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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<tr><td><span title='2023-07-20 10:11:33 +0200'>2023-07-20</span></td><td><a href='/guix/commit/gnu/packages/elf.scm?id=8b74e7d52107d6ec9813b446b041838bd111c648'>gnu: elfutils: Skip failing tests on the Hurd.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/elf.scm (elfutils)[arguments]:  When building natively on the Hurd,
add phase 'skip-tests'.
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2023-04-18 11:00:47 +0300'>2023-04-18</span></td><td><a href='/guix/commit/gnu/packages/elf.scm?id=e0f43c6a27d2930e95bae9710e369eb627ecbcf5'>gnu: elfutils: Skip 3 more tests on riscv64-linux.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/elf.scm (elfutils)[arugments]: When building for
riscv64-linux skip 3 more failing tests.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2023-01-30 12:39:40 +0200'>2023-01-30</span></td><td><a href='/guix/commit/gnu/packages/elf.scm?id=4cf1acc7f3033b50b0bf19e02c9f522d522d338c'>Merge remote-tracking branch 'origin/master' into core-updates</a><span class='msg-avail'>...<span class='msg-tooltip'> Conflicts:
	doc/guix.texi
	gnu/local.mk
	gnu/packages/admin.scm
	gnu/packages/base.scm
	gnu/packages/chromium.scm
	gnu/packages/compression.scm
	gnu/packages/databases.scm
	gnu/packages/diffoscope.scm
	gnu/packages/freedesktop.scm
	gnu/packages/gnome.scm
	gnu/packages/gnupg.scm
	gnu/packages/guile.scm
	gnu/packages/inkscape.scm
	gnu/packages/llvm.scm
	gnu/packages/openldap.scm
	gnu/packages/pciutils.scm
	gnu/packages/ruby.scm
	gnu/packages/samba.scm
	gnu/packages/sqlite.scm
	gnu/packages/statistics.scm
	gnu/packages/syndication.scm
	gnu/packages/tex.scm
	gnu/packages/tls.scm
	gnu/packages/version-control.scm
	gnu/packages/xml.scm
	guix/build-system/copy.scm
	guix/scripts/home.scm
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2023-01-23 14:19:11 +0100'>2023-01-23</span></td><td><a href='/guix/commit/gnu/packages/elf.scm?id=04ade01beb95da45d63ca1f58126508d0491d99d'>gnu: Add libdwarf.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/elf.scm (libdwarf): New variable.
</span></span></td><td>Pierre Neidhardt</td></tr>
<tr><td><span title='2022-08-11 23:36:10 +0200'>2022-08-11</span></td><td><a href='/guix/commit/gnu/packages/elf.scm?id=77eb3008e350c069e0ae8df6a91bf0ebdcfc2ac0'>Merge branch 'staging' into core-updates</a></td><td>Marius Bakke</td></tr>
<tr><td><span title='2022-08-11 00:21:11 +0200'>2022-08-11</span></td><td><a href='/guix/commit/gnu/packages/elf.scm?id=d4f3fd021f9908958b2281f66927baaa52edcdc4'>gnu: libabigail: Remove input labels.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/elf.scm (libabigail)[native-inputs]: Remove labels.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2022-08-11 00:21:11 +0200'>2022-08-11</span></td><td><a href='/guix/commit/gnu/packages/elf.scm?id=57771d42b5e1cf16469ba02a7ef87552ff03a30f'>gnu: libabigail: Update to 2.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/elf.scm (libabigail): Update to 2.0.
</span></span></td><td>Marius Bakke</td></tr>