1 files changed, 31 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/syntax/testdata/issue49482.go b/src/cmd/compile/internal/syntax/testdata/issue49482.go
new file mode 100644
index 0000000..1fc303d
--- /dev/null
+++ b/src/cmd/compile/internal/syntax/testdata/issue49482.go
@@ -0,0 +1,31 @@
+// Copyright 2021 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.
+
+package p
+
+type (
+        // these need a comma to disambiguate
+        _[P *T,] struct{}
+        _[P *T, _ any] struct{}
+        _[P (*T),] struct{}
+        _[P (*T), _ any] struct{}
+        _[P (T),] struct{}
+        _[P (T), _ any] struct{}
+
+        // these parse as name followed by type
+        _[P *struct{}] struct{}
+        _[P (*struct{})] struct{}
+        _[P ([]int)] struct{}
+
+        // array declarations
+        _ [P(T)]struct{}
+        _ [P((T))]struct{}
+        _ [P * *T] struct{} // this could be a name followed by a type but it makes the rules more complicated
+        _ [P * T]struct{}
+        _ [P(*T)]struct{}
+        _ [P(**T)]struct{}
+        _ [P * T - T]struct{}
+        _ [P*T-T /* ERROR unexpected comma */ ,]struct{}
+        _ [10 /* ERROR unexpected comma */ ,]struct{}
+)