Only allow immutable statics with #[linkage] #125046

bjorn3 · 2024-05-12T14:22:42Z

No description provided.

rustbot · 2024-05-12T14:22:49Z

rustbot has assigned @cjgillot.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

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compiler-errors · 2024-05-12T20:54:15Z

compiler/rustc_codegen_ssa/src/codegen_attrs.rs

@@ -327,6 +327,10 @@ fn codegen_fn_attrs(tcx: TyCtxt<'_>, did: LocalDefId) -> CodegenFnAttrs {
                    } else {
                        codegen_fn_attrs.linkage = linkage;
                    }
+                    if tcx.is_mutable_static(did.into()) {
+                        tcx.dcx()
+                            .span_err(attr.span, "mutable statics are not allowed with #[linkage]");


Suggested change

.span_err(attr.span, "mutable statics are not allowed with #[linkage]");

.span_err(attr.span, "mutable statics are not allowed with `#[linkage]`");

Also maybe worth while explaining why in a note, or linking to something that explains why.

bjorn3 · 2024-05-19T13:42:41Z

@rustbot ready

cjgillot · 2024-05-19T14:00:38Z

Should this be considered as a breaking change that requires t-lang signoff, or as something that has never worked ever?

bjorn3 · 2024-05-19T14:05:00Z

#[linkage] is an unstable feature. It seems like an oversight to me that static mut was not denied when used with #[linkage].

cjgillot · 2024-05-26T17:48:35Z

Indeed.
@bors r+

bors · 2024-05-26T17:48:37Z

📌 Commit 531dae1 has been approved by cjgillot

It is now in the queue for this repository.

…r=cjgillot Only allow immutable statics with #[linkage]

…kingjubilee Rollup of 10 pull requests Successful merges: - rust-lang#125046 (Only allow immutable statics with #[linkage]) - rust-lang#125466 (Don't continue probing for method if in suggestion and autoderef hits ambiguity) - rust-lang#125469 (Don't skip out of inner const when looking for body for suggestion) - rust-lang#125530 (cleanup dependence of `ExtCtxt` in transcribe when macro expansion) - rust-lang#125535 (clean-up: remove deprecated field `dist.missing-tools`) - rust-lang#125539 (crashes: increment the number of tracked ones) - rust-lang#125544 (Also mention my-self for other check-cfg docs changes) - rust-lang#125559 (Simplify the `unchecked_sh[lr]` ub-checks a bit) - rust-lang#125566 (Notify T-rustdoc for beta-accepted and stable-accepted too) - rust-lang#125582 (Avoid a `FieldIdx::from_usize` in InstSimplify) r? `@ghost` `@rustbot` modify labels: rollup

…r=cjgillot Only allow immutable statics with #[linkage]

…kingjubilee Rollup of 8 pull requests Successful merges: - rust-lang#124048 (Support C23's Variadics Without a Named Parameter) - rust-lang#125046 (Only allow immutable statics with #[linkage]) - rust-lang#125466 (Don't continue probing for method if in suggestion and autoderef hits ambiguity) - rust-lang#125469 (Don't skip out of inner const when looking for body for suggestion) - rust-lang#125544 (Also mention my-self for other check-cfg docs changes) - rust-lang#125559 (Simplify the `unchecked_sh[lr]` ub-checks a bit) - rust-lang#125566 (Notify T-rustdoc for beta-accepted and stable-accepted too) - rust-lang#125582 (Avoid a `FieldIdx::from_usize` in InstSimplify) r? `@ghost` `@rustbot` modify labels: rollup

Rollup merge of rust-lang#125046 - bjorn3:no_mutable_static_linkage, r=cjgillot Only allow immutable statics with #[linkage]

