Fix case-arm shadowing UB, tail-loop preemption, and OOM diagnostics#1

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skyblanket merged 29 commits into

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claude/optimistic-allen-cfl8xg

Jun 10, 2026

Commits on Jun 9, 2026

fix(codegen): P0 — case-arm rebinding the scrutinee's name emitted C self-init UB
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fix(codegen): P0 — compiled tail loops never yielded; spawn storms died by VMA exhaustion
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fix(runtime): P1 — allocation failure now panics loud instead of SIGSEGV at nil
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docs: Round-7 audit report (Fable, June 2026) + two new known issues + TCO doc fix
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fix(lang): converge the two execution paths + make every failure loud
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test: dual-path conformance gate — every conform program must agree across swc run + swc build
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docs: error-model + new-surface reference; KNOWN_ISSUES — clear try/catch divergence, add interpreter depth
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feat(std): Std.map / Std.filter / Std.join — make the Elixir-shaped guess work
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docs: README — conformance gate + current test counts + Std aliases; Round-7 report continuation status
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feat(gc): Phase 2.1 — LeakSanitizer lifecycle gate (make lsan-gate + advisory CI leg)
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feat(diag+lang): real source paths, module-qualified did-you-mean, string_chars
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test+docs: Phase 2.2 scheduler-count matrix — bounded tests, S<3 skip for blocking-loopback, CI legs
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perf(sched): O4 — bounded spin-before-park; cross-scheduler ping-pong 58.4 -> 4.5us/rt (13x)
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docs: roadmap — Phase 2.1 + 2.2 DONE with findings; Round-7 table — O4/O6/O7 fixed
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Commits on Jun 10, 2026