v2.18.0

New Features

• Added forwarding option for Starknet interfaces. #9847
  Auto-generated forwarding impls can now be created for Starknet interfaces. This makes it easy to include interfaces declared in other contracts by forwarding the library calls.

• Extensive macro system diagnostics improvements. #9842 #9844
  #9845 #9846
  The macro system received several improvements in robustness and diagnostics:

  • Parser now emits E1031 when a macro repetition group $(...) is missing its required ?, +, or * operator.
  • Macro rules with declaration-time errors are now tracked and skipped during expansion, preventing panics on broken rules.
  • A no-progress guard prevents infinite loops when repetition patterns match zero tokens.
  • Declaration-time diagnostics now validate placeholder usage in expansion patterns: E2198 is emitted when a placeholder is used outside its required repetition depth, and E2199 when placeholders from different repetition contexts are mixed in the same expansion block.

Optimizations

Compiler Runtime

• Removed no longer required extra gas-withdraw from Starknet entrypoint wrappers. #9792
• Made apply optimizations trait-based for a unified interface. #9838
• Made less calculations in BigInt and conversions. #9696
• Eliminated redundant clone in store_variables invocation handling. #9715
• Removed redundant clone in implicits goto remapping. #9782
• Avoided clone in lower_expr_desnap by matching LoweredExpr by value. #9712
• Avoided redundant Rc allocations in reboxing loop. #9706
• Removed unnecessary Vec allocation in split_structs. #9654
• Removed redundant clone in store_local calls. #9694
• Removed unnecessary vector clone in closure capture. #9691
• Much smaller clones in usages analysis. #9641
• Removed redundant HashMap lookup in SCC algorithm. #9650
• Used Entry API in add_drop to reduce hash lookups. #9674

New Contributors

• @apetro2 made their first contribution in #9745

Full Changelog: v2.17.0...v2.18.0

v2.18.0-rc.0

Cairo compiler.

v2.17.0

What's Changed

• Bumped sierra version to v1.8.0. #9687
• Upgrade cairo-vm version. #9772
• Make get execution info v3 syscall default. #9775

Full Changelog: v2.16.1...v2.17.0

v2.17.0-rc.4

Cairo compiler.

v2.17.0-rc.3

Cairo compiler.

v2.17.0-rc.2

Cairo compiler.

v2.16.1

Bug Fixes

• Made duplicate variant names not cause compiler crashes.
• #9711 - Fixed slowdown for circuits compilation.
• Made compilation of contracts saved in cached much faster.

Full Changelog: v2.16.0...v2.16.1

v2.16.1-rc.0

Cairo compiler.

v2.17.0-rc.0

Cairo compiler.

v2.16.0

Major Changes

• Added placeholder error codes for all diagnostics. #9302

• Contextualized paths for shorter and more readable diagnostics. #9265

Diagnostic messages now show shorter, context-aware paths making errors easier to understand.

• Created a dataflow analysis framework and migrated backward analysis. #9533

Bug Fixes

• Removed intermediate names from event generated code. #9638
• Made formatter keep ; when it causes ambiguity. #9592
• Fixed mishandling of Self:: in impl-const-items. #9562
• Fixed const-impl-item type-diagnostics span. #9561
• Avoided duplicate ClosureInGlobalScope diagnostics. #9349
• Fixed substorage diagnostic formatting. #9242
• Made internal version dependency fully-fixed. #9313
• Fixed full path for functions in a generic impl. #9267

Optimizations

Compiler Runtime

• Made casm builder build algorithm linear. #9489
• Improved stack-tracking algorithm. #9491
• Vastly reduced the number of clones for building a Sierra program. #9467
• Simplified GasInfo::combine implementation. #9552
• Replaced maps enumerating all statements with Vecs. #9545
• Reduced many map actions by refactoring CostOps. #9536
• Made ApplyApChange inplace. #9448
• Simplified decompression by using bit alignment of encoding. #9607
• Removed many interim vectors for extern fn processing. #9569
• Made const-folding VarInfo cloning shallow by rc. #9304

Gas Usage

• Optimized sha256 padding code. #9360
• Used iterator and BoundedInt for generating keccak input. #9425
• Reboxing now works recursively and applies optimization at deconstruct statement. #9338

Other Changes

• Added cost-token for blake. #9506
• Allow immediate consumption of ref self of temporaries. #9565
• Made single variant matches not create branch align. #9618
• Improved Sierra debug info serde. #9525
• Updated salsa version to 0.25.2. #9280
• Extensive documentation improvements across the reference docs.

New Contributors

• @andrewbig655 made their first contribution in #9163
• @BigTennEd223 made their first contribution in #9169
• @0xlupin made their first contribution in #9193
• @grumi54 made their first contribution in #9178
• @PixelPil0t1 made their first contribution in #9200
• @boqishan made their first contribution in #9212
• @santamasa made their first contribution in #9213
• @lmorett1 made their first contribution in #9238
• @cmende made their first contribution in #9251
• @Aleksandr1732 made their first contribution in #9281
• @esorense made their first contribution in #9286
• @skinnypete65 made their first contribution in #9310
• @JayeTurn made their first contribution in #9325
• @cwhitak3r made their first contribution in #9371
• @MrEeeeet111 made their first contribution in #9502
• @LarryArnault45 made their first contribution in #9546
• @alizfara112 made their first contribution in #9568
• @Evelina331 made their first contribution in #9591
• @MidSage0614 made their first contribution in #9616

Full Changelog: v2.15.0...v2.16.0