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Add a 1.45 release note on lto vs. embed-bitcode

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Josh Stone 2020-07-15 10:27:51 -07:00
parent 7e11379f3b
commit 2ba58f9823
1 changed files with 10 additions and 0 deletions
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RELEASES.md
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@ -82,6 +82,9 @@ Stabilized APIs
Cargo Cargo
----- -----
- [Cargo uses the `embed-bitcode` flag to optimize disk usage and build
time.][cargo/8066]
Misc Misc
---- ----
- [Rustdoc now supports strikethrough text in Markdown.][71928] E.g. - [Rustdoc now supports strikethrough text in Markdown.][71928] E.g.
@ -97,12 +100,18 @@ Compatibility Notes
- [Rustdoc's CLI's extra error exit codes have been removed.][71900] These were - [Rustdoc's CLI's extra error exit codes have been removed.][71900] These were
previously undocumented and not intended for public use. Rustdoc still provides previously undocumented and not intended for public use. Rustdoc still provides
a non-zero exit code on errors. a non-zero exit code on errors.
- [Rustc's `lto` flag is incompatible with the new `embed-bitcode=no`.][71848]
This may cause issues if LTO is enabled through `RUSTFLAGS` or `cargo rustc`
flags while cargo is adding `embed-bitcode` itself. The recommended way to
control LTO is with Cargo profiles, either in `Cargo.toml` or `.cargo/config`,
or by setting `CARGO_PROFILE_<name>_LTO` in the environment.
Internals Only Internals Only
-------------- --------------
- [Make clippy a git subtree instead of a git submodule][70655] - [Make clippy a git subtree instead of a git submodule][70655]
- [Unify the undo log of all snapshot types][69464] - [Unify the undo log of all snapshot types][69464]
[71848]: https://github.com/rust-lang/rust/issues/71848/
[73420]: https://github.com/rust-lang/rust/issues/73420/ [73420]: https://github.com/rust-lang/rust/issues/73420/
[72324]: https://github.com/rust-lang/rust/pull/72324/ [72324]: https://github.com/rust-lang/rust/pull/72324/
[71843]: https://github.com/rust-lang/rust/pull/71843/ [71843]: https://github.com/rust-lang/rust/pull/71843/
@ -129,6 +138,7 @@ Internals Only
[69813]: https://github.com/rust-lang/rust/pull/69813/ [69813]: https://github.com/rust-lang/rust/pull/69813/
[69464]: https://github.com/rust-lang/rust/pull/69464/ [69464]: https://github.com/rust-lang/rust/pull/69464/
[68717]: https://github.com/rust-lang/rust/pull/68717/ [68717]: https://github.com/rust-lang/rust/pull/68717/
[cargo/8066]: https://github.com/rust-lang/cargo/pull/8066
[`Arc::as_ptr`]: https://doc.rust-lang.org/stable/std/sync/struct.Arc.html#method.as_ptr [`Arc::as_ptr`]: https://doc.rust-lang.org/stable/std/sync/struct.Arc.html#method.as_ptr
[`BTreeMap::remove_entry`]: https://doc.rust-lang.org/stable/std/collections/struct.BTreeMap.html#method.remove_entry [`BTreeMap::remove_entry`]: https://doc.rust-lang.org/stable/std/collections/struct.BTreeMap.html#method.remove_entry
[`Rc::as_ptr`]: https://doc.rust-lang.org/stable/std/rc/struct.Rc.html#method.as_ptr [`Rc::as_ptr`]: https://doc.rust-lang.org/stable/std/rc/struct.Rc.html#method.as_ptr