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Fix src/test/ui/env-vars.rs on 128-core machines on Windows #79685

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Dec 5, 2020
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Fix src/test/ui/env-vars.rs on 128-core machines on Windows #79685

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8 changes: 8 additions & 0 deletions src/test/ui/env-vars.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -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);
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