Introduce move expressions (`move($expr)`) by TaKO8Ki · Pull Request #155023 · rust-lang/rust

TaKO8Ki · 2026-04-09T02:53:10Z

This is an experimental first version of move expressions.

This first version implements it just in plain closures. A support for coroutine closures will be added in follow up pull requests.

RFC: will be added later
Tracking issue: #155050
Project goal:

r? @nikomatsakis

rustbot · 2026-04-16T12:26:16Z

Some changes occurred in src/tools/clippy

cc @rust-lang/clippy

The parser was modified, potentially altering the grammar of (stable) Rust
which would be a breaking change.

cc @fmease

Some changes occurred in src/tools/rustfmt

cc @rust-lang/rustfmt

@nikomatsakis

Introduce move expressions (`move($expr)`) This is an experimental first version of move expressions. This first version implements it just in plain closures. A support for coroutine closures will be added in follow up pull requests. RFC: will be added later Tracking issue: #155050 Project goal: - rust-lang/goals#107 - https://rust-lang.github.io/rust-project-goals/2026/ergonomic-rc.html r? @nikomatsakis

rust-bors · 2026-05-11T15:01:09Z

💔 Test for 0a3949b failed: CI. Failed job:

auto - pr-check-2 (web logs, enhanced plaintext logs)

TaKO8Ki · 2026-05-11T15:10:50Z

@bors retry

@nikomatsakis

Introduce move expressions (`move($expr)`) This is an experimental first version of move expressions. This first version implements it just in plain closures. A support for coroutine closures will be added in follow up pull requests. RFC: will be added later Tracking issue: #155050 Project goal: - rust-lang/goals#107 - https://rust-lang.github.io/rust-project-goals/2026/ergonomic-rc.html r? @nikomatsakis

rust-log-analyzer · 2026-05-11T16:01:42Z

A job failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

rust-bors · 2026-05-11T16:31:46Z

💔 Test for e21651e failed: CI. Failed job:

auto - x86_64-gnu-llvm-21-1 (web logs, enhanced plaintext logs)

RalfJung · 2026-05-11T17:06:23Z

@bors retry The push refers to repository [ghcr.io/rust-lang/rust-ci] ... received unexpected HTTP status: 502 Bad Gateway

rust-log-analyzer · 2026-05-11T17:27:03Z

The job x86_64-gnu-llvm-21-1 failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

test expr_store::scope::tests::test_resolve_local_name ... ok
test expr_store::tests::body::array_element_cfg ... ok
test expr_store::tests::body::block::inner_item_smoke ... ok
test expr_store::scope::tests::while_let_adds_binding ... ok
error: test failed, to rerun pass `-p hir-def --lib`

Caused by:
  process didn't exit successfully: `/checkout/obj/build/x86_64-unknown-linux-gnu/stage2-tools/x86_64-unknown-linux-gnu/release/deps/hir_def-f381e8bd2208ec8b '--skip=tests::smoke_test_real_sysroot_cargo' --skip=check_code_formatting -Z unstable-options --format json` (signal: 11, SIGSEGV: invalid memory reference)
Bootstrap failed while executing `--stage 2 test --skip tests --skip coverage-map --skip coverage-run --skip library --skip tidyselftest`
Build completed unsuccessfully in 1:10:34
  local time: Mon May 11 16:30:31 UTC 2026
  network time: Mon, 11 May 2026 16:30:31 GMT
##[error]Process completed with exit code 1.

@nikomatsakis

Introduce move expressions (`move($expr)`) This is an experimental first version of move expressions. This first version implements it just in plain closures. A support for coroutine closures will be added in follow up pull requests. RFC: will be added later Tracking issue: rust-lang#155050 Project goal: - rust-lang/goals#107 - https://rust-lang.github.io/rust-project-goals/2026/ergonomic-rc.html r? @nikomatsakis

…uwer Rollup of 11 pull requests Successful merges: - #156448 (miri subtree update) - #155023 (Introduce move expressions (`move($expr)`) ) - #156429 (Simplify `intrinsic::raw_eq` in MIR when possible) - #147672 (LLBC-linker: Do not strip debug symbols for the nvptx target anymore) - #155169 (jsondoclint: simplify code using idiomatic Rust) - #155184 ( Have arrays' `drop_glue` just unsize and call the slice version) - #156022 (rustdoc: Fix cosmetic issues when reporting unresolved paths in `broken_intra_doc_links`) - #156442 (Show intrinsics::gpu in docs) - #156461 (LLVM 23: Specify `returnaddress` intrinsic return type) - #156462 (LLVM 23: Accept float (instead of hex) literals in codegen tests) - #156466 (Refactor `CheckAttrVisitor` so rustfmt can format it.)

@nikomatsakis

Rollup merge of #155023 - TaKO8Ki:move-expr-1, r=nikomatsakis Introduce move expressions (`move($expr)`) This is an experimental first version of move expressions. This first version implements it just in plain closures. A support for coroutine closures will be added in follow up pull requests. RFC: will be added later Tracking issue: #155050 Project goal: - rust-lang/goals#107 - https://rust-lang.github.io/rust-project-goals/2026/ergonomic-rc.html r? @nikomatsakis

…uwer Rollup of 11 pull requests Successful merges: - rust-lang/rust#156448 (miri subtree update) - rust-lang/rust#155023 (Introduce move expressions (`move($expr)`) ) - rust-lang/rust#156429 (Simplify `intrinsic::raw_eq` in MIR when possible) - rust-lang/rust#147672 (LLBC-linker: Do not strip debug symbols for the nvptx target anymore) - rust-lang/rust#155169 (jsondoclint: simplify code using idiomatic Rust) - rust-lang/rust#155184 ( Have arrays' `drop_glue` just unsize and call the slice version) - rust-lang/rust#156022 (rustdoc: Fix cosmetic issues when reporting unresolved paths in `broken_intra_doc_links`) - rust-lang/rust#156442 (Show intrinsics::gpu in docs) - rust-lang/rust#156461 (LLVM 23: Specify `returnaddress` intrinsic return type) - rust-lang/rust#156462 (LLVM 23: Accept float (instead of hex) literals in codegen tests) - rust-lang/rust#156466 (Refactor `CheckAttrVisitor` so rustfmt can format it.)

