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diff --git a/Utilities/cmlibarchive/libarchive/test/test_compat_xz.c b/Utilities/cmlibarchive/libarchive/test/test_compat_xz.c
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+++ b/Utilities/cmlibarchive/libarchive/test/test_compat_xz.c
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+/*-
+ * Copyright (c) 2009 Michihiro NAKAJIMA
+ * Copyright (c) 2003-2008 Tim Kientzle
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include "test.h"
+__FBSDID("$FreeBSD$");
+
+/*
+ * Verify our ability to read sample files compatibly with unxz.
+ *
+ * In particular:
+ *  * unxz will read multiple xz streams, concatenating the output
+ */
+
+/*
+ * All of the sample files have the same contents; they're just
+ * compressed in different ways.
+ */
+static void
+compat_xz(const char *name)
+{
+    const char *n[7] = { "f1", "f2", "f3", "d1/f1", "d1/f2", "d1/f3", NULL };
+    struct archive_entry *ae;
+    struct archive *a;
+    int i, r;
+
+    assert((a = archive_read_new()) != NULL);
+    assertEqualIntA(a, ARCHIVE_OK, archive_read_support_compression_all(a));
+    r = archive_read_support_compression_xz(a);
+    if (r == ARCHIVE_WARN) {
+        skipping("xz reading not fully supported on this platform");
+        assertEqualInt(ARCHIVE_OK, archive_read_finish(a));
+        return;
+    }
+    assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_all(a));
+    extract_reference_file(name);
+    assertEqualIntA(a, ARCHIVE_OK, archive_read_open_filename(a, name, 2));
+
+    /* Read entries, match up names with list above. */
+    for (i = 0; i < 6; ++i) {
+        failure("Could not read file %d (%s) from %s", i, n[i], name);
+        assertEqualIntA(a, ARCHIVE_OK,
+            archive_read_next_header(a, &ae));
+        assertEqualString(n[i], archive_entry_pathname(ae));
+    }
+
+    /* Verify the end-of-archive. */
+    assertEqualIntA(a, ARCHIVE_EOF, archive_read_next_header(a, &ae));
+
+    /* Verify that the format detection worked. */
+    assertEqualInt(archive_compression(a), ARCHIVE_COMPRESSION_XZ);
+    assertEqualString(archive_compression_name(a), "xz");
+    assertEqualInt(archive_format(a), ARCHIVE_FORMAT_TAR_USTAR);
+
+    assertEqualInt(ARCHIVE_OK, archive_read_close(a));
+    assertEqualInt(ARCHIVE_OK, archive_read_finish(a));
+}
+
+
+DEFINE_TEST(test_compat_xz)
+{
+    compat_xz("test_compat_xz_1.txz");
+}