Copied from Debian.

From: Kamil Dudka <kdudka@redhat.com>
Date: Mon, 14 Sep 2015 18:24:56 +0200
Subject: fix infinite loop when extracting empty bzip2 data
Bug-Debian: https://bugs.debian.org/802160
Bug-RedHat: https://bugzilla.redhat.com/show_bug.cgi?id=1260944
Origin: other, https://bugzilla.redhat.com/attachment.cgi?id=1073339

---
 extract.c | 6 ++++++
 1 file changed, 6 insertions(+)

--- a/extract.c
+++ b/extract.c
@@ -2728,6 +2728,12 @@
     int repeated_buf_err;
     bz_stream bstrm;
 
+    if (G.incnt <= 0 && G.csize <= 0L) {
+        /* avoid an infinite loop */
+        Trace((stderr, "UZbunzip2() got empty input\n"));
+        return 2;
+    }
+
 #if (defined(DLL) && !defined(NO_SLIDE_REDIR))
     if (G.redirect_slide)
         wsize = G.redirect_size, redirSlide = G.redirect_buffer;
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<tr><td><span title='2022-12-13 13:42:12 +0000'>2022-12-13</span></td><td><a href='/guix/commit/gnu/packages/mercury.scm?id=87638cdd48ccf9537e3e5bcc8156df7a38c1e54a'>gnu: mercury: Update to 22.01.4.</a></td><td>jgart</td></tr>
<tr><td><span title='2022-12-13 13:42:12 +0000'>2022-12-13</span></td><td><a href='/guix/commit/gnu/packages/mercury.scm?id=1810d67ad46355d299f0b9bf6cca6056ecaffa4d'>gnu: mercury-minimal: Update to 22.01.4.</a></td><td>jgart</td></tr>
<tr><td><span title='2022-04-27 22:34:35 -0400'>2022-04-27</span></td><td><a href='/guix/commit/gnu/packages/mercury.scm?id=f1d08be7af45d436fa2e8373bad50aa8c5401050'>gnu: mercury: Selectively import match-lambda from ice9 module.</a></td><td>jgart</td></tr>
<tr><td><span title='2022-03-29 11:17:46 +0200'>2022-03-29</span></td><td><a href='/guix/commit/gnu/packages/mercury.scm?id=779acb0ba1067b27d9ae32d0e4f9ad525bcda213'>gnu: mercury: Remove trailing #T from phases and snippet.</a></td><td>jgart</td></tr>
<tr><td><span title='2021-12-13 17:48:25 +0100'>2021-12-13</span></td><td><a href='/guix/commit/gnu/packages/mercury.scm?id=8394619baceb118df92e355377fd543bb1aa501a'>gnu: Simplify package inputs.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-11-25 16:40:29 -0600'>2020-11-25</span></td><td><a href='/guix/commit/gnu/packages/mercury.scm?id=8b928a3931cafddb291152bc259b634ab3ab441b'>gnu: mercury: Update to 20.06.1.</a></td><td>Brett Gilio</td></tr>
<tr><td><span title='2020-11-25 16:40:01 -0600'>2020-11-25</span></td><td><a href='/guix/commit/gnu/packages/mercury.scm?id=4b4fa892cb0fbb98af4606c7a1d55aa09d3eb715'>gnu: mercury-minimal: Update to 20.06.1.</a></td><td>Brett Gilio</td></tr>