// ignore-windows // aux-build:cfg-target-thread-local.rs #![feature(thread_local)] extern crate cfg_target_thread_local; extern "C" { #[cfg_attr(target_thread_local, thread_local)] //~^ `cfg(target_thread_local)` is experimental and subject to change static FOO: u32; } fn main() { assert_eq!(FOO, 3); //~^ ERROR extern static is unsafe }