MDEV-36482: Make liburing work WITH_MSAN=ON #4195
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Description
same concept as #3949.
A read from liburing has its output buffer as defined by the nature of the system call.
Instrumenting the library proved difficult as the
completion events don't include the opcode or pointers that where there on submission. It was just easier to do this in the application code.
Release Notes
non-user facing.
How can this PR be tested?
compile in msan environment and run test suite with uring.
Basing the PR against the correct MariaDB version
main
branch.PR quality check