pitrou commented on a change in pull request #12532:
URL: https://github.com/apache/arrow/pull/12532#discussion_r818697820
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File path: cpp/src/parquet/file_reader.cc
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@@ -146,6 +146,10 @@ ::arrow::io::ReadRange
ComputeColumnChunkRange(FileMetaData* file_metadata,
int64_t col_length = column_metadata->total_compressed_size();
int64_t col_end;
+ if (col_start < 0 || col_length < 0) {
+ throw ParquetException("Invalid column metadata (corrupt file?)");
Review comment:
I don't think that'd be useful. They are unlikely to arise of a
programming error in the writer (how do you get a negative length or file
offset?).
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