@nikomatsakis

Introduce move expressions (`move($expr)`) This is an experimental first version of move expressions. This first version implements it just in plain closures. A support for coroutine closures will be added in follow up pull requests. RFC: will be added later Tracking issue: rust-lang#155050 Project goal: - rust-lang/goals#107 - https://rust-lang.github.io/rust-project-goals/2026/ergonomic-rc.html r? @nikomatsakis

…uwer Rollup of 11 pull requests Successful merges: - rust-lang/rust#156448 (miri subtree update) - rust-lang/rust#155023 (Introduce move expressions (`move($expr)`) ) - rust-lang/rust#156429 (Simplify `intrinsic::raw_eq` in MIR when possible) - rust-lang/rust#147672 (LLBC-linker: Do not strip debug symbols for the nvptx target anymore) - rust-lang/rust#155169 (jsondoclint: simplify code using idiomatic Rust) - rust-lang/rust#155184 ( Have arrays' `drop_glue` just unsize and call the slice version) - rust-lang/rust#156022 (rustdoc: Fix cosmetic issues when reporting unresolved paths in `broken_intra_doc_links`) - rust-lang/rust#156442 (Show intrinsics::gpu in docs) - rust-lang/rust#156461 (LLVM 23: Specify `returnaddress` intrinsic return type) - rust-lang/rust#156462 (LLVM 23: Accept float (instead of hex) literals in codegen tests) - rust-lang/rust#156466 (Refactor `CheckAttrVisitor` so rustfmt can format it.)

rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Apr 9, 2026

TaKO8Ki force-pushed the move-expr-1 branch from 1a19a26 to 0dcce73 Compare April 9, 2026 13:05

rustbot added T-clippy Relevant to the Clippy team. T-rustfmt Relevant to the rustfmt team, which will review and decide on the PR/issue. labels Apr 9, 2026

rust-lang deleted a comment from rust-log-analyzer Apr 9, 2026

TaKO8Ki changed the title ~~Move expressions (move($expr))~~ Introduce move expressions (move($expr)) Apr 9, 2026

This comment has been minimized.

Sign in to view

TaKO8Ki mentioned this pull request Apr 9, 2026

Tracking Issue for move expressions (move(expr)) #155050

Open

14 tasks

This comment has been minimized.

Sign in to view

TaKO8Ki force-pushed the move-expr-1 branch from e25c9ae to 5aba0a6 Compare April 16, 2026 12:25

TaKO8Ki marked this pull request as ready for review April 16, 2026 12:26

rustbot added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Apr 16, 2026

rustbot removed the S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. label Apr 16, 2026

rustbot assigned nikomatsakis Apr 16, 2026

fmease requested changes Apr 16, 2026

View reviewed changes

Comment thread compiler/rustc_ast_passes/src/feature_gate.rs Outdated

rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Apr 16, 2026

nikomatsakis requested changes Apr 16, 2026

View reviewed changes

This comment has been minimized.

Sign in to view

TaKO8Ki force-pushed the move-expr-1 branch from c72426a to adddc72 Compare April 30, 2026 08:56

This comment has been minimized.

Sign in to view

TaKO8Ki requested a review from nikomatsakis April 30, 2026 12:26

rustbot added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Apr 30, 2026

TaKO8Ki force-pushed the move-expr-1 branch from adddc72 to 6b339db Compare April 30, 2026 12:26

rustbot removed the S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. label Apr 30, 2026

This comment has been minimized.

Sign in to view

rust-bors Bot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels May 11, 2026

rust-bors Bot added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels May 11, 2026

This comment has been minimized.

Sign in to view

rust-bors Bot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels May 11, 2026

rust-bors Bot added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels May 11, 2026

This was referenced May 11, 2026

Rollup of 8 pull requests #156470

Closed

Rollup of 11 pull requests #156473

Merged

rust-bors Bot merged commit 1db77ea into rust-lang:main May 12, 2026
3 of 12 checks passed

rustbot added this to the 1.97.0 milestone May 12, 2026

TaKO8Ki deleted the move-expr-1 branch May 12, 2026 08:33

rust-timer mentioned this pull request May 14, 2026

Rollup of 7 pull requests #156559

Merged

Uh oh!

Conversation

TaKO8Ki commented Apr 9, 2026 • edited by rustbot Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

This comment has been minimized.

This comment has been minimized.

rustbot commented Apr 16, 2026

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Uh oh!

This comment has been minimized.

This comment has been minimized.

This comment has been minimized.

This comment has been minimized.

rust-bors Bot commented May 11, 2026

Uh oh!

TaKO8Ki commented May 11, 2026

Uh oh!

This comment has been minimized.

rust-log-analyzer commented May 11, 2026

Uh oh!

rust-bors Bot commented May 11, 2026

Uh oh!

RalfJung commented May 11, 2026

Uh oh!

rust-log-analyzer commented May 11, 2026

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

7 participants

TaKO8Ki commented Apr 9, 2026 •

edited by rustbot

Loading