--compile=min does not output code coverage

[fredrikekre]

$ ls
test.jl

$ cat test.jl 
function f()
    println("hello, world")
end
f()

$ julia --code-coverage=user --compile=min test.jl
hello, world

$ ls
test.jl

$ julia --code-coverage=user test.jl                                 
hello, world

$ ls
test.jl  test.jl.11153.cov

[JeffBezanson]

We should just add an error for this combination of options.

[fredrikekre]

Okay, is the interpreter not able to output code coverage? Is that the reason that top-level code generally is not covered either?

[timholy]

We should just add an error for this combination of options.

Maybe a warning? A package that sets

Base.Experimental.@compiler_options compile=min optimize=1

in its source code, but still runs standard CI files, would then start throwing an error. Seems pretty breaking.