. (<ulink
href="https://ghc.haskell.org/trac/ghc/ticket/10438">Trac #10438</ulink>).
</para>
</listitem>
<listitem>
<para>
A typechecker bug leading to the compiler crashing has been resolved
(<ulink href="https://ghc.haskell.org/trac/ghc/ticket/10489">Trac
#10489</ulink>).
</para>
</listitem>
<listitem>
<para>
Due to a <ulink href="https://ghc.haskell.org/trac/ghc/ticket/10826">
security issue
</ulink>, Safe Haskell now forbids annotations in programs marked as
<literal>-XSafe</literal>
</para>
</listitem>
<listitem>
<para>
The template Haskell <literal>getQ</literal> and
<literal>putQ</literal> functions are fixed (having been broken since GHC
7.10.1, (<ulink href="https://ghc.haskell.org/trac/ghc/ticket/10596">Trac
#10596</ulink>).
</para>
</listitem>
</itemizedlist>
</sect2>
<sect2>
<title>Libraries</title>
<sect3>
<title>base</title>
<itemizedlist>
<listitem>
<para>
Version number 4.8.2.0 (was 4.8.1.0)
</para>
</listitem>
<listitem>
<para>
The <literal>GiveGCStats</literal>,
<literal>DoCostCentres</literal>, <literal>DoHeapProfile</literal>,
<literal>DoTrace</literal>, <literal>Time</literal>, and <literal>Nat</literal>
datatypes are now exported from
<literal>GHC.RTS.Flags</literal>.
</para>
</listitem>
</itemizedlist>
</sect3>
</sect2>
<sect2>
<title>Known bugs</title>
<itemizedlist>
</itemizedlist>
</sect2>
</sect1>
|
