Dylan DPC 772582e19e Rollup merge of #83374 - reyk:fix/bsd-ancillary, r=joshtriplett ... unix: Fix feature(unix_socket_ancillary_data) on macos and other BSDs This adds support for CMSG handling on macOS and fixes it on OpenBSD and possibly other BSDs. When traversing the CMSG list, the previous code had an exception for Android where the next element after the last pointer could point to the first pointer instead of NULL. This is actually not specific to Android: the `libc::CMSG_NXTHDR` implementation for Linux and emscripten have a special case to return NULL when the length of the previous element is zero; most other implementations simply return the previous element plus a zero offset in this case. This MR makes the check non-optional which fixes CMSG handling and a possible endless loop on such systems; tested with file descriptor passing on OpenBSD, Linux, and macOS. This MR additionally adds `SocketAncillary::is_empty` because clippy is right that it should be added. This belongs to the `feature(unix_socket_ancillary_data)` tracking issue: https://github.com/rust-lang/rust/issues/76915 r? `@joshtriplett`		2021-03-30 00:32:21 +02:00
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hermit	Rollup merge of #83353 - m-ou-se:io-error-avoid-alloc, r=nagisa	2021-03-24 01:52:29 +01:00
sgx	Auto merge of #83387 - cuviper:min-llvm-10, r=nagisa	2021-03-25 13:11:18 +00:00
unix	Rollup merge of #83374 - reyk:fix/bsd-ancillary, r=joshtriplett	2021-03-30 00:32:21 +02:00
unsupported	Use io::Error::new_const everywhere to avoid allocations.	2021-03-21 20:22:38 +01:00
vxworks	Use io::Error::new_const everywhere to avoid allocations.	2021-03-21 20:22:38 +01:00
wasi	Use DebugStruct::finish_non_exhaustive() in std.	2021-03-27 13:29:23 +01:00
wasm	sys: use process::abort() instead of arch::wasm32::unreachable()	2021-01-29 20:25:23 +01:00
windows	Use io::Error::new_const everywhere to avoid allocations.	2021-03-21 20:22:38 +01:00
mod.rs	Rollup merge of #82686 - CDirkx:unix-platform, r=m-ou-se	2021-03-22 02:20:28 +01:00