…ic_task_queue, r=jethrogb Fix `mut` static task queue in SGX target [PR 125046](rust-lang#125046) prevents mutable references to statics with `#[linkage]`. Such a construct was used with the tests for the `x86_64-fortanix-unknown-sgx` target. This PR fixes this and cleans up code a bit in 5 steps. Each step passes CI: - The `mut` static is removed, and `Task` explicitly implements `Send` - Renaming of the `task_queue::lock` function - Pass function for `Thread` as `Send` to `Thread::imp` and update when `Packet<'scope, T>` implements `Sync` - Storing `Task::p` as a type that implements `Send` - Letting the compiler auto implement `Send` for `Task` cc: `@jethrogb`

…f, r=Urgau Allow static mut definitions with #[linkage] Unlike static declarations with #[linkage], for definitions rustc doesn't rewrite it to add an extra indirection. This was accidentally disallowed in rust-lang#125046. cc rust-lang#125800 (comment)

Rollup merge of rust-lang#125920 - bjorn3:allow_static_mut_linkage_def, r=Urgau Allow static mut definitions with #[linkage] Unlike static declarations with #[linkage], for definitions rustc doesn't rewrite it to add an extra indirection. This was accidentally disallowed in rust-lang#125046. cc rust-lang#125800 (comment)

…ic_task_queue, r=jethrogb Fix `mut` static task queue in SGX target [PR 125046](rust-lang#125046) prevents mutable references to statics with `#[linkage]`. Such a construct was used with the tests for the `x86_64-fortanix-unknown-sgx` target. This PR fixes this and cleans up code a bit in 5 steps. Each step passes CI: - The `mut` static is removed, and `Task` explicitly implements `Send` - Renaming of the `task_queue::lock` function - Pass function for `Thread` as `Send` to `Thread::imp` and update when `Packet<'scope, T>` implements `Sync` - Storing `Task::p` as a type that implements `Send` - Letting the compiler auto implement `Send` for `Task` cc: ``@jethrogb``

Rollup merge of rust-lang#125800 - fortanix:raoul/rte-99-fix_mut_static_task_queue, r=jethrogb Fix `mut` static task queue in SGX target [PR 125046](rust-lang#125046) prevents mutable references to statics with `#[linkage]`. Such a construct was used with the tests for the `x86_64-fortanix-unknown-sgx` target. This PR fixes this and cleans up code a bit in 5 steps. Each step passes CI: - The `mut` static is removed, and `Task` explicitly implements `Send` - Renaming of the `task_queue::lock` function - Pass function for `Thread` as `Send` to `Thread::imp` and update when `Packet<'scope, T>` implements `Sync` - Storing `Task::p` as a type that implements `Send` - Letting the compiler auto implement `Send` for `Task` cc: ``@jethrogb``

…ueue, r=jethrogb Fix `mut` static task queue in SGX target [PR 125046](rust-lang/rust#125046) prevents mutable references to statics with `#[linkage]`. Such a construct was used with the tests for the `x86_64-fortanix-unknown-sgx` target. This PR fixes this and cleans up code a bit in 5 steps. Each step passes CI: - The `mut` static is removed, and `Task` explicitly implements `Send` - Renaming of the `task_queue::lock` function - Pass function for `Thread` as `Send` to `Thread::imp` and update when `Packet<'scope, T>` implements `Sync` - Storing `Task::p` as a type that implements `Send` - Letting the compiler auto implement `Send` for `Task` cc: ``@jethrogb``

Allow static mut definitions with #[linkage] Unlike static declarations with #[linkage], for definitions rustc doesn't rewrite it to add an extra indirection. This was accidentally disallowed in rust-lang/rust#125046. cc rust-lang/rust#125800 (comment)

