unlzma: fix segfault on bad archive

function                                             old     new   delta
unpack_lzma_stream                                  2647    2653      +6

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

3 files changed, 21 insertions, 0 deletions

diff --git a/testsuite/unlzma.tests b/testsuite/unlzma.tests
new file mode 100755
index 000000000..0e98afe09
--- /dev/null
+++ b/testsuite/unlzma.tests
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+. ./testing.sh
+
+# testing "test name" "commands" "expected result" "file input" "stdin"
+#   file input will be file called "input"
+#   test can create a file "actual" instead of writing to stdout
+
+# Damaged encrypted streams
+testing "unlzma (bad archive 1)" \
+	"unlzma <unlzma_issue_1.lzma >/dev/null; echo \$?" \
+"1
+" "" ""
+
+# Damaged encrypted streams
+testing "unlzma (bad archive 2)" \
+	"unlzma <unlzma_issue_2.lzma >/dev/null; echo \$?" \
+"1
+" "" ""
+
+exit $FAILCOUNT
diff --git a/testsuite/unlzma_issue_1.lzma b/testsuite/unlzma_issue_1.lzma
new file mode 100644
index 000000000..fb70104ba
--- /dev/null
+++ b/testsuite/unlzma_issue_1.lzma
diff --git a/testsuite/unlzma_issue_2.lzma b/testsuite/unlzma_issue_2.lzma
new file mode 100644
index 000000000..853f0fc29
--- /dev/null
+++ b/testsuite/unlzma_issue_2.lzma