diff --git a/Lib/test/test_ioctl.py b/Lib/test/test_ioctl.py
index 7fc9c08..51da6a3 100644
--- a/Lib/test/test_ioctl.py
+++ b/Lib/test/test_ioctl.py
@@ -7,9 +7,17 @@
 
 try:
     tty = open("/dev/tty", "r")
-    tty.close()
 except IOError:
     raise unittest.SkipTest("Unable to open /dev/tty")
+else:
+    # Skip if another process is in foreground
+    r = fcntl.ioctl(tty, termios.TIOCGPGRP, "    ")
+    tty.close()
+    rpgrp = struct.unpack("i", r)[0]
+    if rpgrp not in (os.getpgrp(), os.getsid(0)):
+        raise unittest.SkipTest("Neither the process group nor the session "
+                                "are attached to /dev/tty")
+    del tty, r, rpgrp
 
 try:
     import pty
diff --git a/Lib/test/test_urllib2_localnet.py b/Lib/test/test_urllib2_localnet.py
index ef2614b..5d8a484 100644
--- a/Lib/test/test_urllib2_localnet.py
+++ b/Lib/test/test_urllib2_localnet.py
@@ -501,6 +501,30 @@
                           # parameterize the framework with a mock resolver.
                           urllib2.urlopen, "http://sadflkjsasf.i.nvali.d./")
 
+    def test_iteration(self):
+        expected_response = "pycon 2008..."
+        handler = self.start_server([(200, [], expected_response)])
+        try:
+            data = urllib2.urlopen("http://localhost:%s" % handler.port)
+            for line in data:
+                self.assertEqual(line, expected_response)
+        finally:
+            self.server.stop()
+
+    def ztest_line_iteration(self):
+        lines = ["We\n", "got\n", "here\n", "verylong " * 8192 + "\n"]
+        expected_response = "".join(lines)
+        handler = self.start_server([(200, [], expected_response)])
+        try:
+            data = urllib2.urlopen("http://localhost:%s" % handler.port)
+            for index, line in enumerate(data):
+                self.assertEqual(line, lines[index],
+                                 "Fetched line number %s doesn't match expected:\n"
+                                 "    Expected length was %s, got %s" %
+                                 (index, len(lines[index]), len(line)))
+        finally:
+            self.server.stop()
+        self.assertEqual(index + 1, len(lines))
 
 def test_main():
     # We will NOT depend on the network resource flag
diff --git a/Misc/NEWS b/Misc/NEWS
index db878aa..bf86216 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,9 @@
 Core and Builtins
 -----------------
 
+- Issue #8530: Prevent stringlib fastsearch from reading beyond the front
+  of an array.
+
 - Issue #83755:  Implicit set-to-frozenset conversion was not thread-safe.
 
 - Issue #9416: Fix some issues with complex formatting where the
@@ -203,6 +206,8 @@
 Tests
 -----
 
+- Issue #7564: Skip test_ioctl if another process is attached to /dev/tty.
+
 - Issue #8433: Fix test_curses failure with newer versions of ncurses.
 
 - Issue #9496: Provide a test suite for the rlcompleter module.  Patch by
diff --git a/Objects/stringlib/fastsearch.h b/Objects/stringlib/fastsearch.h
index 7525951..e231c58 100644
--- a/Objects/stringlib/fastsearch.h
+++ b/Objects/stringlib/fastsearch.h
@@ -140,13 +140,13 @@
                     /* got a match! */
                     return i;
                 /* miss: check if previous character is part of pattern */
-                if (!STRINGLIB_BLOOM(mask, s[i-1]))
+                if (i > 0 && !STRINGLIB_BLOOM(mask, s[i-1]))
                     i = i - m;
                 else
                     i = i - skip;
             } else {
                 /* skip: check if previous character is part of pattern */
-                if (!STRINGLIB_BLOOM(mask, s[i-1]))
+                if (i > 0 && !STRINGLIB_BLOOM(mask, s[i-1]))
                     i = i - m;
             }
         }
diff --git a/Tools/scripts/2to3 b/Tools/scripts/2to3
index 2a447cf..fbd4aa6 100755
--- a/Tools/scripts/2to3
+++ b/Tools/scripts/2to3
@@ -1,6 +1,5 @@
 #!/usr/bin/env python
-from lib2to3.main import main
 import sys
-import os
+from lib2to3.main import main
 
 sys.exit(main("lib2to3.fixes"))