From 754bee3869b6f64e963201b971fe5d3e82eea60a Mon Sep 17 00:00:00 2001
From: Jeff Bezanson <jeff.bezanson@gmail.com>
Date: Wed, 30 May 2012 16:49:11 -0400
Subject: [PATCH] fix conversion of Rational to Rational

---
 base/rational.jl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/base/rational.jl b/base/rational.jl
index 495492398915a..99f547a9cbbc6 100644
--- a/base/rational.jl
+++ b/base/rational.jl
@@ -55,6 +55,7 @@ function convert{T<:Integer}(::Type{Rational{T}}, x::Float, tol::Real)
 end
 convert{T<:Integer}(rt::Type{Rational{T}}, x::Float) = convert(rt,x,0)
 convert(::Type{Bool}, x::Rational) = (x!=0)  # to resolve ambiguity
+convert{T<:Rational}(::Type{T}, x::Rational) = x
 convert{T<:Real}(::Type{T}, x::Rational) = convert(T, x.num/x.den)
 
 promote_rule{T<:Integer}(::Type{Rational{T}}, ::Type{T}) = Rational{T}