diff --git a/test/fixedbugs/issue35739.dir/a.go b/test/fixedbugs/issue35739.dir/a.go
new file mode 100644
index 0000000000..b79503e996
--- /dev/null
+++ b/test/fixedbugs/issue35739.dir/a.go
@@ -0,0 +1,15 @@
+// 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 a
+
+type myError string
+
+func (e myError) Error() string { return string(e) }
+
+const myErrorVal myError = "error"
+
+func IsMyError(err error) bool {
+	return err == error(myErrorVal)
+}
diff --git a/test/fixedbugs/issue35739.dir/b.go b/test/fixedbugs/issue35739.dir/b.go
new file mode 100644
index 0000000000..8d22aac8d6
--- /dev/null
+++ b/test/fixedbugs/issue35739.dir/b.go
@@ -0,0 +1,11 @@
+// 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 b
+
+import "./a"
+
+func F(err error) bool {
+	return a.IsMyError(err)
+}
diff --git a/test/fixedbugs/issue35739.go b/test/fixedbugs/issue35739.go
new file mode 100644
index 0000000000..26f09d8c1b
--- /dev/null
+++ b/test/fixedbugs/issue35739.go
@@ -0,0 +1,9 @@
+// compiledir
+
+// 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.
+
+// Issue 35739: gccgo inlining error with constant with method.
+
+package ignored