wai: the deterministic module profile, a checked subset of WebAssembly for the decoder modules a sink runs #640
2026-11-05
wai dev's test: the stand-in room service listens without a reverse lookup
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tests/cli_studio.rs failed on every run on one macOS runner and passed on
every other runner, 3 of 3 against 19 of 19 on 5 November, with "the room
service's clock on the relay: not within 30 s".
The stand-in room service starts an HTTPServer, whose server_bind calls
socket.getfqdn before the server listens. On that host, under the runner's
Python 3.15.2, getfqdn("127.0.0.1") takes 35 s, past the 30 s wai dev waits, and
a stack dump of the stalled stand-in shows it there. The stand-in relay opens a
plain socket and answers in 0.1 s. Nothing here reads the name, so the fixture
no longer asks for it.
On that host and Python the room stand-in took 35.5 s and now takes 0.12 s. A
socket.getfqdn planted to stall for 40 s fails the test without this change,
with the same message, and passes with it.
Changelog: none
Co-Authored-By: Claude Opus 5.5 <[email protected]>
wai/det-module-profile, converted to the layout of the fix: no shared append point
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The change of wai/det-module-profile (4e8e4fb09..45a7b4eb7, 2 commits), on the fix branch: its changelog entries as files of wai/changes/, its wai-conformance.yml edits as step files, corpus files and test tags, and every other file as the branch has it. - 9061cb07f wai: the deterministic module profile, a checked subset of WebAssembly for the decoder modules a sink runs - 45a7b4eb7 wai: the deterministic module profile: a record's key read from the grant's head; the scope of check 9; what the verifiers and corpora cover Co-Authored-By: Claude Opus 5.5 <[email protected]>