Marko Mäkelä dfa90257f6 MDEV-30936 clang 15.0.7 -fsanitize=memory fails massively ...

handle_slave_io(), handle_slave_sql(), os_thread_exit():
Remove a redundant pthread_exit(nullptr) call, because it
would cause SIGSEGV.

mysql_print_status(): Add MEM_MAKE_DEFINED() to work around
some missing instrumentation around mallinfo2().

que_graph_free_stat_list(): Invoke que_node_get_next(node) before
que_graph_free_recursive(node). That is the logical and
MSAN_OPTIONS=poison_in_dtor=1 compatible way of freeing memory.

ins_node_t::~ins_node_t(): Invoke mem_heap_free(entry_sys_heap).

que_graph_free_recursive(): Rely on ins_node_t::~ins_node_t().

fts_t::~fts_t(): Invoke mem_heap_free(fts_heap).

fts_free(): Replace with direct calls to fts_t::~fts_t().

The failures in free_root() due to MSAN_OPTIONS=poison_in_dtor=1
will be covered in MDEV-30942.

2023-03-28 11:44:24 +03:00

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