diff --git a/src/test/ui/env-vars.rs b/src/test/ui/env-vars.rs index f73902c40066d..f5035bb2c6985 100644 --- a/src/test/ui/env-vars.rs +++ b/src/test/ui/env-vars.rs @@ -5,6 +5,14 @@ use std::env::*; fn main() { for (k, v) in vars_os() { + // On Windows, the environment variable NUMBER_OF_PROCESSORS has special meaning. + // Unfortunately, you can get different answers, depending on whether you are + // enumerating all environment variables or querying a specific variable. + // This was causing this test to fail on machines with more than 64 processors. + if cfg!(target_os = "windows") && k == "NUMBER_OF_PROCESSORS" { + continue; + } + let v2 = var_os(&k); assert!(v2.as_ref().map(|s| &**s) == Some(&*v), "bad vars->var transition: {:?} {:?} {:?}", k, v, v2);