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`nextToken()` used the decoded union index without the range check that `skipValue()` already applies, so an out-of-range index surfaced as `ArrayIndexOutOfBoundsException` instead of `StreamReadException`. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
cowtowncoder
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UnionReader.nextToken()UnionReader.nextToken()
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UnionReader.nextToken()used the decoded union index directly, without the range check_decodeIndex()thatskipValue()already applies. An out-of-range index (too large, or negative) therefore surfaced asArrayIndexOutOfBoundsExceptionrather thanStreamReadException.This change makes
nextToken()use_decodeIndex()too. Unions with only scalar members were already covered byScalarDecoder._checkIndex().Adds
AvroUnionIndexBoundsTest, covering index 5 and -1 with both the native and Apache decoders. Without the fix, it fails withArrayIndexOutOfBoundsException: Index 5 out of bounds for length 2.🤖 Generated with Claude Code