Profile incorrectly records functions at line number 0

[atbug]

This issue was originally reported at JunoLab/Juno.jl#481 and was found to be an issue of the Profile package.

Running this file (saved as test.jl)

using LinearAlgebra, Profile

function bar(x)
    if x < 0.5
        return round(Int64, exp(x))
    else
        return exp(x)
    end
end

function foo(n)
    for i = 1:n
        for j = 1:10000
            bar(rand())
        end
    end
end

foo(3)

@profile foo(10000)

Profile.print(mincount=100)

gives

julia> include("test.jl")
599 .\client.jl:424; include(::String)
 599 .\Base.jl:31; include(::Module, ::String)
  599 .\loading.jl:1105; include_relative(::Module, ::String)
   599 .\boot.jl:328; include
    368 C:\Users\wangc\Temp\test.jl:0; foo(::Int64) # weird stuff here
     138 .\special\exp.jl:117; exp(::Float64)
    207 C:\Users\wangc\Temp\test.jl:14; foo(::Int64)
     158 ...b\v1.3\Random\src\Random.jl:256; rand
      141 ...lib\v1.3\Random\src\RNGs.jl:296; default_rng
       104 ...lib\v1.3\Random\src\RNGs.jl:298; default_rng(::Int64)
599 .\task.jl:333; (::REPL.var"#26#27"{REPL.REPLBackend})()
 599 ...\stdlib\v1.3\REPL\src\REPL.jl:118; macro expansion
  599 ...\stdlib\v1.3\REPL\src\REPL.jl:86; eval_user_input(::Any, ::REPL.REPLBackend)
   599 .\boot.jl:330; eval(::Module, ::Any)

The function foo is incorrectly reported at line 0 of test.jl.