fix panic on decode of "t=0t d{}"

decoder_test.go

@@ -338,11 +338,8 @@ func TestDecode_interfaceInline(t *testing.T) {
 		Err   bool
 		Out   interface{}
 	}{
-		{
-			"t t e{{}}",
-			true,
-			nil,
-		},
+		{"t t e{{}}", true, nil},
+		{"t=0t d {}", true, map[string]interface{}{"t": 0}},
 	}
 
 	for _, tc := range cases {

hcl/ast/ast.go

@@ -133,6 +133,12 @@ type ObjectItem struct {
 }
 
 func (o *ObjectItem) Pos() token.Pos {
+	// I'm not entirely sure what causes this, but removing this causes
+	// a test failure. We should investigate at some point.
+	if len(o.Keys) == 0 {
+		return token.Pos{}
+	}
+
 	return o.Keys[0].Pos()
 }
 

hcl/parser/parser_test.go

@@ -8,6 +8,8 @@ import (
 	"runtime"
 	"testing"
 
+	"github.com/davecgh/go-spew/spew"
+
 	"github.com/hashicorp/hcl/hcl/ast"
 	"github.com/hashicorp/hcl/hcl/token"
 )
@@ -338,12 +340,15 @@ func TestParse_inline(t *testing.T) {
 		Err   bool
 	}{
 		{"t t e{{}}", true},
+		{"o{{}}", true},
+		{"t t e d N{{}}", true},
+		{"t t e d{{}}", true},
 	}
 
 	for _, tc := range cases {
-		_, err := Parse([]byte(tc.Value))
+		ast, err := Parse([]byte(tc.Value))
 		if (err != nil) != tc.Err {
-			t.Fatalf("Input: %q\n\nError: %s", tc.Value, err)
+			t.Fatalf("Input: %q\n\nError: %s\n\nAST: %s", tc.Value, err, spew.Sdump(ast))
 		}
 	}
 }