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// tests that input to a macro is checked for use of gated features. If this // test succeeds due to the acceptance of a feature, pick a new feature to // test. Not ideal, but oh well :( fn main() {
let a = &[1, 2, 3];
println!("{}", { extern "rust-intrinsic" { //~ ERROR intrinsics are subject to change fn atomic_fence(); } atomic_fence(); 42 }); }