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>
 	{
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<div class='path'>path: <a href='/guix/log/?id=169c4e612bc0cd498fddd0ffb039aa952cf5e8c0'>root</a>/<a href='/guix/log/etc?id=169c4e612bc0cd498fddd0ffb039aa952cf5e8c0'>etc</a>/<a href='/guix/log/etc/source-manifest.scm?id=169c4e612bc0cd498fddd0ffb039aa952cf5e8c0'>source-manifest.scm</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/etc/source-manifest.scm?id=169c4e612bc0cd498fddd0ffb039aa952cf5e8c0&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2024-12-01 20:14:15 +0100'>2024-12-01</span></td><td><a href='/guix/commit/etc/source-manifest.scm?id=4b5dae8defe4c0d5e98b5ce6abba853007485f23'>packages: Factorize ‘all-packages’.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages.scm (all-packages): New procedure.
* etc/source-manifest.scm (all-packages): Remove.
* guix/scripts/graph.scm (all-packages): Remove.
* guix/scripts/refresh.scm (all-packages): Remove.
* guix/scripts/weather.scm (all-packages): Remove.

Change-Id: I6072952c4b877b541037ce86402cfb7744eeb0a0
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-09-14 11:50:58 +0200'>2021-09-14</span></td><td><a href='/guix/commit/etc/source-manifest.scm?id=3b758dd22d691964ebbc0ce9521508fbc397263a'>etc: Add 'source-manifest.scm'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* etc/source-manifest.scm: New file.
* Makefile.am (EXTRA_DIST): Add it.
</span></span></td><td>Ludovic Courtès</td></tr>