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+
+OpenBSD_malloc_Linux.c:
+
+ The OpenBSD malloc implementation, ported to Linux. Used only when
+ --enable-openbsd-malloc is passed to the configure script.
+
+eventdns.[ch]
+
+ A fork of Libevent's DNS implementation, used by Tor when Libevent
+ 2.0 or later is not available. Once Libevent 2.0 is required, we
+ should throw this away; it has diverged from evdns.[ch], and is
+ no longer easily mergeable.
+
+ht.h
+
+ An implementation of a hash table in the style of Niels Provos's
+ tree.h. Shared with Libevent.
+
+tinytest.[ch]
+tinydest_demos.c
+tinytest_macros.h
+
+ A unit testing framework. https://github.com/nmathewson/tinytest
+