fix(syntax): fix unsound use of NonZeroU32
#4466
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This was referenced Jul 25, 2024
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`NonZeroU32::new_unchecked(idx as u32 + 1)` is unsound because if `idx == u32::MAX`, `idx + 1` wraps around back to zero. So unfortunately we need to use the checked version `NonZeroU32::new(idx as u32 + 1).unwrap()` to avoid UB in this edge case.
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## [0.22.1] - 2024-07-27 ### Features - 2477330 ast: Add `AstKind::TSExportAssignment` (#4501) (Dunqing) - aaee07e ast: Add `AstKind::AssignmentTargetPattern`, `AstKind::ArrayAssignmentTarget` and `AstKind::ObjectAssignmentTarget` (#4456) (Dunqing) - fd363d1 ast: Add AstKind::get_container_scope_id (#4450) (DonIsaac) - e2735ca span: Add `contains_inclusive` method (#4491) (DonIsaac) ### Bug Fixes - 368112c ast: Remove `#[visit(ignore)]` from `ExportDefaultDeclarationKind`'s `TSInterfaceDeclaration` (#4497) (Dunqing) - 36bb680 semantic: `TSExportAssignment` cannot reference type binding (#4502) (Dunqing) - cb2fa49 semantic: `typeof` operator cannot reference type-only import (#4500) (Dunqing) - ef0e953 semantic: Generic passed to typeof not counted as a reference (#4499) (Dunqing) - 40cafb8 semantic: Params in `export default (function() {})` flagged as `SymbolFlags::Export` (#4480) (Dunqing) - 2e01a45 semantic: Non-exported namespace member symbols flagged as exported (#4493) (Don Isaac) - e4ca06a semantic: Incorrect symbol’s scope_id after var hoisting (#4458) (Dunqing) - 77bd5f1 semantic: Use correct span for namespace symbols (#4448) (Don Isaac) - 5db7bed sourcemap: Fix pre-calculation of required segments for building JSON (#4490) (overlookmotel) - 1667491 syntax: Correct `is_reserved_keyword_or_global_object`'s incorrect function calling. (#4484) (Ethan Goh) - 82ba2a0 syntax: Fix unsound use of `NonZeroU32` (#4466) (overlookmotel) - c04b9aa transformer: Add to `SymbolTable::declarations` for all symbols (#4460) (overlookmotel) - ecdee88 transformer/typescript: Incorrect eliminate exports when the referenced symbol is both value and type (#4507) (Dunqing) ### Performance - 963a2d1 mangler: Reduce unnecessary allocation (#4498) (Dunqing) - 868fc87 parser: Optimize conditional advance on ASCII values (#4298) (lucab) - 24beaeb semantic: Give `AstNodeId` a niche (#4469) (overlookmotel) - 348c1ad semantic: Remove `span` field from `Reference` (#4464) (overlookmotel) - 6a9f4db semantic: Reduce storage size for symbol redeclarations (#4463) (overlookmotel) - 705e19f sourcemap: Reduce memory copies encoding JSON (#4489) (overlookmotel) - 4d10c6c sourcemap: Pre allocate String buf while encoding (#4476) (Brooooooklyn) ### Documentation - f5f0ba8 ast: Add doc comments to more AST nodes (#4413) (Don Isaac) - 871b3d6 semantic: Add doc comments for SymbolTester and SemanticTester (#4433) (DonIsaac) ### Refactor - 9c5d2f9 ast/builder: Use `Box::new_in` over `.into_in` (#4428) (overlookmotel) - ccb1835 semantic: Methods take `Span` as param, not `&Span` (#4470) (overlookmotel) - f17254a semantic: Populate `declarations` field in `SymbolTable::create_symbol` (#4461) (overlookmotel) - a49f491 semantic: Re-order `SymbolTable` fields (#4459) (overlookmotel) - 7cd53f3 semantic: Var hoisting (#4379) (Dunqing) - 4f5a7cb semantic: Mark SemanticTester and SymbolTester as must_use (#4430) (DonIsaac) - c958a55 sourcemap: `push_list` method for building JSON (#4486) (overlookmotel) - c99b3eb syntax: Give `ScopeId` a niche (#4468) (overlookmotel) - 96fc94f syntax: Use `NonMaxU32` for IDs (#4467) (overlookmotel) ### Testing - 4b274a8 semantic: Add more test cases for symbol references (#4429) (DonIsaac) Co-authored-by: Boshen <1430279+Boshen@users.noreply.github.com>
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NonZeroU32::new_unchecked(idx as u32 + 1)is unsound because ifidx == u32::MAX,idx + 1wraps around back to zero. So unfortunately we need to use the checked versionNonZeroU32::new(idx as u32 + 1).unwrap()to avoid UB in this edge case.