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gh-113141: Upgrade mimalloc to upstream v3 - #159718

Draft

DinoV wants to merge 22 commits into

python:mainfrom

DinoV:mimallocv3

Draft

gh-113141: Upgrade mimalloc to upstream v3#159718
DinoV wants to merge 22 commits into
python:mainfrom
DinoV:mimallocv3

Commits on Oct 29, 2026
- Integrate mimalloc v3
  
  daanx
  authored and
  DinoV
  committed
  f10120f
- Allow __mi
  DinoV
  committed
  0fa01f3
- Use FLS init
  DinoV
  committed
  4e4375f
- Temporarily allow _ZSt
  DinoV
  committed
  06aef7b
- Set max warnings to 0
  DinoV
  committed
  ae32b0c
- Revert "Set max warnings to 0"
  DinoV
  committed
  ea41e82
- Define MI_TRACK_ASAN for GIL builds
  DinoV
  committed
  2f80abc
- Include less mimalloc everywhere
  DinoV
  committed
  f1a6712
- Use _Py_qsbr_poll when we have an attached thread state to match v2
  DinoV
  committed
  9380115
- Better _ZSt15get_new_handlerv fix
  DinoV
  committed
  227c04f
- Fix __ImageBase issue and revert FLS usage
  DinoV
  committed
  2b412cf
- Set defaults to v2 defaults to reduce memory usage
  DinoV
  committed
  8e19cb2
- Fix missing endif
  DinoV
  committed
  d39b31c
- More options
  DinoV
  committed
  e8351ce
- Update vendored mimalloc to upstream dev3
  DinoV
  committed
  dcf0299
- Add blurbit
  DinoV
  committed
  0f22640
- Experiment
  DinoV
  committed
  af31635
- Update mimalloc commit
  DinoV
  committed
  3ec99e9
- Add verify mimalloc workflow
  DinoV
  committed
  d549063
- Revert "Experiment"
  DinoV
  committed
  f0a7b43
- Update vendored mimalloc to caaf3bc41494e6b58ab32ed9c851b3c8b61a8f82
  DinoV
  committed
  45c37c5
- Update to mimallc v3.6.0
  DinoV
  committed
  ee23043