addprocs breaks Base.compile/import?

[stevengj]

I encountered the following when testing #12302. Create a file FooBar.jl containing

module FooBar
end

and then execute:

addprocs(1)
Base.compile(:FooBar)
eval(Main, :(import FooBar))

and you get the error:

fatal error on 2: ERROR: cannot serialize a pointer
 in serialize at serialize.jl:105
 in serialize at serialize.jl:414
 in send_msg_ at multi.jl:222
 in send_msg_now at multi.jl:173
 in deliver_result at multi.jl:833
 in anonymous at task.jl:922
Worker 2 terminated.ERROR: LoadError: ProcessExitedException()
 in yieldto at ./task.jl:74
 in wait at ./task.jl:370
 in wait at ./task.jl:285
 in wait_full at ./multi.jl:631
 in remotecall_fetch at multi.jl:743
 in call_on_owner at ./multi.jl:790
 in fetch at multi.jl:798
 in _require_from_serialized at loading.jl:75
 in _require_from_serialized at ./loading.jl:93
 in require at ./loading.jl:122
 in include at ./boot.jl:254
 in include_from_node1 at ./loading.jl:200
 in process_options at ./client.jl:308
 in _start at ./client.jl:411
while loading /Users/stevenj/Code/julia/compilebug.jl, in expression starting on line 3

Deleting addprocs eliminates the error.

cc: @vtjnash

[timholy]

Possibly related to #12381?

[stevengj]

Wait, now I can't reproduce on master. Maybe it was only on my #12302 branch? Closing this unless I can make it occur on master.

[stevengj]

Okay, it was a bug in my #12302 branch. False alarm.