conditionally disable mimalloc override/hook

[Kamayuq]

I have not found any but is there an option to conditionally disable mimalloc on startup and forward all calls to the system allocator instead? This is mainly for using it together with ASan or whendoing A/B performance testing.

If it's not available already a possible option to trigger this would be the use of an environment variable before startup.

[daanx]

On Windows with dynamic override (using mimalloc-redirect.dll), you can set the environment variable MIMALLOC_DISABLE_REDIRECT=1 to disable dynamic redirection. (see the bin/readme.md for this)
Hope this helps!