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Yukihiro "Matz" Matsumoto
57ca531f76
Addrinfo.getaddrinfo("localhost", ...) and Addrinfo.foreach("localhost",
...) crash on GitHub Actions Windows runners (Windows Server 2022 and
2025, both mingw-gcc and MSVC). Diagnostic showed 127.0.0.1 as a
numeric literal resolves fine via Winsock getaddrinfo, but "localhost"
as a hostname returns WSAHOST_NOT_FOUND under every address family
(AF_INET, AF_INET6, AF_UNSPEC, nil). PowerShell Resolve-DnsName on
the same runner succeeds, so the failure is Winsock-specific rather
than OS-level. Earlier workarounds (Dnscache service start, hosts
file append) had no effect.
Skip both tests on Windows with the existing SocketTest.win? guard,
matching the pattern already used for Addrinfo.unix and
Addrinfo#afamily. Linux and macOS coverage is unaffected.
Co-authored-by: Claude <noreply@anthropic.com>