atomics @test_throws nothing #= /Users/julia/.julia/scratchspaces/a66863c6-20e8-4ff4-8a62-49f30b1f605e/agent-cache/default-honeycrisp-HL2F7YQ3XH.0/build/default-honeycrisp-HL2F7YQ3XH-0/julialang/julia-master/julia-7c1559a687/share/julia/test/atomics.jl:773 =# @atomiconce :not_atomic a.x = 2