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Check early whether tail-calling is possible for MSVC builds on Windows #148047
Description
Rather than failing late when compiling e.g. a debug configuration
build.bat -c debug --tail-call-interp
with hundreds of
error C4737: Unable to perform required tail call. Performance may be degraded.
lets fail early with an explicit error message for configurations that are not supported by MSVC.
This is a follow-up on #140513 / #140548.
Activity
[-]Check early whether tail calling is possible for MSVC builds on Windows[/-][+]Check early whether tail-calling is possible for MSVC builds on Windows[/+]GH-148047: Check early whether tail-calling is possible for MSVC buil…
itamaro commentedon Apr 12, 2026
merged, thank you!
Revert "pythonGH-148047: Check early whether tail-calling is possible…
gh-148047: Revert "GH-148047: Check early whether tail-calling is pos…
pythonGH-148047: Check early whether tail-calling is possible for MSV…
pythongh-148047: Revert "pythonGH-148047: Check early whether tail-ca…