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Ensure Send/Sync is not implemented for std::env::Vars{,Os} #155153

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Merged
rust-bors merged 1 commit into from
Jun 11, 2026
Merged

Ensure Send/Sync is not implemented for std::env::Vars{,Os} #155153

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6 changes: 6 additions & 0 deletions library/std/src/env.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -101,6 +101,12 @@ pub struct VarsOs {
inner: env_imp::Env,
}

#[stable(feature = "env_vars_unimpl_send_sync", since = "CURRENT_RUSTC_VERSION")]
impl !Send for VarsOs {}

#[stable(feature = "env_vars_unimpl_send_sync", since = "CURRENT_RUSTC_VERSION")]
impl !Sync for VarsOs {}

/// Returns an iterator of (variable, value) pairs of strings, for all the
/// environment variables of the current process.
///
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3 changes: 0 additions & 3 deletions library/std/src/sys/env/common.rs
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Expand Up @@ -17,9 +17,6 @@ impl fmt::Debug for Env {
}
}

impl !Send for Env {}
impl !Sync for Env {}

impl Iterator for Env {
type Item = (OsString, OsString);
fn next(&mut self) -> Option<(OsString, OsString)> {
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