All calls to VmaFree (at least) in the vk_mem_alloc.h header fails with:

error: no matching function call to 'VmaFree'

There is an issue open in the LLVM project, not sure who is to blame or if there's some workaround, or if it will just be broken until new clang version has been released, llvm/llvm-project#157327

This surfaces when used as a C++ module, for example via https://github.com/YaaZ/VulkanMemoryAllocator-Hpp.