Starting with MDEV-8139, fil_space_t is no longer trivially constructible. In fil_space_t::create(), the object is being constructed using the following antipattern:
/* FIXME: if calloc() is defined as an inline function that calls
|
memset() or bzero(), then GCC 6 -flifetime-dse can optimize it away */
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*after = space = new (ut_zalloc_nokey(sizeof(*space))) fil_space_t;
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|
space->id = id;
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|
UT_LIST_INIT(space->chain, &fil_node_t::chain);
|
|
space->purpose = purpose;
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space->flags = flags;
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This needs to be refactored to an explicit fil_space_t::fil_space_t(), which will initialize all data fields, something like the following:
*after = space = new (ut_malloc_nokey(*space)) fil_space_t(id, flags, purpose, crypt_data, mode);
|
The fil_space_t::latch member will need some special care, because outside SUX_LOCK_GENERIC the implementation expects that the object be zero-initialized.
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