MINOR: Fix IOOBE in ListVector/LargeListVector.getFieldBuffers() for never-allocated offset buffer#27

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prashanthbdremio wants to merge 11 commits into

dremio_27.0_23_19from

fix/list-vector-offset-buffer-ioobe

Commits on Jun 18, 2026

Fix IOOBE in ListVector/LargeListVector.setReaderAndWriterIndex()

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Add regression tests for never-allocated ListVector/LargeListVector

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Narrow realloc guard to capacity==0 only

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Move fix from setReaderAndWriterIndex() to getFieldBuffers()

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Fix regression tests to match getFieldBuffers() approach

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Fix spotless formatting in test files

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Fix temp buffer leak: assign to this.offsetBuffer in getFieldBuffers()

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Use (valueCount + 1) * OFFSET_WIDTH instead of offsetAllocationSizeInBytes

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Allocate default-sized offset buffer to avoid validate-then-write regression

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MINOR: Scope empty list offset buffer fix to empty vectors
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MINOR: Reset shared empty validity buffer for empty lists
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