Release 2026.8 (#1072)

[mariusarvinte]

🎉 Major Updates

• Improved data structure translation: C structs are now first-class citizens and get their own translation prompt + self-generated ahead-of-time unit tests that test the C-to-Rust-to-C roundtrip.

• Improved C context building: Introduced a new, multi-dimensional static analysis heuristic that helps with inferring 2-hop separated void pointer specialization and many other translation issues.

• Test generation agent v2.0: A complete revamp of ideas.agents.testgen -> ideas.agents.generate_io_tests that is better pre-instrumented, includes running ASan and UBSan separate from data collection, and is generally controlled much tighter.

Note

Test generation is still experimental for large-scale projects (10,000+ lines of code), but keep an eye on future releases for more improvements.

🎈 Minor Updates

• IDEAS now idiomatically produces and uses three closely related crates during translation: target, target-rs, target-sys. Look for the guaranteed safe translation in target-rs.
• Added REDUCED_CONTEXT option and defaulted it to True — disable it using REDUCED_CONTEXT=0 to include all wrapper into wrapper generation context.

Caution

Using REDUCED_CONTEXT=0 can lead to significant token cost increases for large-scale projects (10,000+ lines of code).

• Better Docker developer experience.
• Better README.md and clearer instructions.
• More robust cost estimation with make examples/cost.

Note

There may be some discrepancies because of litellm cost reporting. We recommend using the higher figure to be more conservative while we investigate this.

• Significantly reduced number of transitive dependencies.

🚧 Bug Fixes

• Fixed more ideas.consolidate bugs and added known limitations (related to C's ODR) as expected test failures.

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