CXX      vma_random_test-vma_random_test.o
vma_random_test.cpp:239:18: error: non-constant-expression cannot be narrowed from type 'unsigned long' to 'uint_fast32_t' (aka 'unsigned int') in initializer list [-Wc++11-narrowing]
   random_test r{seed};
                 ^~~~
vma_random_test.cpp:239:18: note: insert an explicit cast to silence this issue
   random_test r{seed};
                 ^~~~
                 static_cast<uint_fast32_t>( )

commit 943fecc5691b55b8ce8740d133dd70614effb72d
Author: Scott D Phillips <scott.d.phillips@intel.com>
Date:   Fri May 4 17:11:13 2018 -0700

    util: Add a randomized test for the virtual memory allocator
    
    The test pseudo-randomly makes allocations and deallocations with
    the virtual memory allocator and checks that the results are
    consistent. Specifically, we test that:
    
     * no result from the allocator overlaps an already allocated range
     * allocated memory fulfills the stated alignment requirement
     * a failed result from the allocator could not have been fulfilled
     * memory freed to the allocator can later be allocated again
    
    v2: - fix if() in test() to actually run fill()
    v3: - add c++11 build flag (Jason)
        - test the full 64-bit range (Jason)
    
    Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>