From 4cb1ea6ae1a8baad838d7665addc97a2f047538e Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Sat, 11 Oct 2014 17:20:39 -0700
Subject: [PATCH] config: allow exact multi-resource references outside slices

---
 config/config.go                                           | 2 +-
 config/config_test.go                                      | 7 +++++++
 .../validate-var-multi-exact-non-slice/main.tf             | 7 +++++++
 3 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100644 config/test-fixtures/validate-var-multi-exact-non-slice/main.tf

diff --git a/config/config.go b/config/config.go
index 2def8c842e..261c9c4ac1 100644
--- a/config/config.go
+++ b/config/config.go
@@ -455,7 +455,7 @@ func (c *Config) validateVarContextFn(
 			return
 		}
 
-		if rv.Multi && loc != reflectwalk.SliceElem {
+		if rv.Multi && rv.Index == -1 && loc != reflectwalk.SliceElem {
 			*errs = append(*errs, fmt.Errorf(
 				"%s: multi-variable must be in a slice", source))
 		}
diff --git a/config/config_test.go b/config/config_test.go
index b3721493dc..1574ba83ac 100644
--- a/config/config_test.go
+++ b/config/config_test.go
@@ -221,6 +221,13 @@ func TestConfigValidate_varDefaultInterpolate(t *testing.T) {
 	}
 }
 
+func TestConfigValidate_varMultiExactNonSlice(t *testing.T) {
+	c := testConfig(t, "validate-var-multi-exact-non-slice")
+	if err := c.Validate(); err != nil {
+		t.Fatalf("should be valid: %s", err)
+	}
+}
+
 func TestConfigValidate_varMultiNonSlice(t *testing.T) {
 	c := testConfig(t, "validate-var-multi-non-slice")
 	if err := c.Validate(); err == nil {
diff --git a/config/test-fixtures/validate-var-multi-exact-non-slice/main.tf b/config/test-fixtures/validate-var-multi-exact-non-slice/main.tf
new file mode 100644
index 0000000000..e79311382b
--- /dev/null
+++ b/config/test-fixtures/validate-var-multi-exact-non-slice/main.tf
@@ -0,0 +1,7 @@
+resource "aws_instance" "foo" {
+    count = 3
+}
+
+resource "aws_instance" "bar" {
+    foo = "${aws_instance.foo.0.id}"
+}