MethodError when using function defined via macro

[cjwyett]

Hi

Reproducible example:

macro makefn(name)
    name = Symbol(name)
    quote
        $(esc(name))() = print("hello")
    end
end

julia> @makefn f
f (generic function with 1 method)

julia> f()
hello

julia> @code_string f()
ERROR: MethodError: no method matching +(::Nothing, ::Int64)
Closest candidates are:
  +(::Any, ::Any, ::Any, ::Any...) at /usr/share/julia/base/operators.jl:655
  +(::T, ::T) where T<:Union{Int128, Int16, Int32, Int64, Int8, UInt128, UInt16, UInt32, UInt64, UInt8} at /usr/share/julia/base/int.jl:87
  +(::Base.TwicePrecision, ::Number) at /usr/share/julia/base/twiceprecision.jl:279
  ...
Stacktrace:
 [1] definition(#unused#::Type{String}, method::Method)
   @ CodeTracking ~/.julia/packages/CodeTracking/zfc7r/src/CodeTracking.jl:230
 [2] code_string(f::Function, t::Type)
   @ CodeTracking ~/.julia/packages/CodeTracking/zfc7r/src/CodeTracking.jl:299
 [3] top-level scope
   @ REPL[5]:1

[cjwyett]

"Fixed" by #92