[Backport release-1.11] [c++] Pass in a shared_ptr<Context> to _create_dim_aux
#2646
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* Derefencing and passing a `Context` object into `_create_dim_aux` prematurely decrements a reference count to the `Context` which then garbage collects the object. When we attempt to reference the `shared_ptr<Context>` again, it is invalid and segfaults * Fixes intermittent bug in Release mode that is consistently reproducible in Debug mode
johnkerl
approved these changes
May 25, 2024
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Backport c0ee2df from #2645