7zip: add malformed SubStreamsInfo test

Add a 7z regression test for malformed SubStreamsInfo metadata that
declares more than one unpack stream without the kSize data needed to
describe those streams.

Store the archive as a .7z.uu file, matching the existing malformed
7z tests.

Author: datauwu

Makefile.am

@@ -881,6 +881,7 @@ libarchive_test_EXTRA_DIST=\
 	libarchive/test/test_read_format_7zip_malformed.7z.uu \
 	libarchive/test/test_read_format_7zip_malformed2.7z.uu \
 	libarchive/test/test_read_format_7zip_malformed3.7z.uu \
+	libarchive/test/test_read_format_7zip_malformed4.7z.uu \
 	libarchive/test/test_read_format_7zip_packinfo_digests.7z.uu \
 	libarchive/test/test_read_format_7zip_ppmd.7z.uu \
 	libarchive/test/test_read_format_7zip_sfx_elf.elf.uu \

libarchive/test/test_read_format_7zip_malformed.c

@@ -75,9 +75,28 @@ test_malformed3(void)
 	assertEqualInt(ARCHIVE_OK, archive_read_free(a));
 }
 
+
+static void
+test_malformed4(void)
+{
+	const char *refname = "test_read_format_7zip_malformed4.7z";
+	struct archive *a;
+	struct archive_entry *ae;
+
+	extract_reference_file(refname);
+
+	assert((a = archive_read_new()) != NULL);
+	assertEqualIntA(a, ARCHIVE_OK, archive_read_support_filter_all(a));
+	assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_all(a));
+	assertEqualIntA(a, ARCHIVE_OK, archive_read_open_filename(a, refname, 10240));
+	assertEqualIntA(a, ARCHIVE_FATAL, archive_read_next_header(a, &ae));
+	assertEqualInt(ARCHIVE_OK, archive_read_free(a));
+}
+
 DEFINE_TEST(test_read_format_7zip_malformed)
 {
 	test_malformed1();
 	test_malformed2();
 	test_malformed3();
+	test_malformed4();
 }

libarchive/test/test_read_format_7zip_malformed4.7z.uu

@@ -0,0 +1,5 @@
+begin 644 test_read_format_7zip_malformed4.7z
+M-WJ\KR<<``0N^]EU```````````9`````````&WKXL4!!`8``0D```<+`0`!
+,`0`,```(#0(`````
+`
+end