Backport mem::forget to beta #25299
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Backport mem::forget to beta #25299
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This commit is an implementation of [RFC 1066][rfc] where the conclusion was that leaking a value is a safe operation in Rust code, so updating the signature of this function follows suit. [rfc]: https://github.com/rust-lang/rfcs/blob/master/text/1066-safe-mem-forget.md Closes rust-lang#25186
…orrow instead of AsRef Conflicts: src/libcollections/slice.rs src/libcollections/str.rs
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Er actually, I just noticed we have a few
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alexcrichton
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This is the last beta-nominated/beta-accepted we've got listed, so this is the backport of #25187.
r? @brson