Allow any const expression blocks in thread_local!
#120181
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Before making thread_local accept statements inside the const block,
this test would fail to compile as follows:
error: no rules expected the token `let`
--> library/std/tests/thread.rs:26:13
|
26 | let value = 1;
| ^^^ no rules expected this token in macro call
|
note: while trying to match meta-variable `$init:expr`
--> library/std/src/thread/local.rs:189:69
|
189 | ($(#[$attr:meta])* $vis:vis static $name:ident: $t:ty = const { $init:expr }; $($rest:tt)*) => (
| ^^^^^^^^^^
|
r? @thomcc (rustbot has picked a reviewer for you, use r? to override) |
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@bors r+ |
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matthiaskrgr
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Jan 22, 2024
Allow any `const` expression blocks in `thread_local!` This PR contains a rebase of the macro change from rust-lang#116392, together with adding a test under library/std/tests. Testing this feature by making the documentation's example code needlessly more complicated was not appropriate as pointed out in rust-lang#116392 (review). Without the macro change, this new test would fail to build as follows: ```console error: no rules expected the token `let` --> library/std/tests/thread.rs:26:13 | 26 | let value = 1; | ^^^ no rules expected this token in macro call | note: while trying to match meta-variable `$init:expr` --> library/std/src/thread/local.rs:189:69 | 189 | ($(#[$attr:meta])* $vis:vis static $name:ident: $t:ty = const { $init:expr }; $($rest:tt)*) => ( | ^^^^^^^^^^ ``` Closes rust-lang#116392.
matthiaskrgr
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Allow any `const` expression blocks in `thread_local!` This PR contains a rebase of the macro change from rust-lang#116392, together with adding a test under library/std/tests. Testing this feature by making the documentation's example code needlessly more complicated was not appropriate as pointed out in rust-lang#116392 (review). Without the macro change, this new test would fail to build as follows: ```console error: no rules expected the token `let` --> library/std/tests/thread.rs:26:13 | 26 | let value = 1; | ^^^ no rules expected this token in macro call | note: while trying to match meta-variable `$init:expr` --> library/std/src/thread/local.rs:189:69 | 189 | ($(#[$attr:meta])* $vis:vis static $name:ident: $t:ty = const { $init:expr }; $($rest:tt)*) => ( | ^^^^^^^^^^ ``` Closes rust-lang#116392.
bors
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…iaskrgr Rollup of 11 pull requests Successful merges: - rust-lang#117910 (Refactor uses of `objc_msgSend` to no longer have clashing definitions) - rust-lang#118639 (Undeprecate lint `unstable_features` and make use of it in the compiler) - rust-lang#119801 (Fix deallocation with wrong allocator in (A)Rc::from_box_in) - rust-lang#120058 (bootstrap: improvements for compiler builds) - rust-lang#120059 (Make generic const type mismatches not hide trait impls from the trait solver) - rust-lang#120097 (Report unreachable subpatterns consistently) - rust-lang#120137 (Validate AggregateKind types in MIR) - rust-lang#120164 (`maybe_lint_impl_trait`: separate `is_downgradable` from `is_object_safe`) - rust-lang#120181 (Allow any `const` expression blocks in `thread_local!`) - rust-lang#120204 (Builtin macros effectively have implicit #[collapse_debuginfo(yes)]) - rust-lang#120218 (rustfmt: Check that a token can begin a nonterminal kind before parsing it as a macro arg) r? `@ghost` `@rustbot` modify labels: rollup
bors
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…iaskrgr Rollup of 10 pull requests Successful merges: - rust-lang#117910 (Refactor uses of `objc_msgSend` to no longer have clashing definitions) - rust-lang#118639 (Undeprecate lint `unstable_features` and make use of it in the compiler) - rust-lang#119801 (Fix deallocation with wrong allocator in (A)Rc::from_box_in) - rust-lang#120058 (bootstrap: improvements for compiler builds) - rust-lang#120059 (Make generic const type mismatches not hide trait impls from the trait solver) - rust-lang#120097 (Report unreachable subpatterns consistently) - rust-lang#120137 (Validate AggregateKind types in MIR) - rust-lang#120164 (`maybe_lint_impl_trait`: separate `is_downgradable` from `is_object_safe`) - rust-lang#120181 (Allow any `const` expression blocks in `thread_local!`) - rust-lang#120218 (rustfmt: Check that a token can begin a nonterminal kind before parsing it as a macro arg) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#120181 - dtolnay:tlconst, r=thomcc Allow any `const` expression blocks in `thread_local!` This PR contains a rebase of the macro change from rust-lang#116392, together with adding a test under library/std/tests. Testing this feature by making the documentation's example code needlessly more complicated was not appropriate as pointed out in rust-lang#116392 (review). Without the macro change, this new test would fail to build as follows: ```console error: no rules expected the token `let` --> library/std/tests/thread.rs:26:13 | 26 | let value = 1; | ^^^ no rules expected this token in macro call | note: while trying to match meta-variable `$init:expr` --> library/std/src/thread/local.rs:189:69 | 189 | ($(#[$attr:meta])* $vis:vis static $name:ident: $t:ty = const { $init:expr }; $($rest:tt)*) => ( | ^^^^^^^^^^ ``` Closes rust-lang#116392.
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This PR contains a rebase of the macro change from #116392, together with adding a test under library/std/tests.
Testing this feature by making the documentation's example code needlessly more complicated was not appropriate as pointed out in #116392 (review).
Without the macro change, this new test would fail to build as follows:
Closes #116392.