Sergei Golubchik daca7e70d7 MDEV-17898 FLUSH PRIVILEGES crashes server with segfault ...

merge_role_db_privileges() was remembering pointers into Dynamic_array
acl_dbs, and later was using them, while pushing more elements into the
array. But pushing can cause realloc, and it can invalidate all pointers.

Fix: remember and use indexes of elements, not pointers.

2018-12-06 14:22:07 +01:00

382 KiB

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