use of uninitialized memory in wsrep_rec_get_primary_key()

[Teemu Ollakka]

Offsets array in wsrep_rec_get_primary_key() is initialized as

 ulint offsets_[REC_OFFS_NORMAL_SIZE];

 ut_ad(index);
 key_parts = dict_index_get_n_unique_in_tree(index);
 *offsets_ = (sizeof offsets_) / sizeof *offsets_;

 rec_get_offsets(rec, index, offsets_, ULINT_UNDEFINED, &heap);

However, rec_get_offsets() may allocate new block of memory if number of returned offsets won't fit in offsets_ array. In this case offsets_ array remains uninitialized. Code following this initialization should use pointer returned by rec_get_offsets() instead.

[Teemu Ollakka (teemu-ollakka)]

Fix committed in lp:codership-mysql/5.5 revno 3734