gh-148775: Bump c-analyzer MAX_SIZES for Modules/clinic/_testclinic.c.h

[ashm-dev]

make check-c-globals fails on main because Modules/clinic/_testclinic.c.h (auto-generated by Argument Clinic) has grown past the MAX_SIZES limit set in Tools/c-analyzer/cpython/_parser.py. Bump 120_000 → 200_000.

No Misc/NEWS.d entry — tooling-only change to the c-analyzer parser limits. Please apply the skip news label.

Fixes #148775.

• Issue: c-analyzer: bump MAX_SIZES for Modules/clinic/_testclinic.c.h #148775

[ashm-dev]

@ericsnowcurrently could you please review this PR?

[ashm-dev]

Friendly ping — rebased onto current main (the previous 125_000 bump turned out to be insufficient: Modules/clinic/_testclinic.c.h is now ~137k bytes, so 200_000 leaves real headroom). One-line diff, no conflicts. @ericsnowcurrently @vstinner could one of you take a quick look?

[ashm-dev]

The Ubuntu (free-threading) / build and test failure is unrelated — the runner received a shutdown signal mid-run (exit code 143, "runner has received a shutdown signal"). All tests passed up to that point. A rerun should be green.

[vstinner]

I fail to reproduce the issue: #148775 (comment).

[ashm-dev]

Thanks for checking, @vstinner — confirmed, make check-c-globals is green on current main. The trigger was transient: _testclinic.c.h is re-generated by Argument Clinic, so the measured section size drifts up and down as test converters / defaults are added or removed.

That said, I'd argue for merging this preventively rather than closing:

• The previous bump (120_000 → 125_000) was folded into 99e2c5eccd2 (Argument Clinic: the Py_buffer converter only accepts None as the default value #144545, 2026-03-17) — not a standalone change, just a side-effect of a larger AC refactor.
• Roughly one month later (this issue, 2026-04-19) the section hit 120_058 bytes — i.e. the 5 KB headroom granted by that bump was consumed almost immediately. The current pass is just luck of the current AC output.
• One-character diff, no Misc/NEWS.d entry, no behavioural change. Bumping to 200_000 leaves ~70 KB headroom — enough to absorb several release cycles of AC churn without re-opening a near-identical issue.

If you'd prefer a different shape, I'm equally happy to:
(a) raise the limit by a smaller amount (e.g. 150_000), or
(b) drop Modules/clinic/_testclinic.c.h from the size check altogether — it's a test fixture, not production code, so the "too much text" guard arguably doesn't buy much there.

Let me know which you'd rather see.