From 5b8609d544911b60a1c384b11d96c147128a848d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= <bjorn@erlang.org>
Date: Tue, 18 Jan 2011 16:45:50 +0100
Subject: Lower the maximum arity from 256 to 255

Historically, for no good reason, a function is allowed to have
from 0 to 256 arguments. Thus, the number of arguments *almost*
fits into a byte.

HiPE only supports up to 255 arguments (because it assumes that
the function arity fits into a single byte), and fixing that limitation
would require ugly special-case handling. In Dialyzer, the arity
type is defined to be a byte (i.e. 0..255).

Since no-one uses functions with 256 arguments anyway, lower the
limit to 255.
---
 system/doc/efficiency_guide/advanced.xml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'system')

diff --git a/system/doc/efficiency_guide/advanced.xml b/system/doc/efficiency_guide/advanced.xml
index 2383e3cf3d..8126b93a2d 100644
--- a/system/doc/efficiency_guide/advanced.xml
+++ b/system/doc/efficiency_guide/advanced.xml
@@ -4,7 +4,7 @@
 <chapter>
   <header>
     <copyright>
-      <year>2001</year><year>2010</year>
+      <year>2001</year><year>2011</year>
       <holder>Ericsson AB. All Rights Reserved.</holder>
     </copyright>
     <legalnotice>
@@ -200,7 +200,7 @@ On 64-bit architectures: 4 words for a reference from the current local node, an
       <seealso marker="#ports">the maximum number of Erlang ports</seealso>
        available, and operating system specific settings and limits.</item>
       <tag><em>Number of arguments to a function or fun</em></tag>
-      <item>256</item>
+      <item>255</item>
     </taglist>
   </section>
 </chapter>
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