From db319ae35e287cabeb1112bb392f1c4513f89ef6 Mon Sep 17 00:00:00 2001
From: Martin Atkins <mart@degeneration.co.uk>
Date: Wed, 2 May 2018 20:14:18 -0700
Subject: [PATCH] core: NewLegacyResourceInstanceAddress correct handling of
 addrs.NoKey

Previously we were setting zero here, but the correct way to represent
"no index" in a *ResourceAddress is to set the index to -1.
---
 terraform/resource_address.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/terraform/resource_address.go b/terraform/resource_address.go
index f7b3519789..156ecf5c0e 100644
--- a/terraform/resource_address.go
+++ b/terraform/resource_address.go
@@ -362,7 +362,7 @@ func NewLegacyResourceInstanceAddress(addr addrs.AbsResourceInstance) *ResourceA
 	ret.Path = path
 
 	if addr.Resource.Key == addrs.NoKey {
-		ret.Index = 0
+		ret.Index = -1
 	} else if ik, ok := addr.Resource.Key.(addrs.IntKey); ok {
 		ret.Index = int(ik)
 	} else {