Mmap @test length(#= /usr/home/julia/.buildkite-agent/builds/freebsd13-amdci6-3/julialang/julia-master/julia-333391feb8/share/julia/stdlib/v1.13/Mmap/test/runtests.jl:29 =# @inferred(mmap(file, Matrix{Int8}, (12, 1), 0; grow = false))) == 12