From 27420a3fb37d1d51c796043794f1ea70c1a7bc98 Mon Sep 17 00:00:00 2001
From: jz <jz@rubiconproject.com>
Date: Tue, 9 Aug 2016 15:15:11 -0700
Subject: [PATCH] Change decoder to write to pointer memory if not null

---
 gen/decoder.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gen/decoder.go b/gen/decoder.go
index 94c1a9a..dd1187f 100644
--- a/gen/decoder.go
+++ b/gen/decoder.go
@@ -118,7 +118,9 @@ func (g *Generator) genTypeDecoderNoCheck(t reflect.Type, out string, tags field
 		fmt.Fprintln(g.out, ws+"  in.Skip()")
 		fmt.Fprintln(g.out, ws+"  "+out+" = nil")
 		fmt.Fprintln(g.out, ws+"} else {")
-		fmt.Fprintln(g.out, ws+"  "+out+" = new("+g.getType(t.Elem())+")")
+		fmt.Fprintln(g.out, ws+"  if ("+out+") == nil {")
+		fmt.Fprintln(g.out, ws+"    "+out+" = new("+g.getType(t.Elem())+")")
+		fmt.Fprintln(g.out, ws+"  }")
 
 		g.genTypeDecoder(t.Elem(), "*"+out, tags, indent+1)