Based on (hunk for changelog removed)
From b62c902dd258125cac86cd2df21fc898035a43d3 Mon Sep 17 00:00:00 2001
From: Michael Pruett <michael@68k.org>
Date: Mon, 29 Aug 2016 23:08:26 -0500
Subject: [PATCH] Fix undefined behavior in sign conversion.


---
 ChangeLog                           | 5 +++++
 libaudiofile/modules/SimpleModule.h | 3 ++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/libaudiofile/modules/SimpleModule.h b/libaudiofile/modules/SimpleModule.h
index 03c6c69..bad85ad 100644
--- a/libaudiofile/modules/SimpleModule.h
+++ b/libaudiofile/modules/SimpleModule.h
@@ -123,7 +123,8 @@ struct signConverter
 	typedef typename IntTypes<Format>::UnsignedType UnsignedType;
 
 	static const int kScaleBits = (Format + 1) * CHAR_BIT - 1;
-	static const int kMinSignedValue = -1 << kScaleBits;
+	static const int kMaxSignedValue = (((1 << (kScaleBits - 1)) - 1) << 1) + 1;
+	static const int kMinSignedValue = -kMaxSignedValue - 1;
 
 	struct signedToUnsigned : public std::unary_function<SignedType, UnsignedType>
 	{
>summary</a><a href='/guix/refs/?id=67a204920285adaf5603da1bc5cc13726cbef191'>refs</a><a class='active' href='/guix/log/.gitattributes'>log</a><a href='/guix/tree/.gitattributes?id=67a204920285adaf5603da1bc5cc13726cbef191'>tree</a><a href='/guix/commit/.gitattributes?id=67a204920285adaf5603da1bc5cc13726cbef191'>commit</a><a href='/guix/diff/.gitattributes?id=67a204920285adaf5603da1bc5cc13726cbef191'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/.gitattributes'>
<input type='hidden' name='id' value='67a204920285adaf5603da1bc5cc13726cbef191'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=67a204920285adaf5603da1bc5cc13726cbef191'>root</a>/<a href='/guix/log/.gitattributes?id=67a204920285adaf5603da1bc5cc13726cbef191'>.gitattributes</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/.gitattributes?id=67a204920285adaf5603da1bc5cc13726cbef191&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-10-14 00:24:34 +0200'>2021-10-14</span></td><td><a href='/guix/commit/.gitattributes?id=f8b10932c86cf4c1657a67e8c484d76f757b64bd'>Add git configuration templates to improve diff hunk header detection.</a><span class='msg-avail'>...</span></td><td>Sarah Morgensen</td></tr>