--- /dev/null
+// 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 typesinternal
+
+import (
+ "go/types"
+ "reflect"
+ "unsafe"
+)
+
+func SetUsesCgo(conf *types.Config) bool {
+ v := reflect.ValueOf(conf).Elem()
+
+ f := v.FieldByName("go115UsesCgo")
+ if !f.IsValid() {
+ f = v.FieldByName("UsesCgo")
+ if !f.IsValid() {
+ return false
+ }
+ }
+
+ addr := unsafe.Pointer(f.UnsafeAddr())
+ *(*bool)(addr) = true
+
+ return true
+}