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gh-134070: Fix mi_clz32/mi_ctz32 to prevent out-of-bounds read (GH-134149)#134157
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Please do not open multiple PRs. Close either of the two. |
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I'm going to close this one: see#134149 (comment). |
I'm sorry for this,fresh contributor still learning! |
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Fixed an out-of-bounds read in the generic implementation of
mi_clz32andmi_ctz32in the integrated mimalloc allocator.This issue could occur on platforms with 64-bit unsigned long values.
The fix follows the approach from the upstream patch in microsoft/mimalloc:
microsoft/mimalloc@ed3184752c80f73e362