Update Rust toolchain from nightly-2024-05-27 to nightly-2024-05-28 without any other source changes. This is an automatically generated pull request. If any of the CI checks fail, manual intervention is required. In such a case, review the changes at https://github.com/rust-lang/rust from rust-lang@bdbbb6c up to rust-lang@84b40fc. The log for this commit range is: rust-lang@84b40fc908 Auto merge of rust-lang#125628 - matthiaskrgr:rollup-3zk9v3w, r=matthiaskrgr rust-lang@4966e1ae35 Rollup merge of rust-lang#125625 - ChrisDenton:line-endings, r=Mark-Simulacrum rust-lang@61f9d35798 Rollup merge of rust-lang#125616 - RalfJung:mir-validate-downcast-projection, r=compiler-errors rust-lang@e8dd585dd8 Rollup merge of rust-lang#125542 - GuillaumeGomez:migrate-rustdoc-verify-output-files, r=jieyouxu rust-lang@8bd15878eb Rollup merge of rust-lang#125339 - tbu-:pr_tidy_ui_tests_u32, r=clubby789 rust-lang@f00b02e6bb Auto merge of rust-lang#125599 - camelid:clarify-stability, r=notriddle,GuillaumeGomez rust-lang@7a847fc4fb Use grep to implement verify-line-endings rust-lang@b0f8618938 Auto merge of rust-lang#125413 - lcnr:ambig-drop-region-constraints, r=compiler-errors rust-lang@7d24f87068 MIR validation: ensure that downcast projection is followed by field projection rust-lang@f6e4703e91 Auto merge of rust-lang#125611 - GuillaumeGomez:rollup-dfavpgg, r=GuillaumeGomez rust-lang@bdf3864d51 Migrate `run-make/rustdoc-verify-output-files` to `rmake.rs` rust-lang@f0ab814aec Add `Rustdoc::output_format` rust-lang@1551fd1202 Add file path in case it cannot be read in `Diff::actual_file` rust-lang@90fec5a087 Add `copy_dir_all` and `recursive_diff` functions to `run-make-support` rust-lang@7083131c92 Rollup merge of rust-lang#125607 - GuillaumeGomez:migrate-compile-stdin, r=jieyouxu rust-lang@a9c125f864 Rollup merge of rust-lang#125597 - compiler-errors:early-binder, r=jackh726 rust-lang@cfa7ab474f Rollup merge of rust-lang#125535 - onur-ozkan:remove-deprecated-field, r=clubby789 rust-lang@f50b4f5034 Rollup merge of rust-lang#125530 - SparrowLii:expand2, r=petrochenkov rust-lang@ad37f40355 Rollup merge of rust-lang#125522 - spastorino:fix-lint-docs-edition-handling, r=Urgau,michaelwoerister rust-lang@86f2fa35a2 Rollup merge of rust-lang#125148 - RalfJung:codegen-sh, r=scottmcm rust-lang@6dddc888fc Rollup merge of rust-lang#124870 - Lokathor:update-result-docs, r=dtolnay rust-lang@a59072ec4f Auto merge of rust-lang#125602 - RalfJung:interpret-mir-lifetime, r=oli-obk rust-lang@e4abfaeb62 Migrate `run-make/compile-stdin` to `rmake.rs` rust-lang@b582f807fa Auto merge of rust-lang#125410 - fmease:adj-lint-diag-api, r=nnethercote rust-lang@fec98b3bbc Auto merge of rust-lang#125468 - BoxyUwU:remove_defid_from_regionparam, r=compiler-errors rust-lang@e8379c9598 interpret: get rid of 'mir lifetime everywhere rust-lang@36d36a3e1f interpret: the MIR is actually at lifetime 'tcx rust-lang@699d28f968 rustdoc: Show "const" for const-unstable if also overall unstable rust-lang@cdc509f7c0 Auto merge of rust-lang#125580 - RalfJung:miri-sync, r=RalfJung rust-lang@f92292978f Use EarlyBinder in rustc_type_ir, simplify imports rust-lang@993553ceb8 Uplift EarlyBinder rust-lang@529bb2573a Auto merge of rust-lang#125593 - workingjubilee:rollup-67qk7di, r=workingjubilee rust-lang@bbcdb4fd3e Give EarlyBinder a tcx parameter rust-lang@4ff78692db Rollup merge of rust-lang#125582 - scottmcm:less-from-usize, r=jieyouxu rust-lang@45507e4304 Rollup merge of rust-lang#125566 - camelid:notify-accepted, r=GuillaumeGomez rust-lang@25b079a1cf Rollup merge of rust-lang#125559 - scottmcm:simplify-shift-ubcheck, r=workingjubilee rust-lang@c51fc1d02b Rollup merge of rust-lang#125544 - Urgau:check-cfg-mention-cargo-specific, r=jieyouxu rust-lang@b65b2b6ced Rollup merge of rust-lang#125469 - compiler-errors:dont-skip-inner-const-body, r=cjgillot rust-lang@09e75921f3 Rollup merge of rust-lang#125466 - compiler-errors:dont-probe-for-ambig-in-sugg, r=jieyouxu rust-lang@5860d43af3 Rollup merge of rust-lang#125046 - bjorn3:no_mutable_static_linkage, r=cjgillot rust-lang@866630d004 Rollup merge of rust-lang#124048 - veera-sivarajan:bugfix-123773-c23-variadics, r=compiler-errors rust-lang@0aad3f64e2 Auto merge of rust-lang#125576 - lnicola:sync-from-ra, r=lnicola rust-lang@d37f456b2a Avoid a `FieldIdx::from_usize` in InstSimplify rust-lang@0963353634 Auto merge of rust-lang#3631 - RalfJung:blocking-refactor, r=RalfJung rust-lang@2e89443b93 add a macro to declare thread unblock callbacks rust-lang@8e861c6c4c Auto merge of rust-lang#3632 - RalfJung:readdir, r=RalfJung rust-lang@350f5c88db unix/fs: a bit of cleanup in macos_fbsd_readdir_r rust-lang@e09bf5694b Auto merge of rust-lang#3633 - RalfJung:target, r=RalfJung rust-lang@cbec1288a2 fix './miri run --dep --target _' rust-lang@e6bb468b53 data_race: vector indices can be reused immediately when the thread is gone rust-lang@a131243557 completely refactor how we manage blocking and unblocking threads rust-lang@f7ca8a6d66 Auto merge of rust-lang#17296 - mathew-horner:no-clone-target, r=Veykril rust-lang@bd9cc02d10 Auto merge of rust-lang#17295 - 0xJonas:fix_passing_env_vars_to_cpptools, r=Veykril rust-lang@5fa30f7eaa make release_clock always work on the current thread rust-lang@fa7a3f9049 rustdoc: Elide const-unstable if also unstable overall rust-lang@91b3ef5b4a Notify T-rustdoc for beta-accepted and stable-accepted too rust-lang@9b480da367 It seems that anchor names are implicitly all lowercase rust-lang@0c84361342 Simplify the `unchecked_sh[lr]` ub-checks a bit rust-lang@f8279b10c3 Fix URL target, it's in the module not the type. rust-lang@2b2f83e5ff github showed that weird. rust-lang@2e8f14fb37 correct for copy paste errors when fixing wrapping. rust-lang@22668e83f6 Resolve rust-lang#124870 (comment) rust-lang@939f2671a0 revert to the inconsistent paragraph wrapping. rust-lang@eb9894f3c9 Removed return rust-lang@afa8dfc51f Avoid clone when constructing runnable label. rust-lang@09677b03dd Formatting rust-lang@78fe45e273 Semicolon rust-lang@2315c6b764 Use correct format for setting environment variables when debugging with cpptools rust-lang@331bb3f10d Auto merge of rust-lang#3630 - rust-lang:rustup-2024-05-25, r=saethlin rust-lang@bebcb4e4b8 Also mention my-self for check-cfg docs changes rust-lang@c76477d909 add change entry rust-lang@56dddd4c7e Remove deprecated field `dist.missing-tools` rust-lang@1d0ad04993 Merge from rustc rust-lang@3cfcfbf083 Preparing for merge from rustc rust-lang@41d4a95fca Add "better" edition handling on lint-docs tool rust-lang@278212342e cleanup dependence of `ExtCtxt` in transcribe when macro expansion rust-lang@24b5466892 drop region constraints for ambiguous goals rust-lang@ed8e436916 move generics_of call outside of iter rust-lang@56d77b9048 Auto merge of rust-lang#17275 - roife:fix-issue-17012, r=Veykril rust-lang@796cb8031d Remove failing tests rust-lang@f856ee357c Remove `DefId` from `EarlyParamRegion` (clippy/smir) rust-lang@fe2d7794ca Remove `DefId` from `EarlyParamRegion` (tedium/diagnostics) rust-lang@bd6344d829 Remove `DefId` from `EarlyParamRegion` (type system) rust-lang@b7b350cff7 docs rust-lang@008f6b3a3f Auto merge of rust-lang#3626 - devnexen:pthread_name_illumos, r=oli-obk rust-lang@7fc41d1bdf Auto merge of rust-lang#3625 - Strophox:miri-allocation-fix, r=RalfJung rust-lang@b84620ff17 extend comments rust-lang@88d519f718 Auto merge of rust-lang#3628 - RalfJung:tokio, r=RalfJung rust-lang@561bd9a5ec add back some tokio features rust-lang@10d414091b Auto merge of rust-lang#3627 - rust-lang:rustup-2024-05-24, r=RalfJung