From d4be04a0d684e4825b6d3c684c7a264607bb64ad Mon Sep 17 00:00:00 2001
From: Masaaki Goshima <goccy54@gmail.com>
Date: Mon, 9 Dec 2024 23:48:24 +0900
Subject: [PATCH] fix scalar-value-with-two-anchors

---
 parser/parser.go        | 9 +++++++++
 yaml_test_suite_test.go | 1 -
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/parser/parser.go b/parser/parser.go
index 959e366..08f9dfe 100644
--- a/parser/parser.go
+++ b/parser/parser.go
@@ -211,6 +211,9 @@ func (p *parser) parseToken(ctx *context, tk *Token) (ast.Node, error) {
 		if err != nil {
 			return nil, err
 		}
+		if _, ok := value.(*ast.AnchorNode); ok {
+			return nil, errors.ErrSyntax("anchors cannot be used consecutively", value.GetToken())
+		}
 		anchor.Value = value
 		return anchor, nil
 	case TokenGroupAlias:
@@ -283,6 +286,9 @@ func (p *parser) parseScalarValue(ctx *context, tk *Token) (ast.ScalarNode, erro
 			if err != nil {
 				return nil, err
 			}
+			if _, ok := value.(*ast.AnchorNode); ok {
+				return nil, errors.ErrSyntax("anchors cannot be used consecutively", value.GetToken())
+			}
 			anchor.Value = value
 			return anchor, nil
 		case TokenGroupAlias:
@@ -797,6 +803,9 @@ func (p *parser) parseAnchor(ctx *context, g *TokenGroup) (*ast.AnchorNode, erro
 	if err != nil {
 		return nil, err
 	}
+	if _, ok := value.(*ast.AnchorNode); ok {
+		return nil, errors.ErrSyntax("anchors cannot be used consecutively", value.GetToken())
+	}
 	anchor.Value = value
 	return anchor, nil
 }
diff --git a/yaml_test_suite_test.go b/yaml_test_suite_test.go
index 73cb459..fbd1525 100644
--- a/yaml_test_suite_test.go
+++ b/yaml_test_suite_test.go
@@ -53,7 +53,6 @@ var failureTestNames = []string{
 	"plain-dashes-in-flow-sequence",
 	"question-mark-edge-cases/00",                           // no json.
 	"question-mark-edge-cases/01",                           // no json.
-	"scalar-value-with-two-anchors",                         // pass yamlv3.
 	"single-character-streams/01",                           // no json.
 	"single-pair-implicit-entries",                          // no json.
 	"spec-example-2-11-mapping-between-sequences",           // no json.