1 // Automatically detect tsan in a way that's compatible with both stable (which 2 // doesn't support sanitizers) and nightly (which does). Works because build 3 // scripts gets `cfg` info, even if the cfg is unstable. main()4fn main() { 5 println!("cargo:rerun-if-changed=build.rs"); 6 let santizer_list = std::env::var("CARGO_CFG_SANITIZE").unwrap_or_default(); 7 if santizer_list.contains("thread") { 8 println!("cargo:rustc-cfg=tsan_enabled"); 9 } 10 } 11