Michael Widenius b378ddb3d3 MDEV 22785 Crash with prepared statements and NEXTVAL() ...

The problem was that a PREARE followed by a non prepared statement
using DEFAULT NEXT_VALUE() could change table->next_local to point to
a not persitent memory aria. The next EXECUTE would then try to use
the wrong pointer, which could cause a crash.
Fixed by reseting the pointer to it's old value when doing EXECUTE.

2021-08-26 07:07:46 +03:00

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