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x86_64-windows-musl: getaddrinfo cannot resolve a host name (no /etc/resolv.conf on Windows) #46
Description
What happens
On x86_64-windows-musl, a host name does not resolve. A connect by address works.
Measured on 2026-10-02 with tinyhttps (mcpplibs/tinyhttps#23), openkal-llvm-runtime 0.15.2 (openkal-musl 0.19.2), llvm@22.1.8 and mcpp 2026.9.30.2. The program ran under wine on an x86_64 Linux host that does have DNS:
| call | x86_64-windows-musl (wine) | x86_64-linux-gnu / x86_64-linux-musl / aarch64-linux-musl |
|---|---|---|
TCP connect to 3.234.28.4:443 |
ok | ok |
TCP connect to httpbin.org:443 (getaddrinfo) |
fails | ok |
Why, as far as I can tell
openkal has no name-resolution interface. musl's resolver reads /etc/resolv.conf, and a Windows system does not have that file. Library code also cannot fall back on a nameserver of its own, because it has no portable way to find out which nameserver the system uses.
What would help
Either a source of nameservers on Windows, such as an optional openkal interface or openkal-windows answering /etc/resolv.conf from the system's DNS configuration, or a documented statement that name resolution is unavailable on this target.
tinyhttps now documents the limitation (README, "Platforms") and its CI reports "no network" for this target rather than failing.
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