File 0462-Document-bit_size-in-match-specs-and-allow-in-fun2ms.patch of Package erlang

From 8f7c468bf851dbaba72bb230bae42034de7d2203 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C3=A9ter=20G=C3=B6m=C3=B6ri?= <gomoripeti@gmail.com>
Date: Tue, 25 Sep 2018 16:49:22 +0200
Subject: [PATCH] Document bit_size in match-specs and allow in fun2ms

It is already allowed in match-specs.
---
 erts/doc/src/match_spec.xml     | 7 +++++--
 lib/stdlib/src/ms_transform.erl | 1 +
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/erts/doc/src/match_spec.xml b/erts/doc/src/match_spec.xml
index 5cd6dc1750..48e502739a 100644
--- a/erts/doc/src/match_spec.xml
+++ b/erts/doc/src/match_spec.xml
@@ -112,6 +112,7 @@
         <c><![CDATA[element]]></c> | <c><![CDATA[hd]]></c> |
         <c><![CDATA[length]]></c> | <c><![CDATA[node]]></c> |
         <c><![CDATA[round]]></c> | <c><![CDATA[size]]></c> |
+        <c><![CDATA[bit_size]]></c> |
         <c><![CDATA[tl]]></c> | <c><![CDATA[trunc]]></c> |
         <c><![CDATA['+']]></c> | <c><![CDATA['-']]></c> |
         <c><![CDATA['*']]></c> | <c><![CDATA['div']]></c> |
@@ -191,6 +192,7 @@
         <c><![CDATA[element]]></c> | <c><![CDATA[hd]]></c> |
         <c><![CDATA[length]]></c> | <c><![CDATA[node]]></c> |
         <c><![CDATA[round]]></c> | <c><![CDATA[size]]></c> |
+        <c><![CDATA[bit_size]]></c> |
         <c><![CDATA[tl]]></c> | <c><![CDATA[trunc]]></c> |
         <c><![CDATA['+']]></c> | <c><![CDATA['-']]></c> |
         <c><![CDATA['*']]></c> | <c><![CDATA['div']]></c> |
@@ -266,8 +268,9 @@
             other <c>false</c> to return <c><![CDATA[true]]></c>; otherwise
             <c><![CDATA['xor']]></c> returns false.</p>
         </item>
-        <tag><c>abs</c>, <c>element</c>, <c>hd</c>, <c>length</c>, <c>node</c>,
-          <c>round</c>, <c>size</c>, <c>tl</c>, <c>trunc</c>, <c>'+'</c>,
+        <tag><c>abs</c>, <c>element</c>, <c>hd</c>, <c>length</c>,
+          <c>map_get</c>, <c>map_size</c>, <c>node</c>, <c>round</c>,
+          <c>size</c>, <c>bit_size</c>, <c>tl</c>, <c>trunc</c>, <c>'+'</c>,
           <c>'-'</c>, <c>'*'</c>, <c>'div'</c>, <c>'rem'</c>, <c>'band'</c>,
           <c>'bor'</c>, <c>'bxor'</c>, <c>'bnot'</c>, <c>'bsl'</c>,
           <c>'bsr'</c>, <c>'>'</c>, <c>'>='</c>, <c>'&lt;'</c>, <c>'=&lt;'</c>,
diff --git a/lib/stdlib/src/ms_transform.erl b/lib/stdlib/src/ms_transform.erl
index 3845e35e9b..6d243e1bec 100644
--- a/lib/stdlib/src/ms_transform.erl
+++ b/lib/stdlib/src/ms_transform.erl
@@ -935,6 +935,7 @@ real_guard_function(node,0) -> true;
 real_guard_function(node,1) -> true;
 real_guard_function(round,1) -> true;
 real_guard_function(size,1) -> true;
+real_guard_function(bit_size,1) -> true;
 real_guard_function(map_size,1) -> true;
 real_guard_function(tl,1) -> true;
 real_guard_function(trunc,1) -> true;
-- 
2.16.4