From 418507c643504a1e2fb45f0b528b73185c0fb0a4 Mon Sep 17 00:00:00 2001
From: Jeff Bezanson <jeff.bezanson@gmail.com>
Date: Mon, 10 Aug 2015 12:38:58 -0400
Subject: [PATCH] allow Rational inner ctor to accept any Integers. fixes
 #12536

---
 base/rational.jl | 2 +-
 test/numbers.jl  | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/base/rational.jl b/base/rational.jl
index dc32a6cdb5eb3..f52906b6d84f8 100644
--- a/base/rational.jl
+++ b/base/rational.jl
@@ -4,7 +4,7 @@ immutable Rational{T<:Integer} <: Real
     num::T
     den::T
 
-    function Rational(num::T, den::T)
+    function Rational(num::Integer, den::Integer)
         num == den == zero(T) && throw(ArgumentError("invalid rational: zero($T)//zero($T)"))
         g = den < 0 ? -gcd(den, num) : gcd(den, num)
         new(div(num, g), div(den, g))
diff --git a/test/numbers.jl b/test/numbers.jl
index 6f5802f57429e..15c5ea77dbb33 100644
--- a/test/numbers.jl
+++ b/test/numbers.jl
@@ -2518,3 +2518,7 @@ for (d,B) in ((4//2+1im,Rational{BigInt}),(3.0+1im,BigFloat),(2+1im,BigInt))
 end
 
 @test 0x2^9 === 0x2^big(9) === 0x0
+
+# issue #12536
+@test Rational{Int16}(1,2) === Rational(Int16(1),Int16(2))
+@test Rational{Int16}(500000,1000000) === Rational(Int16(1),Int16(2))