April 2026 (2026-04) monthly summary for jasmin-lang/jasmin: Delivered foundational proof engineering enhancements and robustness improvements. Focused on adding a while construct to support iterative reasoning in proofs and on improving linearization proofs through mix-step semantics, complemented by targeted proof-script and semantics robustness fixes and maintainability improvements.

March 2026 monthly summary for jasmin (jasmin-lang/jasmin). Focused on code quality, safety, security, and formal verification to strengthen maintainability, expressiveness, and risk-reduction. No explicit user-reported bugs were noted for March; emphasis on delivering robust features with clear business value and verifiable correctness.

February 2026: Delivered core enhancements for jasmin-lang/jasmin focused on debugging tooling, syntax display, and codebase organization. Implemented internal runtime assertions for in-language debugging (stripped in early compilation passes to avoid impacting final output), introduced a printer for Syntax.pexpr to improve expression formatting, and added safety contracts for function definitions to increase reliability. Refactored operator definitions into a dedicated module to improve maintainability and future extensibility. Overall impact includes faster debugging cycles, clearer error reporting, and a more scalable, well-organized codebase. No customer-facing bugs fixed this month; instead, tooling and architectural improvements reduce risk and boost developer productivity.

January 2026 monthly summary for EasyCrypt/easycrypt focusing on the Ehoare Framework improvements. Delivered a targeted bug fix to alpha-conversion and variable rebinding to ensure correctness of logical assertions and denotations across variable scopes and dependencies. The fix enhances Ehoare semantics under variable transformations, reducing edge-case failures and improving reliability of verification pipelines.

December 2025 monthly summary for jasmin-lang/jasmin: Key feature delivered: Experimental stable_call_conv annotation for internal functions to specify register usage, enabling improved register allocation and function call efficiency. Major bugs fixed: None reported this month. Overall impact and accomplishments: Provides groundwork for more efficient codegen and easier future optimizations; updated architecture and register allocation logic; added test coverage; aligns with performance and maintainability goals. Technologies/skills demonstrated: Compiler internals, architecture changes, annotation-driven feature enhancement, test-driven development, and cross-repo collaboration. Commit highlights: 513852d42449505df988a7b76393e2c0aa92eb8d.

September 2025 monthly summary focusing on delivering key features and stability improvements across EasyCrypt and Jasmin, with emphasis on formal verification capabilities, test coverage, and documentation. Highlights include probabilistic-context reasoning enhancements and cryptographic CT-signature support, backed by targeted tests and updated docs to improve developer onboarding and security guarantees.

June 2025 performance summary for jasmin (jasmin-lang/jasmin): Delivered cross-architecture formal verification of the compiler backend and strengthened the verification infrastructure for stack management. Key back-end achievements include formal proofs for lowering, addressing, inlining, and call semantics across ARM, x86, and RISC-V, with targeted proofs such as riscv_lower_addressing, load_constants_in_cond, direct-call, array_expansion, and the inlining proof. Stack allocation and function-call verification infrastructure was improved through refactoring (stack_allow_proof_2) and new proofs for stack_alloc; adopted ESEm-based usage to improve consistency. Enhanced wequiv_fun_ind and introduced mrec_loop2 lemma (collaboration with Yannick Zakowski and Li-yao Xia) to strengthen equivalence reasoning. Impact: higher correctness guarantees for code generation across architectures, improved runtime safety, reduced risk of memory-management bugs, and better maintainability of verification artifacts. Technologies/skills demonstrated: formal verification, cross-architecture code generation, lemma development, and collaboration across teams.

May 2025 monthly summary focusing on key accomplishments, major deliverables, and impact across two repositories: jasmin-lang/jasmin and EasyCrypt/easycrypt. This period delivered significant feature work and reliability improvements along with targeted bug fixes that enhance business value and long-term maintainability.

April 2025 monthly summary focusing on key accomplishments across two repositories: EasyCrypt/easycrypt and jasmin-lang/jasmin. Highlights include a critical correctness bug fix in equality testing for abstract bindings and significant progress on formal verification efforts for the compiler's itree semantics, with refactoring and new lemmas to support verification.

Monthly summary for 2025-03 focusing on key features delivered, bugs fixed, impact, and skills demonstrated across the jasmin-lang/jasmin and EasyCrypt/easycrypt repos.

February 2025 monthly summary for jasmin-lang/jasmin: Delivered Wide Integer Types (siXX/uiXX) and associated operators, with compiler support and safety checks. This work expands numeric range and improves type safety, enabling new use cases in cryptography, data processing, and systems programming. Added tests and robust cast/conversion handling, contributing to a stronger language foundation.

December 2024: Key UX and correctness improvements for jasmin. Delivered cross-tool CLI enhancements, extended data model support for byte arrays, and corrected shift operator semantics in the EasyCrypt library. Resulted in a more productive developer experience, more robust extraction pipelines, and improved correctness of bitwise operations across the jasmin toolchain.

November 2024 monthly summary for jasmin-lang/jasmin. Key focus: correctness and alignment with official ARM documentation for low-level arithmetic instructions. No new user-facing features beyond correctness improvements; significant improvement in semantics for long multiplication operations to ensure standards compliance and predictable behavior across platforms.