From 53be49b102f23c118439dd0fd41713d81dedc771 Mon Sep 17 00:00:00 2001
From: Mike Innes <mike.j.innes@gmail.com>
Date: Tue, 28 Aug 2018 11:02:38 +0100
Subject: [PATCH] fix #377

---
 src/tracker/array.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/tracker/array.jl b/src/tracker/array.jl
index 728eef29..ffa3a89e 100644
--- a/src/tracker/array.jl
+++ b/src/tracker/array.jl
@@ -384,7 +384,7 @@ end
 using Requires
 
 # https://github.com/FluxML/Flux.jl/issues/353
-@init @eval Base.Broadcast begin
+@init Requires.isprecompiling() || @eval Base.Broadcast begin
   function flatten(bc::Broadcasted{Style}) where {Style}
     isflat(bc) && return bc
     args = cat_nested(bc)