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Tatiana A. Nurnberg authored
It was possible to crash a mysqld build with EXTRA_DEBUG using CREATE TABLE ... COMMENT with a specially-crafted UTF-8 string. This CS removes the check that caused it since it no longer applies in current servers anyway, and adds comments instead to avoid future confusion. mysql-test/r/strict.result: Try to crash mysqld with a "suitable" multi-byte (3-byte UTF-8) string for a table comment. mysql-test/t/strict.test: Try to crash mysqld with a "suitable" multi-byte (3-byte UTF-8) string for a table comment. sql/unireg.cc: Talk at length about limits in .frm form-info, characters vs bytes, inlined vs extra-segement TABLE-COMMENTS, and the differences in 6.0+ vs <6.0 when it comes to UTF-8. Also, remove a check that no longer applies and that could lead to problems in pathological cases.
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