isfinite error

[taylormcd]

This line of code
isfinite(SimpleRatio(1,1))
yields the following

ERROR: MethodError: no method matching decompose(::SimpleRatio{Int64})
Closest candidates are:
  decompose(::BigFloat) at hashing2.jl:133
  decompose(::Float64) at hashing2.jl:122
  decompose(::Float32) at hashing2.jl:111
  ...
Stacktrace:
 [1] isfinite(::SimpleRatio{Int64}) at ./float.jl:546
 [2] top-level scope at none:0

I ran into this while using Interpolations and ForwardDiff with NaN checking enabled. I'm assuming that this just hasn't been implemented yet for the SimpleRatio type.