The `std::os::unix` module is stubbed out when building docs for these
target platforms. The introduction of Linux-specific extension traits
caused `std::os::net` to depend on sub-modules of `std::os::unix`,
which broke rustdoc for the `wasm32-unknown-unknown` target.
Adding an additional `#[cfg]` guard solves that rustdoc failure by
not declaring `linux_ext` on targets with a stubbed `std::os::unix`.
//! OS-specific networking functionality.
+// See cfg macros in `library/std/src/os/mod.rs` for why these platforms must
+// be special-cased during rustdoc generation.
+#[cfg(not(all(
+ doc,
+ any(
+ all(target_arch = "wasm32", not(target_os = "wasi")),
+ all(target_vendor = "fortanix", target_env = "sgx")
+ )
+)))]
#[cfg(any(target_os = "linux", target_os = "android", doc))]
pub(super) mod linux_ext;