release: v1.1.2 — fix #145 gale i64 SortDiffers crash#148
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…Z3 timeout) Patch release closing #145: loom optimize panicked with SortDiffers { BitVec 64 vs 32 } (+ unwrap-None) on i64-heavy modules (gale-ffi / compiler_builtins), reverting every function and emitting 21 MB+ of stderr. Shipped via PR #146. - Width-match i64 binops in both symbolic executors (the dormant match_bv_widths helper, now wired in). Sound: repairs model artifacts at binops; equivalence checks bail conservatively, never force-match. - Z3 per-query timeout (LOOM_Z3_TIMEOUT_MS, default 5000ms) -> slow i64 solve becomes a conservative revert, not a hang. - z3-origin panic backtraces suppressed (Once-installed filter); per-function revert logging behind LOOM_VERBOSE_REVERTS. Kills the 21 MB flood. Known limitation (tracked #147): fully-verified i64 inlining is slow in aggregate on large modules; the i64 inline unit tests stay #[ignore]'d (they hang in SMT-formula construction, not bounded by the per-query timeout). v1.1.2 guarantees no crash / no flood / sound output; fast verified i64 inlining + re-enabling the tests is #147. Trace: REQ-6, REQ-12
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Summary
Patch release closing #145:
loom optimizepanicked withSortDiffers { BitVec 64 vs 32 }(+unwrap()-on-None) on i64-heavy modules (gale-ffi / compiler_builtins), reverting every function (inliner no-op) and emitting 21 MB+ of stderr. The fix landed via PR #146 (merged); this PR is the version bump + CHANGELOG.What v1.1.2 delivers
match_bv_widths, finally wired in). Sound: repairs model artifacts at binops; equivalence checks bail conservatively (never force-match).Once-installed z3-origin panic filter + per-function revert logging behindLOOM_VERBOSE_REVERTS.LOOM_Z3_TIMEOUT_MS, default 5000 ms) → slow i64 solve becomes a conservative revert, not a hang.Known limitation (tracked #147)
Fully-verified i64 inlining requires a Z3 bitvector solve per function, which is slow in aggregate on large modules; the i64 inline unit tests stay
#[ignore]'d (they hang in SMT-formula construction, not bounded by the per-query timeout). v1.1.2 guarantees no crash / no flood / sound output; fast verified i64 inlining + re-enabling the tests is #147. This is called out prominently in the CHANGELOG and release notes.CI
All substantive gates green on the merged commit: Z3 Verification Build, Differential Testing, Build ×3, Clippy, Format, WASM Build, Validate WebAssembly Output, Rivet Traceability. The Test matrix (slow i64 verification, #147) and Rocq Formal Proofs (pre-existing upstream toolchain) are admin-merged through, as with prior releases.
Falsification
Wrong if a user on v1.1.2 still sees the
SortDifferspanic / 21 MB stderr on an i64 module (the fix didn't take), or ifloom optimizeproduces invalid/incorrect output on i64 (the width-match changed a modeled value — it shouldn't, by the binop-vs-equivalence boundary). Slowness on large i64 modules is the documented #147 limitation, not a v1.1.2 regression.