Fix array.init_elem to use source offset when reading segment data#8349
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sumleo wants to merge 2 commits intoWebAssembly:mainfrom
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Fix array.init_elem to use source offset when reading segment data#8349sumleo wants to merge 2 commits intoWebAssembly:mainfrom
sumleo wants to merge 2 commits intoWebAssembly:mainfrom
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The interpreter's visitArrayInitElem was ignoring the source offset parameter when reading from the element segment. It used seg->data[i] instead of seg->data[offsetVal + i], meaning it always read from the beginning of the segment regardless of the specified offset. The offset was already correctly computed and used in the bounds check, but not in the actual data access loop. This is now consistent with how visitArrayInitData handles its offset parameter.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
visitArrayInitElemwhere the source offset parameter was ignored when reading from the element segmentseg->data[i]instead ofseg->data[offsetVal + i], always reading from the start of the segment regardless of the specified offsetvisitArrayInitDataTest plan
binaryen-unittests)