fix compatibility between hardening and asan

[mstetsyuk]

In the PR where I enabled the hardening, there's an ASan error which is consistent and unique to the PR, see cidb).

It occurs in unique_ptr code:

#0 0x55e850dee87e in std::__1::unique_ptr<DB::(anonymous namespace)::AggregateFunctionThrowData [], std::__1::default_delete<DB::(anonymous namespace)::AggregateFunctionThrowData []>>::operator[][abi:fe210105](unsigned long) const ci/tmp/build/./contrib/llvm-project/libcxx/include/__memory/unique_ptr.h:581:5

because __in_bounds reads array cookie directly from memory which is marked as poisoned by the sanitizer.

That should be read via __asan_load_cxx_array_cookie (code) instead as it checks if the memory is marked as kAsanArrayCookieMagic and if so, just returns the cookie.

[thevar1able]

LGTM, let's upstream this change?

[rschu1ze]

Yes, this ^^

[mstetsyuk]

LGTM, let's upstream this change?

I will do that asynchronously with merging this PR, so that this effort doesn't get blocked.