Tor master (nearly 0.2.3.11-alpha) fails to build on Windows
https://buildbot.torproject.org/tor-master/builders/master-win32/builds/416/steps/shell_3/logs/stdio says
cc1.exe: warnings being treated as errors
dns.c: In function 'purge_expired_resolves':
dns.c:457:9: error: comparison between signed and unsigned integer expressions
dns.c: In function 'dns_resolve_impl':
dns.c:684:3: error: comparison between signed and unsigned integer expressions
dns.c: In function 'assert_all_pending_dns_resolves_ok':
dns.c:852:7: error: comparison between signed and unsigned integer expressions
dns.c: In function 'dns_cancel_pending_resolve':
dns.c:958:5: error: comparison between signed and unsigned integer expressions
These are lines like
tor_assert(pend->conn->_base.s == TOR_INVALID_SOCKET);
Looks related to commit 6e8c2a3e, from work on #4533 (moved).