diff --git a/src/cmd/compile/internal/ir/fmt.go b/src/cmd/compile/internal/ir/fmt.go
index 6209702291..92ea160a28 100644
--- a/src/cmd/compile/internal/ir/fmt.go
+++ b/src/cmd/compile/internal/ir/fmt.go
@@ -216,6 +216,7 @@ var OpPrec = []int{
 	OTINTER:        8,
 	OTMAP:          8,
 	OTSTRUCT:       8,
+	OTYPE:          8,
 	OINDEXMAP:      8,
 	OINDEX:         8,
 	OSLICE:         8,
@@ -232,6 +233,7 @@ var OpPrec = []int{
 	ODOT:           8,
 	OXDOT:          8,
 	OCALLPART:      8,
+	OMETHEXPR:      8,
 	OPLUS:          7,
 	ONOT:           7,
 	OBITNOT:        7,
@@ -551,8 +553,8 @@ func exprFmt(n Node, s fmt.State, prec int) {
 	}
 
 	nprec := OpPrec[n.Op()]
-	if n.Op() == OTYPE && n.Sym() != nil {
-		nprec = 8
+	if n.Op() == OTYPE && n.Type().IsPtr() {
+		nprec = OpPrec[ODEREF]
 	}
 
 	if prec > nprec {
diff --git a/test/fixedbugs/issue15055.go b/test/fixedbugs/issue15055.go
index e58047e411..33cf63aaad 100644
--- a/test/fixedbugs/issue15055.go
+++ b/test/fixedbugs/issue15055.go
@@ -8,10 +8,12 @@ package main
 
 func main() {
 	type name string
-	_ = []byte("abc", "def", 12)    // ERROR "too many arguments to conversion to \[\]byte: \(\[\]byte\)\(.abc., .def., 12\)"
+	_ = []byte("abc", "def", 12)    // ERROR "too many arguments to conversion to \[\]byte: \[\]byte\(.abc., .def., 12\)"
 	_ = string("a", "b", nil)       // ERROR "too many arguments to conversion to string: string\(.a., .b., nil\)"
-	_ = []byte()                    // ERROR "missing argument to conversion to \[\]byte: \(\[\]byte\)\(\)"
+	_ = []byte()                    // ERROR "missing argument to conversion to \[\]byte: \[\]byte\(\)"
 	_ = string()                    // ERROR "missing argument to conversion to string: string\(\)"
+	_ = *int()                      // ERROR "missing argument to conversion to int: int\(\)"
+	_ = (*int)()                    // ERROR "missing argument to conversion to \*int: \(\*int\)\(\)"
 	_ = name("a", 1, 3.3)           // ERROR "too many arguments to conversion to name: name\(.a., 1, 3.3\)"
-	_ = map[string]string(nil, nil) // ERROR "too many arguments to conversion to map\[string\]string: \(map\[string\]string\)\(nil, nil\)"
+	_ = map[string]string(nil, nil) // ERROR "too many arguments to conversion to map\[string\]string: map\[string\]string\(nil, nil\)"
 }
diff --git a/test/fixedbugs/issue43428.go b/test/fixedbugs/issue43428.go
new file mode 100644
index 0000000000..773a3f3516
--- /dev/null
+++ b/test/fixedbugs/issue43428.go
@@ -0,0 +1,25 @@
+// errorcheck
+
+// Copyright 2020 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
+
+import "time"
+
+type T int
+
+func (T) Mv()  {}
+func (*T) Mp() {}
+
+var _ = []int{
+	T.Mv,    // ERROR "cannot use T\.Mv|incompatible type"
+	(*T).Mv, // ERROR "cannot use \(\*T\)\.Mv|incompatible type"
+	(*T).Mp, // ERROR "cannot use \(\*T\)\.Mp|incompatible type"
+
+	time.Time.GobEncode,    // ERROR "cannot use time\.Time\.GobEncode|incompatible type"
+	(*time.Time).GobEncode, // ERROR "cannot use \(\*time\.Time\)\.GobEncode|incompatible type"
+	(*time.Time).GobDecode, // ERROR "cannot use \(\*time\.Time\)\.GobDecode|incompatible type"
+
+}