[lbzip2] Add patch to fix sefgault during decompression

[Mikolaj Izdebski]

commit 0f062caabd991320d141497ef818819c7ab5883f
Author: Mikolaj Izdebski <mizdebsk at redhat.com>
Date:   Sun Oct 27 13:19:02 2013 +0100

    Add patch to fix sefgault during decompression
    
    - Resolves: rhbz#1017957

 lbzip2-rhbz1017957.patch |   18 ++++++++++++++++++
 lbzip2.spec              |    9 ++++++++-
 2 files changed, 26 insertions(+), 1 deletions(-)
---
diff --git a/lbzip2-rhbz1017957.patch b/lbzip2-rhbz1017957.patch
new file mode 100644
index 0000000..0aa1707
--- /dev/null
+++ b/lbzip2-rhbz1017957.patch
@@ -0,0 +1,18 @@
+--- src/decode.c
++++ src/decode.c
+@@ -250,12 +250,12 @@ make_tree(struct retriever_internal_state *rs)
+      greater than the greatest possible left-justified base).
+    */
+   assert(k == MAX_CODE_LENGTH + 1);
+-  k = MAX_CODE_LENGTH;
+-  while (C[k] == 0) {
++  do {
+     assert(k > MIN_CODE_LENGTH);
+-    assert(B[k] == 0);
++    assert(k > MAX_CODE_LENGTH || B[k] == 0);
+     B[k--] = -1;
+   }
++  while (C[k] == 0);
+ 
+   /* Transform counts into indices (cumulative counts). */
+   cum = 0;
diff --git a/lbzip2.spec b/lbzip2.spec
index 38ca6ed..8808927 100644
--- a/lbzip2.spec
+++ b/lbzip2.spec
@@ -1,11 +1,13 @@
 Name:           lbzip2
 Version:        2.3
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Fast, multi-threaded bzip2 utility
 Group:          Applications/File
 License:        GPLv3+
 URL:            https://github.com/kjn/lbzip2
 Source0:        https://github.com/downloads/kjn/%{name}/%{name}-%{version}.tar.gz
+# From upstream commit afeccb9, resolves rhbz#1017957
+Patch0:         %{name}-rhbz1017957.patch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 
@@ -17,6 +19,7 @@ decompressor.
 
 %prep
 %setup -q
+%patch0
 
 
 %build
@@ -49,6 +52,10 @@ rm -rf %{buildroot}
 
 
 %changelog
+* Sun Oct 27 2013 Mikolaj Izdebski <mizdebsk at redhat.com> - 2.3-2
+- Add patch to fix sefgault during decompression
+- Resolves: rhbz#1017957
+
 * Tue Oct 15 2013 Lukas Zapletal <lzap+rpm[@]redhat.com> - 2.3-1
 - Version bump