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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;

uts]: Add PKG-CONFIG. [inputs]: Add GRAPHITE2. (rust-tectonic-bundles): Update to 0.3. [arguments]: Do not skip build. <#:cargo-inputs>: Update RUST-TECTONIC-IO-BASE to 0.4. [native-inputs]: Add PKG-CONFIG. [inputs]: Add OPENSSL and ZLIB. (rust-tectonic-docmodel): Update to 0.2.0. [arguments]: Do not skip build. (rust-tectonic-engine-xetex): Update to 0.4.1. [arguments]: Do not skip build. <#:cargo-inputs>: Update RUST-TECTONIC-PDF-IO to 0.4 and RUST-TECTONIC-XETEX-LAYOUT to 0.2. [native-inputs]: Add PKG-CONFIG. [inputs]: Add FONTCONFIG, FREETYPE, GRAPHITE2, ICU4C and ZLIB. (rust-tectonic-engine-xdvipdfmx): Update to 0.4.0. [arguments]: Do not skip build. <#:cargo-inputs>: Remove RUST-CBINDGEN, update RUST-TECTONIC-BRIDGE-CORE to 0.3 and RUST-TECTONIC-PDF-IO to 0.4. [native-inputs]: Add PKG-CONFIG. [inputs]: Add LIBPNG and ZLIB. (rust-tectonic-pdf-io): Update to 0.4. [arguments]: Do not skip build. <#:cargo-inputs>: Update RUST-TECTONIC-BRIDGE-CORE to 0.3. (rust-tectonic-xetex-layout): Update to 0.2.1. [arguments]: Do not skip build. <#:cargo-inputs>: Update RUST-TECTONIC-BRIDGE-CORE to 0.3. [native-inputs]: Add PKG-CONFIG. [inputs]: Add FONTCONFIG, FREETYPE, GRAPHITE2, ICU4C and ZLIB. Nicolas Goaziou 2022-12-09gnu: Add htmlq....Greg Hogan 2022-11-30gnu: rust-svd-parser-0.9: Rename to rust-svd-parser-0.10....Efraim Flashner 2022-11-30gnu: crates-io: Resort some unsorted packages....Efraim Flashner 2022-11-30gnu: gnuzilla.scm: Move rust packages to standard locations....Efraim Flashner 2022-11-27gnu: zoxide: Update to 0.8.3....( 2022-11-28gnu: Add swayr....Nicolas Graves 2022-11-28Revert "gnu: Add swayr."...Andrew Tropin 2022-11-28gnu: Add swayr....Nicolas Goaziou 2022-10-24gnu: rust-cargo-edit: Update to 0.10.4....Efraim Flashner 2022-10-24gnu: rust-cargo-edit: Add missing inputs....Efraim Flashner 2022-10-24gnu: rust-cargo-edit: Rename from rust-cargo-edit-0.8....Efraim Flashner 2022-10-24gnu: rust-cargo-edit-0.8: Move to rust-apps.scm....Efraim Flashner 2022-10-24gnu: rust-swc: Add missing inputs....Efraim Flashner 2022-10-24gnu: rust-swc: Rename from rust-swc-1....Efraim Flashner 2022-10-24gnu: rust-swc-1: Move to rust-apps....Efraim Flashner 2022-10-22gnu: git-interactive-rebase-tool: Fix build....Efraim Flashner 2022-10-22gnu: git-absorb: Fix build....Efraim Flashner 2022-09-28gnu: exa: Only build with pandoc when supported....Efraim Flashner 2022-09-28gnu: exa: Don't install source....Efraim Flashner 2022-09-28gnu: exa: Update to 0.10.1....gyara 2022-09-24gnu: Add rot8....M 2022-09-09gnu: Explicitly use OpenSSL 1.1 in more packages....Marius Bakke 2022-09-05gnu: Add rust-cbindgen-0.17....Ricardo Wurmus 2022-09-01gnu: Add treefmt....Gabriel Arazas