Fixes this buffer overflow:
https://github.com/libarchive/libarchive/commit/e37b620fe8f14535d737e89a4dcabaed4517bf1a

Patch copied from upstream source repository:
https://github.com/libarchive/libarchive/commit/e37b620fe8f14535d737e89a4dcabaed4517bf1a

From e37b620fe8f14535d737e89a4dcabaed4517bf1a Mon Sep 17 00:00:00 2001
From: Tim Kientzle <kientzle@acm.org>
Date: Sun, 21 Aug 2016 10:51:43 -0700
Subject: [PATCH] Issue #767:  Buffer overflow printing a filename

The safe_fprintf function attempts to ensure clean output for an
arbitrary sequence of bytes by doing a trial conversion of the
multibyte characters to wide characters -- if the resulting wide
character is printable then we pass through the corresponding bytes
unaltered, otherwise, we convert them to C-style ASCII escapes.

The stack trace in Issue #767 suggest that the 20-byte buffer
was getting overflowed trying to format a non-printable multibyte
character.  This should only happen if there is a valid multibyte
character of more than 5 bytes that was unprintable.  (Each byte
would get expanded to a four-charcter octal-style escape of the form
"\123" resulting in >20 characters for the >5 byte multibyte character.)

I've not been able to reproduce this, but have expanded the conversion
buffer to 128 bytes on the belief that no multibyte character set
has a single character of more than 32 bytes.
---
 tar/util.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tar/util.c b/tar/util.c
index 9ff22f2..2b4aebe 100644
--- a/tar/util.c
+++ b/tar/util.c
@@ -182,7 +182,7 @@ safe_fprintf(FILE *f, const char *fmt, ...)
 		}
 
 		/* If our output buffer is full, dump it and keep going. */
-		if (i > (sizeof(outbuff) - 20)) {
+		if (i > (sizeof(outbuff) - 128)) {
 			outbuff[i] = '\0';
 			fprintf(f, "%s", outbuff);
 			i = 0;
ange</option>
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</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=4748a62a948cac21b374c8201369b92e2d51ca19'>root</a>/<a href='/guix/log/etc?id=4748a62a948cac21b374c8201369b92e2d51ca19'>etc</a>/<a href='/guix/log/etc/guix-daemon.cil.in?id=4748a62a948cac21b374c8201369b92e2d51ca19'>guix-daemon.cil.in</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/guix-daemon.cil.in?id=4748a62a948cac21b374c8201369b92e2d51ca19&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2019-09-08 11:49:25 +0200'>2019-09-08</span></td><td><a href='/guix/commit/etc/guix-daemon.cil.in?id=cc98b00857e29074de96a6ed60e325cdfffaea1a'>etc: Remove references to libexec/guix* from SELinux policy.</a><span class='msg-avail'>...<span class='msg-tooltip'>* etc/guix-daemon.cil.in: Remove references to libexec/guix*.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-02-07 15:41:23 +0100'>2018-02-07</span></td><td><a href='/guix/commit/etc/guix-daemon.cil.in?id=b617a9fe239ea645c816d6afcb81d5476f760d84'>etc: Add SELinux policy for the daemon.</a><span class='msg-avail'>...<span class='msg-tooltip'>* etc/guix-daemon.cil.in: New file.
* Makefile.am (dist_selinux_policy_DATA): Define it.
* configure.ac: Handle --with-selinux-policy-dir.
* doc/guix.texi (SELinux Support): New section.
</span></span></td><td>Ricardo Wurmus</td></tr>