rust-lang@4763eaf066 fmt rust-lang@debf88ae1a Merge from rustc rust-lang@9ce95c30b2 Preparing for merge from rustc rust-lang@c58b7c9c81 Don't skip inner const when looking for body for suggestion rust-lang@4bc41b91d7 Don't continue probing for method if in suggestion and autoderef hits ambiguity rust-lang@7f5e0aade8 solaris add suport for threadname. rust-lang@3c7a13d870 tests: update test for runnables rust-lang@c10bda5577 Update docs rust-lang@1a37cfb703 Use cwd from runnable.args for debugger rust-lang@7b54c8231e Revert "Debug use cargo workspace root as cwd. fixes rust-lang#13022" rust-lang@d83b267bc1 Add cwd to CargoRunnable rust-lang@6259991f04 Auto merge of rust-lang#17287 - 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davidbarsky:david/fix-completions-from-associated-types, r=Veykril rust-lang@f2c3ef77b1 fix: ensure implied bounds from associated types are considered in autocomplete rust-lang@04a9a1a531 Auto merge of rust-lang#3614 - devnexen:illumos_time_support, r=oli-obk rust-lang@0916e72a34 Auto merge of rust-lang#17251 - roife:fix-issue-17057, r=Veykril rust-lang@56ce7e0e06 Auto merge of rust-lang#17252 - davidbarsky:david/refactor-standalone-bools-into-struct, r=Veykril rust-lang@f50f8fbcb9 Simplify rust-lang@7a21dff517 internal: refactor `prefer_no_std`/`prefer_prelude` bools into a struct rust-lang@4e9b12870c fix: check pseudo-block by local_id instead of ModuleOrigin rust-lang@ad810a51f0 Auto merge of rust-lang#17277 - Veykril:find-path-fixes, r=Veykril rust-lang@3f638a9291 solaris/illumos localtime_r / clock_getime support enabled. rust-lang@d9dda8f84f Auto merge of rust-lang#17279 - Veykril:format_args-escape, r=Veykril rust-lang@2ff9bab2eb fix: Fix format_args lowering passing incorrect parameters to rustc_parse_format rust-lang@39e6032445 Auto merge of rust-lang#17248 - mladedav:dm/delay-clear, r=Veykril rust-lang@24bf53d993 Auto merge of rust-lang#17268 - Veykril:signatures, r=Veykril rust-lang@b1830a5fe6 Update assists test fixtures rust-lang@b29c755572 expectify find_path tests rust-lang@5992af6506 fix: Fix general find-path inconsistencies rust-lang@7fd1429754 Auto merge of rust-lang#3623 - RalfJung:rustup, r=RalfJung rust-lang@abbe244a81 clippy rust-lang@a1bc030b70 Merge from rustc rust-lang@24138f0034 Preparing for merge from rustc rust-lang@c8b0e5b1a4 The number of tests does not depend on the architecture's pointer width rust-lang@719eee2d82 test: add tests for extern preludes resolving in local mods rust-lang@41c006e21a Auto merge of rust-lang#3610 - marc0246:missing-error-kinds, r=RalfJung rust-lang@37a37f6ab3 Use `throw_unsup_format` instead of returning `ENOTSUP` in the mmap shim rust-lang@6438554bce Show fn traits in signature info for trait implementors rust-lang@f42e55dfc8 Enable linked locations for closure param inlay hints rust-lang@4b3d7f6039 Render closure fn trait kind in siganture help rust-lang@7045044da3 Allow hir::Param to refer to other entity params aside from functions rust-lang@9ff4ffb817 Update builtin tool list rust-lang@ea2a16cadb fix: resolve extern prelude for local mods in block modules rust-lang@1287e868e9 Clear diagnostics only after new ones were received rust-lang@17bd43cb25 codegen: tweak/extend shift comments rust-lang@b468f21051 Don't use `T` with both Result and Option, improve explanation. rust-lang@531dae1cdf Only allow immutable statics with #[linkage] rust-lang@10f8d1ffef use teletype on the attribute name rust-lang@f94fa6bee3 Some Result combinations work like an Option. rust-lang@dd16cbcb4e braces around {self} in UseTree are not unnecessary rust-lang@39a653f632 Fix coercion of async block rust-lang@f005b451c2 Support C23's Variadics Without a Named Parameter rust-lang@62a104df98 Update Tests Co-authored-by: qinheping <[email protected]>

