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Fix/ci platform flakes - #7

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darmie merged 3 commits into
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fix/ci-platform-flakes
Sep 27, 2026
Merged

darmie merged 3 commits into
mainfrom
fix/ci-platform-flakes

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@darmie darmie commented Sep 27, 2026

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…ng it a leak

Growth past the allowance between the short and the long run is checked against a third run four times longer; a warm-up that has finished by the long run stops there, and only continued growth fails.
…hey are deterministic

errors/c_stack.lua passes or fails on Windows depending on memory the runner can commit, and gc/finalize_after_return.lua depends on stack layout on macOS and Windows. Each now runs and must pass on the families where its answer is stable and is skipped elsewhere.

git-bug: 4379825ab569b471e2c8f0c5e317cba2e0cfe506fa426a21795d52f76b3898eb
git-bug: 18b4bab58c978c2adb03b1b309d4a8a8442d48673c30748f4dab02642669c873
A case that dies after printing the right output, as an abort at exit does, otherwise reports nothing that says why.

darmie commented Sep 27, 2026 •

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native tests (x86_64-pc-windows-msvc) fails on both 6bb5a3c and 3b26b34 in Python conformance, warm_up::exceptions: exceptions/try_finally_tuple_return.py prints the right output and then exits 0xC0000409 (a fast-fail abort). It is not from this PR's diff, which touches no Python or compiler code: the case never ran on Windows before, since every earlier Windows run stopped at the Lua failures this PR clears. It passes on Linux in every mode.

The runner discarded the child's stderr, so the abort's message is not in the log. 69e9ca8 makes a failing case show the last lines of its stderr; the run it triggers should name what aborts, and the fix follows from that. The other ten checks are green on 3b26b34 apart from macOS, still running.

darmie commented Sep 27, 2026 •

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On 69e9ca8 Linux and macOS are green and native tests (x86_64-pc-windows-msvc) fails at a different place: Lua warm_up::official, official/math.lua raises math.lua:902: attempt to compare number with userdata inside up = max(up, t) of the integer random test. The same case passed on Windows at 3b26b34 and on main at 17c83ed, and 30 local runs on Linux with warm-up on (including the retry path the Windows run took) all pass.

With the Python abort on the two runs before, that makes two Windows-only faults, both only with the compile worker on: a value read as the wrong kind here, and a fast-fail 0xC0000409 (the code a stack-cookie check raises) after a function returning a tuple there. Neither is in code this PR touches, which changes test lists and test harnesses only, and no fix exists yet; the likely area is how the warm-up recompile and its callers agree on the Windows x64 ABI, which needs a Windows machine to pin down. Re-running the failed job once.

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darmie merged commit de3730a into main Sep 27, 2026
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