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Title: gh-146261: JIT: protect against function version changes by Fidget-Spinner · Pull Request #146300 · python/cpython · GitHub

Open Graph Title: gh-146261: JIT: protect against function version changes by Fidget-Spinner · Pull Request #146300 · python/cpython

X Title: gh-146261: JIT: protect against function version changes by Fidget-Spinner · Pull Request #146300 · python/cpython

Description: This PR reverts the func_version symbol changes by using the fact that we have recorded values and _CHECK_FUNCTION_VERSION guards --- if we simply keep those around and not eliminate them, our function versions are guaranteed to be correct for all following _PUSH_FRAME if we invalidate dependencies properly in the function version changes. Issue: gh-146261

Open Graph Description: This PR reverts the func_version symbol changes by using the fact that we have recorded values and _CHECK_FUNCTION_VERSION guards --- if we simply keep those around and not eliminate them, our func...

X Description: This PR reverts the func_version symbol changes by using the fact that we have recorded values and _CHECK_FUNCTION_VERSION guards --- if we simply keep those around and not eliminate them, our func...

Opengraph URL: https://github.com/python/cpython/pull/146300

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a1ef342 JIT: protect against function version changes Fidget-Spinner Mar 22, 2026 https://github.com/python/cpython/pull/146300/commits/a1ef342c2669d2b626ac460091fd0c0fd9368a0b
dc19d93 pass the interp Fidget-Spinner Mar 22, 2026 https://github.com/python/cpython/pull/146300/commits/dc19d93e7201ee067e0ab04cb6a584cf2b5b7e06
463ed28 Update Objects/funcobject.c Fidget-Spinner Apr 6, 2026 https://github.com/python/cpython/pull/146300/commits/463ed287cce7c1070e5ea224d9c324dfabe7796f
ff29164 Merge remote-tracking branch 'upstream/main' into fix_func_version_ch… Fidget-Spinner Apr 12, 2026 https://github.com/python/cpython/pull/146300/commits/ff29164c76eae4163ffa28f5ca3c2798740902aa
9dd70a0 remove func version symbol altogether --- to buggy without watchers Fidget-Spinner Apr 12, 2026 https://github.com/python/cpython/pull/146300/commits/9dd70a02e5792a78508624afe462ea4a03d8ef78
8806c74 Fixups Fidget-Spinner Apr 12, 2026 https://github.com/python/cpython/pull/146300/commits/8806c74b0e172217138fa4e868a392f83945a403
6a42001 Add back test properly Fidget-Spinner Apr 12, 2026 https://github.com/python/cpython/pull/146300/commits/6a42001dc9e97ca62ecb5965ed028b1284e194f4
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