(arrow) branch main updated: GH-49772: [C++] Bump bundled mimalloc version (#49801)

[raulcd]

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The following commit(s) were added to refs/heads/main by this push:
     new f0beefb1f9 GH-49772: [C++] Bump bundled mimalloc version (#49801)
f0beefb1f9 is described below

commit f0beefb1f93855e5c26526259b965c6f0e75503c
Author: Raúl Cumplido <raulcumpl...@gmail.com>
AuthorDate: Tue May 5 10:13:57 2026 +0200

    GH-49772: [C++] Bump bundled mimalloc version (#49801)
    
    ### Rationale for this change
    
    mimalloc 3.3.1 was released with a bunch of potentially useful improvements 
or fixes.
    
    ### What changes are included in this PR?
    
    Bump bundled mimalloc to 3.3.1
    
    ### Are these changes tested?
    
    Yes, via Archery
    
    ### Are there any user-facing changes?
    
    No
    
    * GitHub Issue: #49772
    
    Lead-authored-by: Raúl Cumplido <raulcumpl...@gmail.com>
    Co-authored-by: Sutou Kouhei <k...@cozmixng.org>
    Signed-off-by: Raúl Cumplido <raulcumpl...@gmail.com>
---
 cpp/cmake_modules/ThirdpartyToolchain.cmake | 1 +
 cpp/thirdparty/versions.txt                 | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/cpp/cmake_modules/ThirdpartyToolchain.cmake 
b/cpp/cmake_modules/ThirdpartyToolchain.cmake
index cc632a62fe..28d9b350b3 100644
--- a/cpp/cmake_modules/ThirdpartyToolchain.cmake
+++ b/cpp/cmake_modules/ThirdpartyToolchain.cmake
@@ -2431,6 +2431,7 @@ if(ARROW_MIMALLOC)
   set(MIMALLOC_C_FLAGS ${EP_C_FLAGS})
   if(MINGW)
     # Workaround https://github.com/microsoft/mimalloc/issues/910 on RTools40
+    # This is still required as of mimalloc 3.3.1, tested as part of GH-49772
     set(MIMALLOC_C_FLAGS "${MIMALLOC_C_FLAGS} -DERROR_COMMITMENT_MINIMUM=635")
   endif()
 
diff --git a/cpp/thirdparty/versions.txt b/cpp/thirdparty/versions.txt
index 82a780285e..3af4a10a50 100644
--- a/cpp/thirdparty/versions.txt
+++ b/cpp/thirdparty/versions.txt
@@ -80,8 +80,8 @@ ARROW_JEMALLOC_BUILD_VERSION=5.3.0
 
ARROW_JEMALLOC_BUILD_SHA256_CHECKSUM=2db82d1e7119df3e71b7640219b6dfe84789bc0537983c3b7ac4f7189aecfeaa
 ARROW_LZ4_BUILD_VERSION=v1.10.0
 
ARROW_LZ4_BUILD_SHA256_CHECKSUM=537512904744b35e232912055ccf8ec66d768639ff3abe5788d90d792ec5f48b
-ARROW_MIMALLOC_BUILD_VERSION=v3.2.7
-ARROW_MIMALLOC_BUILD_SHA256_CHECKSUM=33621bea902711639b8f83128e64685ffc8224a65443625530747603a2d8726d
+ARROW_MIMALLOC_BUILD_VERSION=v3.3.1
+ARROW_MIMALLOC_BUILD_SHA256_CHECKSUM=42c16914168ac6741eeb407e83b93a12b2b7ee25a7e14e6b4807fab8b577a540
 ARROW_NLOHMANN_JSON_BUILD_VERSION=v3.12.0
 
ARROW_NLOHMANN_JSON_BUILD_SHA256_CHECKSUM=4b92eb0c06d10683f7447ce9406cb97cd4b453be18d7279320f7b2f025c10187
 ARROW_OPENTELEMETRY_BUILD_VERSION=v1.21.0