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gh-140513: Fail to compile if _Py_TAIL_CALL_INTERP is set but preserve_none and musttail do not exist. (GH-140548)
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Co-authored-by: Chris Eibl <138194463+chris-eibl@users.noreply.github.com>
This commit is contained in:
Krishna Chaitanya
GitHub
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2 changed files with 10 additions and 0 deletions
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@ -79,6 +79,14 @@
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#endif
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#if _Py_TAIL_CALL_INTERP
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# if defined(__clang__) || defined(__GNUC__)
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# if !_Py__has_attribute(preserve_none) || !_Py__has_attribute(musttail)
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# error "This compiler does not have support for efficient tail calling."
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# endif
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# elif defined(_MSC_VER) && (_MSC_VER < 1950)
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# error "You need at least VS 2026 / PlatformToolset v145 for tail calling."
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# endif
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// Note: [[clang::musttail]] works for GCC 15, but not __attribute__((musttail)) at the moment.
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# define Py_MUSTTAIL [[clang::musttail]]
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# define Py_PRESERVE_NONE_CC __attribute__((preserve_none))
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