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MDEV-27924 page_zip_copy_recs() corrupts ROW_FORMAT=COMPRESSED block …
…descriptor In commit aaef2e1 (MDEV-27058) we failed to introduce a special copy constructor that would preserve the "page_zip_des_t::fix" field that only exists there in order to avoid alignment loss on 64-bit systems. page_zip_copy_recs(): Invoke the special copy constructor. The block descriptor corruption causes assertion failures when running ./mtr --suite=innodb_zip while InnoDB has been built with UNIV_ZIP_COPY. Normally, calls to page_zip_copy_recs() occur very rarely on page splits.
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