"
There is an exception safety problem in imr::utils::object. If multiple
memory allocations are needed and one of them fails the main object is
going to be freed (as expected). However, at this stage it is not
constructed yet, so when LSA asks its migrator for the size it may get
a meaningless value. The solution is to remember the size until object
is fully created and use sized deallocation in case of failures.
Fixes#3618.
Tests: unit(release, debug/imr_test)
"
(cherry picked from commit 3b42fcfeb2)
IMR objects may own memory. object_allocator takes care of allocating
memory for all owned objects during the serialisation of their owner.
In practice a writer of the parent object would accept a helper object
created by object_allocator. That helper object would be either
responsible for computing the size of buffers that have to be allocated
or perform the actual serialisation in the same two phase manner as it
is done for the parent IMR object.
