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2019-02-28libstd => 2018Taiki Endo-3/+3
2018-12-25Remove licensesMark Rousskov-10/+0
2017-11-08std: Remove `rand` crate and moduleAlex Crichton-36/+10
This commit removes the `rand` crate from the standard library facade as well as the `__rand` module in the standard library. Neither of these were used in any meaningful way in the standard library itself. The only need for randomness in libstd is to initialize the thread-local keys of a `HashMap`, and that unconditionally used `OsRng` defined in the standard library anyway. The cruft of the `rand` crate and the extra `rand` support in the standard library makes libstd slightly more difficult to port to new platforms, namely WebAssembly which doesn't have any randomness at all (without interfacing with JS). The purpose of this commit is to clarify and streamline randomness in libstd, focusing on how it's only required in one location, hashmap seeds. Note that the `rand` crate out of tree has almost always been a drop-in replacement for the `rand` crate in-tree, so any usage (accidental or purposeful) of the crate in-tree should switch to the `rand` crate on crates.io. This then also has the further benefit of avoiding duplication (mostly) between the two crates!
2017-10-18std: Update randomness implementation on WindowsAlex Crichton-31/+7
This commit updates the OS random number generator on Windows to match the upstream implementation in the `rand` crate. First proposed in rust-lang-nursery/rand#111 this implementation uses a "private" API of `RtlGenRandom`. Despite the [documentation][dox] indicating this is a private function its widespread use in Chromium and Firefox as well as [comments] from Microsoft internally indicates that it's highly unlikely to break. Another motivation for switching this is to also attempt to make progress on #44911. It may be the case that this function succeeds while the previous implementation may fail in "weird" scenarios. [dox]: https://msdn.microsoft.com/en-us/library/windows/desktop/aa387694(v=vs.85).aspx [comments]: https://github.com/rust-lang-nursery/rand/issues/111#issuecomment-316140155
2016-02-25rand: Fix filling buffers 4 GiB or larger with OsRng::fill_bytes on WindowsOliver Middleton-7/+11
CryptGenRandom takes a DWORD (u32) for the length so it only supports writing u32::MAX bytes at a time. Casting the length from a usize caused truncation meaning the whole buffer was not always filled.
2016-02-17std: restructure rand os code into sys modulesSean McArthur-0/+72