diff --git a/test/fixedbugs/issue33062.go b/test/fixedbugs/issue33062.go
new file mode 100644
index 0000000..5e6a358
--- /dev/null
+++ b/test/fixedbugs/issue33062.go
@@ -0,0 +1,33 @@
+// run
+
+// Copyright 2019 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.
+
+// Issue 33062: gccgo generates incorrect type equality
+// functions.
+
+package main
+
+type simpleStruct struct {
+	int
+	string
+}
+
+type complexStruct struct {
+	int
+	simpleStruct
+}
+
+func main() {
+	x := complexStruct{1, simpleStruct{2, "xxx"}}
+	ix := interface{}(x)
+	y := complexStruct{1, simpleStruct{2, "yyy"}}
+	iy := interface{}(y)
+	if ix != ix {
+		panic("FAIL")
+	}
+	if ix == iy {
+		panic("FAIL")
+	}
+}