From: simonpj <unknown>
Date: Thu, 12 Feb 2004 14:58:46 +0000 (+0000)
Subject: [project @ 2004-02-12 14:58:46 by simonpj]
X-Git-Tag: Approx_11550_changesets_converted~86
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;h=dd329247c047b05f6753e003bd276c3c04254a03;p=ghc-hetmet.git

[project @ 2004-02-12 14:58:46 by simonpj]
Document non-std behaviour of array
---

diff --git a/ghc/docs/users_guide/bugs.sgml b/ghc/docs/users_guide/bugs.sgml
index 3b1ec99..a81f193 100644
--- a/ghc/docs/users_guide/bugs.sgml
+++ b/ghc/docs/users_guide/bugs.sgml
@@ -97,12 +97,14 @@
 	<varlistentry>
 	  <term>Multiply-defined array elements&mdash;not checked:</term>
 	  <listitem>
-	    <para>This code fragment <emphasis>should</emphasis>
+	    <para>This code fragment should
 	    elicit a fatal error, but it does not:
 
 <programlisting>
 main = print (array (1,1) [(1,2), (1,3)])</programlisting>
-
+GHC's implemetation of <literal>array</literal> takes the value of an
+array slot from the last (index,value) pair in the list, and does no
+checking for duplicates.  The reason for this is efficiency, pure and simple.
             </para>
 	  </listitem>
 	</varlistentry>