Fix a bug whereby 'mformat' could end up passing uninitialized bytes
to write(2).  This could be reproduced with:

  mformat -C -f 1440 -L 16  -N 77777777 -i  /tmp/x ::

where the output of /tmp/x would be non-deterministic.

Patch by Ludovic Courtès <ludo@gnu.org>.

--- mtools-4.0.23/mformat.c	2019-04-21 00:12:01.496116195 +0200
+++ mtools-4.0.23/mformat.c	2019-04-21 00:12:36.675967157 +0200
@@ -927,6 +927,7 @@ void mformat(int argc, char **argv, int
 	
 	char *endptr;
 
+	memset(&boot.bytes, '\0', sizeof boot);
 	hs = hs_set = 0;
 	argtracks = 0;
 	argheads = 0;

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<div class='path'>path: <a href='/guix/log/?id=9d0da4ced3c53dd841d414e886c32c4d5ee886ec'>root</a>/<a href='/guix/log/nix?id=9d0da4ced3c53dd841d414e886c32c4d5ee886ec'>nix</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/nix?id=9d0da4ced3c53dd841d414e886c32c4d5ee886ec&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-09-24 02:00:00 +0200'>2023-09-24</span></td><td><a href='/guix/commit/nix?id=0500af5556307d0a4c14a23864e9e4bccd2643d7'>Revert "build: Add missing guix-gc.timer file to binary tarball."</a><span class='msg-avail'>...<span class='msg-tooltip'>This reverts commit 69f6edc1a8596d2cb4c67e0435d35633af6f3cbc.

The intention is good, but nodist_systemdservice_DATA are meant to be
disposable artefacts generated from corresponding ‘.in’ files.

etc/guix-gc.timer doesn't fit that description, breaking builds:

  $ make clean &amp;&amp; make
  …
  make[2]: *** No rule to make target 'etc/guix-gc.timer', needed by 'all-am'.  Stop.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2023-09-26 17:36:58 +0200'>2023-09-26</span></td><td><a href='/guix/commit/nix?id=95f21231352b66f92c466cb30f2258291e854f2f'>daemon: Add “git-download” built-in builder.</a><span class='msg-avail'>...<span class='msg-tooltip'>The new builder makes it possible to break cycles that occurs when the
fixed-output derivation for the source of a dependency of ‘git’ would
itself depend on ‘git’.

* guix/scripts/perform-download.scm (perform-git-download): New
procedure.
(perform-download): Move fixed-output derivation check to…
(guix-perform-download): … here.  Invoke ‘perform-download’ or
‘perform-git-download’ depending on what ‘derivation-builder’ returns.
* nix/libstore/builtins.cc (builtins): Add “git-download”.
* tests/derivations.scm ("built-in-builders"): Update.
("'git-download' built-in builder")
("'git-download' built-in builder, invalid hash")
("'git-download' built-in builder, invalid commit")
("'git-download' built-in builder, not found"): New tests.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-09-09 18:47:35 +0200'>2023-09-09</span></td><td><a href='/guix/commit/nix?id=cd469932758bf2bec1ff9c82aeb373e18730d0c4'>daemon: Fix build with GCC 13.</a><span class='msg-avail'>...<span class='msg-tooltip'>The sqlite.hh file uses fixed-width integer types from stdint.h. As
such, it needs to include &lt;cstdint&gt;. Without this include, the file
doesn't compile successfully with GCC13.

See: https://gcc.gnu.org/gcc-13/porting_to.html#header-dep-changes

* nix/libstore/sqlite.hh: include &lt;cstdint&gt;

Signed-off-by: Sören Tempel &lt;soeren@soeren-tempel.net&gt;
Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Sören Tempel</td></tr>
<tr><td><span title='2023-08-31 23:31:49 -0400'>2023-08-31</span></td><td><a href='/guix/commit/nix?id=69f6edc1a8596d2cb4c67e0435d35633af6f3cbc'>build: Add missing guix-gc.timer file to binary tarball.</a><span class='msg-avail'>...<span class='msg-tooltip'>Partially fixes &lt;https://issues.guix.gnu.org/65117&gt;.

* nix/local.mk (nodist_systemdservice_DATA): Add etc/guix-gc.timer.
</span></span></td><td>Maxim Cournoyer</td></tr>