GH-129817: thread safety for tp_flags #144624

Job	Run time
Change detection / Create context from changed files	10s
Check if Autoconf files are up to date	22s
Check if generated files are up to date	3m 53s
Docs	0s
Address sanitizer (ubuntu-24.04)	10m 13s
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 3.0.15)	2m 41s
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 3.1.7)	2m 35s
Windows MSI${{ '' }}	0s
Cross build Linux	3m 38s
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 3.2.3)	2m 35s
Hypothesis tests on Ubuntu	7m 9s
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 3.3.2)	2m 32s
CIFuzz (address)	20m 3s
Ubuntu SSL tests with OpenSSL (ubuntu-24.04, 3.4.0)	2m 57s
CIFuzz (undefined)	22m 56s
CIFuzz (memory)	21m 46s
WASI / build and test	4m 34s
Windows / build (arm64)	3m 10s
Windows (free-threading) / build (arm64)	3m 20s
Windows / build and test (Win32)	17m 17s
Windows / build and test (x64)	15m 37s
Windows (free-threading) / build and test (x64)	22m 34s
macOS (free-threading) / build and test (ghcr.io/cirruslabs/macos-runner:sonoma)	3m 55s
macOS / build and test (ghcr.io/cirruslabs/macos-runner:sonoma)	3m 55s
macOS / build and test (macos-13)	8m 18s
Thread sanitizer / Thread sanitizer	5m 33s
Thread sanitizer (free-threading) / Thread sanitizer	9m 38s
Ubuntu / build and test (ubuntu-24.04-arm)	7m 24s
Ubuntu / build and test (ubuntu-24.04)	9m 8s
Ubuntu (free-threading) / build and test (ubuntu-24.04)	14m 1s
Ubuntu (free-threading) / build and test (ubuntu-24.04-arm)	13m 8s
Ubuntu (bolt) / build and test (ubuntu-24.04)	14m 35s
All required checks pass	1s
	4h 19m 38s

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