This Some of this blocks the rust upgrade #8446. See rust-lang/rust#29867.

When possible, use std::os::raw instead.

Dependencies likely need to be updated as well:

• angle (Should switch from * deps) https://github.com/ecoal95/angle
• azure https://github.com/servo/rust-azure Update to libc 0.2. rust-azure#206
• block SSheldon/rust-block@45b644f
• cgl https://github.com/servo/cgl-rs#14
• clipboard (Should switch from * deps) Pass XFree param as '*mut _' to avoid c_void conflicts. aweinstock314/rust-clipboard#18 Explicitly depend on libc 0.2 aweinstock314/rust-clipboard#19
• clipboard-win (Should switch from * deps) https://github.com/DoumanAsh/clipboard-win Upgrade to libc 0.2 DoumanAsh/clipboard-win#4
• clock_ticks Says: "Deprecated: Use the time crate instead." https://github.com/tomaka/clock_ticks
• cocoa Upgrade to libc 0.2 cocoa-rs#105
• core-foundation Upgrade to libc 0.2 core-foundation-rs#71
• core-graphics Upgrade to libc 0.2 core-graphics-rs#45
• core-text (Should switch from * deps) https://github.com/servo/core-text-rs
• dlib elinorbgr/dlib@4281e02
• dylib Upgrade to libc 0.2 and Rust 1.4. Kintaro/rust-dylib#3
• egl Upgrade to libc 0.2 rust-egl#17
• energymon / energymon-default-sys / energymon-syshttps://github.com/Upgrade to libc 0.2 energymon/energymon-sys#6
• flate2 rust-lang/flate2-rs@af3c4b9
• fontconfig https://github.com/servo/rust-fontconfig
• freetype https://github.com/servo/rust-freetype
• gl_common (Where’s the source repo? Possibly https://github.com/bjz/gl-rs/ ?) https://crates.io/crates/gl_common
• gleam https://github.com/servo/gleam
• glutin (Done upstream. Is our fork still diverging?) https://github.com/servo/glutin
• glx (should switch from * deps) https://github.com/servo/rust-glx
• harfbuzz-sys https://github.com/servo/rust-harfbuzz
• hbs-common-sys / hbs-pow / hbs-pow-sys Upgrade to libc 0.2 libheartbeats/heartbeats-simple-sys#6
• heapsize Upgrade to libc 0.2 heapsize#18
• io-surface https://github.com/servo/io-surface-rs
• ipc-channel (should switch from * deps) https://github.com/pcwalton/ipc-channel
• js https://github.com/servo/rust-mozjs
• layers Pass XFree param as '*mut _' to avoid c_void conflicts. rust-layers#215
• libz-sys rust-lang/libz-sys@2c14f33
• log rust-lang/log@9b56330
• malloc_buf SSheldon/malloc_buf@047e44f
• memchr BurntSushi/memchr@4b95200
• miniz-sys rust-lang/flate2-rs@af3c4b9
• mmap Upgrade to libc 0.2 rbranson/rust-mmap#6
• mozjs_sys https://github.com/servo/mozjs
• num_cpus Upgrade to libc 0.2 seanmonstar/num_cpus#14
• objc SSheldon/rust-objc@fbb62f8
• objc-foundation SSheldon/rust-objc-foundation@67561e8
• offscreen_gl_context Replace * deps with semver-compatible to current crates.io verison surfman#37
• openssl / openssl-sys sfackler/rust-openssl@309b6d9
• osmesa-sys https://github.com/Daggerbot/osmesa-rs/commit/601b7ceabda25686db1bbedd71431ddcbc207b28
• png Fixed "*" dependencies, fixed some warnings image-rs/image-png#6
• rand rust-random/rand@f32aa2c
• shared_library https://github.com/tomaka/shared_library#1
• skia https://github.com/servo/skia
• stb_image Upgrade to libc 0.2 rust-stb-image#82
• tempfile Upgrade to libc 0.2 Stebalien/tempfile#16
• time time-rs/time@51c0019
• wayland-client WIP: replace libc with std::os::raw Smithay/wayland-rs#25
• waland-kbd Replace libc with std::os::raw. Smithay/wayland-kbd#4
• x11 / x11-dl Update libc to 0.2 AltF02/x11-rs#32