Promotion and const interning comments #75517
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| // However, this is also currently crucial because we promote mutable | ||
| // non-empty slices in statics to extend their lifetime, and this | ||
| // ensures that they are put into a mutable allocation. | ||
| // For other kinds of promoteds in statics (like array initializers), this is rather silly. |
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Now you had me worried if I can put mutable references in array initializers, but no:
#![feature(const_in_array_repeat_expressions)]
static mut FOO: [&mut i32; 3] = [&mut 42; 3];fails to compile
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Rollup of 17 pull requests Successful merges: - rust-lang#73943 (Document the unsafe keyword) - rust-lang#74062 (deny(unsafe_op_in_unsafe_fn) in libstd/ffi/c_str.rs) - rust-lang#74185 (Remove liballoc unneeded explicit link) - rust-lang#74192 (Improve documentation on process::Child.std* fields) - rust-lang#74409 (Change Debug impl of SocketAddr and IpAddr to match their Display output) - rust-lang#75195 (BTreeMap: purge innocent use of into_kv_mut) - rust-lang#75214 (Use intra-doc links in `mem::manually_drop` & `mem::maybe_uninit`) - rust-lang#75432 (Switch to intra-doc links in `std::process`) - rust-lang#75482 (Clean up E0752 explanation) - rust-lang#75501 (Move to intra doc links in std::ffi) - rust-lang#75509 (Tweak suggestion for `this` -> `self`) - rust-lang#75511 (Do not emit E0228 when it is implied by E0106) - rust-lang#75515 (Bump std's libc version to 0.2.74) - rust-lang#75517 (Promotion and const interning comments) - rust-lang#75519 (BTreeMap: refactor splitpoint and move testing over to unit test) - rust-lang#75530 (Switch to intra-doc links in os/raw/*.md) - rust-lang#75531 (Migrate unit tests of btree collections to their native breeding ground) Failed merges: r? @ghost
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I understood some things today which I felt should be put into comments.
Cc @rust-lang/wg-const-eval