rustbot assigned cjgillot May 12, 2024

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ICE: !tcx.is_mutable_static(def_id) (#[linkage = "weak"]) rust-lang/rustc_codegen_cranelift#1473

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bjorn3 force-pushed the no_mutable_static_linkage branch from e4a404a to 88b27eb Compare May 12, 2024 15:25

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Only allow immutable statics with #[linkage]

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bjorn3 force-pushed the no_mutable_static_linkage branch from 715d72f to 531dae1 Compare May 13, 2024 14:34

bors 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 26, 2024

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Rollup merge of rust-lang#125046 - bjorn3:no_mutable_static_linkage, …

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…r=cjgillot Only allow immutable statics with #[linkage]

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Rollup of 10 pull requests #125588

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Rollup merge of rust-lang#125046 - bjorn3:no_mutable_static_linkage, …

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…r=cjgillot Only allow immutable statics with #[linkage]

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Rollup of 7 pull requests #125591

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Rollup merge of rust-lang#125046 - bjorn3:no_mutable_static_linkage, …

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…r=cjgillot Only allow immutable statics with #[linkage]

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Rollup of 8 pull requests #125592

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Rollup of 8 pull requests #125593

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Unrolled build for rust-lang#125046

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Rollup merge of rust-lang#125046 - bjorn3:no_mutable_static_linkage, r=cjgillot Only allow immutable statics with #[linkage]

bjorn3 deleted the no_mutable_static_linkage branch May 27, 2024 08:29

raoulstrackx mentioned this pull request May 31, 2024

Fix mut static task queue in SGX target #125800

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Allow static mut definitions with #[linkage] #125920

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	.span_err(attr.span, "mutable statics are not allowed with #[linkage]");
	.span_err(attr.span, "mutable statics are not allowed with `#[linkage]`");

Only allow immutable statics with #[linkage] #125046

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