Copied from Debian.

From: Andreas Schwab <schwab@linux-m68k.org>
Subject: Initialize the symlink flag
Bug-Debian: http://bugs.debian.org/717029
X-Debian-version: 6.0-10

--- a/process.c
+++ b/process.c
@@ -1758,6 +1758,12 @@
         = (G.crec.general_purpose_bit_flag & (1 << 11)) == (1 << 11);
 #endif
 
+#ifdef SYMLINKS
+    /* Initialize the symlink flag, may be set by the platform-specific
+       mapattr function.  */
+    G.pInfo->symlink = 0;
+#endif
+
     return PK_COOL;
 
 } /* end function process_cdir_file_hdr() */
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<tr><td><span title='2021-09-21 20:35:49 +0000'>2021-09-21</span></td><td><a href='/guix/commit/gnu/installer/keymap.scm?id=d58e52b0713648dd30d41b41277854a935d8d15a'>installer: keymap: Fix optional fields handling.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes: &lt;https://issues.guix.gnu.org/50723&gt;.

The keymap xml contains optional shortDescription and description fields. The
assoc-ref call on those fields can return false, handle it correctly.

* gnu/installer/keymap.scm (xkb-rules-&gt;models+layouts): Introduce a new
"maybe-empty" helper to deal with optional fields. Use it for shortDescription
and description fields.
</span></span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2020-04-09 02:42:54 +0000'>2020-04-09</span></td><td><a href='/guix/commit/gnu/installer/keymap.scm?id=91c231a2223440081426929828a23c7baa0214fd'>installer: Allow Alt+Shift toggle from non-Latin keyboard layouts.</a><span class='msg-avail'>...<span class='msg-tooltip'>Fixes &lt;https://bugs.gnu.org/40493&gt;.

* gnu/installer/newt/keymap.scm (%non-latin-layouts): New variable.
(%non-latin-variants): New variable.
(%latin-layout+variants): New variable.
(toggleable-latin-layout): New procedure to compute combined layouts.
(run-keymap-page): Use it.
(keyboard-layout-&gt;configuration): Apply it in config.scm.
(run-layout-page): Mention Alt+Shift.
* gnu/installer/keymap.scm (kmscon-update-keymap): Pass on XKB options.
* gnu/installer/record.scm (&lt;installer&gt;): Adjust code comments.
* gnu/installer.scm (apply-keymap): Pass on XKB options.
(installer-steps): Adjust code comments.
* gnu/packages/patches/kmscon-runtime-keymap-switch.patch: Apply XKB options.
</span></span></td><td>Florian Pelz</td></tr>
<tr><td><span title='2019-04-17 15:13:31 +0200'>2019-04-17</span></td><td><a href='/guix/commit/gnu/installer/keymap.scm?id=818595a974a3fc9caa7edd8a4f19d5485c91caba'>installer: Parse the 'shortDescription' field from xkeyboard-config.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/installer/keymap.scm (&lt;x11-keymap-layout&gt;)[synopsis]: New field.
(xkb-rules-&gt;models+layouts): Fill out the 'synopsis' field.
</span></span></td><td>Ludovic Courtès</td></tr>