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make regen-all is not deterministic #108740

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type-bugAn unexpected behavior, bug, or error
@vstinner

Description

@vstinner

Bug report

Checklist

  • I am confident this is a bug in CPython, not a bug in a third-party project
  • I have searched theCPython issue tracker,
    and am confident this bug has not been reported before

CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux

Output from running 'python -VV' on the command line:

No response

A clear and concise description of the bug:

Themake regen-all command is not deterministic. Depending in the order in which the target dependencies are executed, the result change.

regen1.sh:

set -e -xgit checkout .git checkout 79823c103b66030f10e07e04a5462f101674a4fc# WARNING: it removes all untracked files!git clean -fdx./configure --with-pydebugmake regen-casesmake regen-typeslotsmake regen-tokenmake regen-astmake regen-keywordmake regen-sremake regen-frozenmake regen-pegen-metaparsermake regen-pegenmake regen-test-frozenmainmake regen-test-levenshteinmake clinicmake regen-global-objectsechogrep 'ID(traceback)' Python/deepfreeze/deepfreeze.c || trueechowc -l Python/deepfreeze/deepfreeze.c

regen2.sh:

set -e -xgit checkout .git checkout 79823c103b66030f10e07e04a5462f101674a4fc# WARNING: it removes all untracked files!git clean -fdx./configure --with-pydebugmake clinicmake regen-global-objectsmake regen-casesmake regen-typeslotsmake regen-tokenmake regen-astmake regen-keywordmake regen-sremake regen-frozenmake regen-pegen-metaparsermake regen-pegenmake regen-test-frozenmainmake regen-test-levenshteinechogrep 'ID(traceback)' Python/deepfreeze/deepfreeze.c || trueechowc -l Python/deepfreeze/deepfreeze.c

regen1.sh output:

(...)            &_Py_ID(traceback),            &_Py_ID(traceback),146433 Python/deepfreeze/deepfreeze.c

regen2.sh output:

(...)146543 Python/deepfreeze/deepfreeze.c
  • Usingregen1.sh, there is atraceback identfier inPython/deepfreeze/deepfreeze.c.
  • Usingregen1.sh, thereis notraceback identfier inPython/deepfreeze/deepfreeze.c.

These commands are coming fromregen-all inMakefile.pre.in:

regen-all: regen-cases regen-typeslots \        regen-token regen-ast regen-keyword regen-sre regen-frozen clinic \        regen-pegen-metaparser regen-pegen regen-test-frozenmain \        regen-test-levenshtein regen-global-objects

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