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authorTor Didriksen <tor.didriksen@oracle.com>2014-08-21 16:42:04 +0200
committerTor Didriksen <tor.didriksen@oracle.com>2014-08-21 16:42:04 +0200
commitab727cec049d20a86e1ca8ab2860d73dc476b73a (patch)
tree154539e0112e90cd676ed4dd010caa6451ca390e /extra/yassl/taocrypt/src/dh.cpp
parentc2fc7d39b23b80bf75d88ea1a1fb078c84380742 (diff)
downloadmariadb-git-ab727cec049d20a86e1ca8ab2860d73dc476b73a.tar.gz
Bug#18928848 II. MALLOC OF UNINITIALIZED MEMORY SIZE
Several string functions have optimizations for constant sub-expressions which lead to setting max_length == 0. For subqueries, where we need a temporary table to holde the result, we need to ensure that we use a VARCHAR(0) column rather than a CHAR(0) column when such expressions take part in grouping. With CHAR(0) end_update() may write garbage into the next field.
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