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GH-49772: [C++] Bump bundled mimalloc version#49801

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raulcd wants to merge 4 commits intoapache:mainfrom
raulcd:GH-49772
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GH-49772: [C++] Bump bundled mimalloc version#49801
raulcd wants to merge 4 commits intoapache:mainfrom
raulcd:GH-49772

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@raulcd
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@raulcd raulcd commented Apr 20, 2026

Rationale for this change

mimalloc 3.3.0 was released with a bunch of potentially useful improvements or fixes.

What changes are included in this PR?

Bump bundled mimalloc to 3.3.0

Are these changes tested?

Yes, via Archery

Are there any user-facing changes?

No

@raulcd raulcd added CI: Extra: C++ Run extra C++ CI CI: Extra: R Run extra R CI labels Apr 20, 2026
@pitrou
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pitrou commented Apr 20, 2026

3.3.1 was just released, FTR :)

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