From 1267d7531cef50dae92d074ff632b254321982ad Mon Sep 17 00:00:00 2001
From: Kristoffer Carlsson <kristoffer.carlsson@chalmers.se>
Date: Fri, 26 May 2017 22:44:27 +0200
Subject: [PATCH] add test for foldr on one element range (#22085)

(cherry picked from commit 64cb7e087c795474a8beba3352affa78fae9a6cd)
---
 test/reduce.jl | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/test/reduce.jl b/test/reduce.jl
index 74a4c72eee030..cf89d564262f8 100644
--- a/test/reduce.jl
+++ b/test/reduce.jl
@@ -362,3 +362,6 @@ end
 test18695(r) = sum( t^2 for t in r )
 @test @inferred(test18695([1.0,2.0,3.0,4.0])) == 30.0
 @test_throws ArgumentError test18695(Any[])
+
+# issue #21107
+@test foldr(-,2:2) == 2