- Dispatch (linux_fastcgi.cpp): route every request through wasm. On a
cold/stale artifact, compile the unit on demand (get_shared_unit, forced) and
serve wasm; native compiler_invoke* remains only as a fallback when wasm
cannot be made ready (compile failure / backend disabled). Applies to the 4
handle_complete branches and the CLI socket path.
- backend.cpp: delete the now-vestigial native-only fallback token gate
(wasm_backend_native_fallback_*), empty since W7d; should_handle now gates on
config + current artifact + healthy worker only.
- check_unit_wasm.py: skip the defense-in-depth llvm-nm allocator scan when
llvm-nm SIGSEGVs on a degenerate-but-valid module (e.g. a unit with no
exported handlers). Fixes site/demo/empty.uce, the last unit that could not
produce a .wasm; forbidden allocator *exports* are still rejected.
A pi-assisted review caught that the compile-freshness check keys off the .so
mtime only, so force_recompile is required to rebuild a missing/stale .wasm; a
unit already cached in-process whose .wasm later vanished still uses native
fallback (closed in W7e stage B). Native execution is otherwise bypassed for
all real traffic.
Verified: scripts/run_cli_tests.sh --include-wasm-kill -> 87 passed, 0 failed.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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