1 files changed, 31 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/syntax/testdata/issue23434.go b/src/cmd/compile/internal/syntax/testdata/issue23434.go
new file mode 100644
index 0000000..e436abf
--- /dev/null
+++ b/src/cmd/compile/internal/syntax/testdata/issue23434.go
@@ -0,0 +1,31 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Test case for go.dev/issue/23434: Better synchronization of
+// parser after missing type. There should be exactly
+// one error each time, with now follow errors.
+
+package p
+
+type T /* ERROR unexpected newline */
+
+type Map map[int] /* ERROR unexpected newline */
+
+// Examples from go.dev/issue/23434:
+
+func g() {
+	m := make(map[string] /* ERROR unexpected ! */ !)
+	for {
+		x := 1
+		print(x)
+	}
+}
+
+func f() {
+	m := make(map[string] /* ERROR unexpected \) */ )
+	for {
+		x := 1
+		print(x)
+	}
+}