1 files changed, 12 insertions, 0 deletions
diff --git a/test/fixedbugs/issue23587.go b/test/fixedbugs/issue23587.go
new file mode 100644
index 0000000..bd5df27
--- /dev/null
+++ b/test/fixedbugs/issue23587.go
@@ -0,0 +1,12 @@
+// errorcheck
+
+// Copyright 2018 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
+
+func f(x int) {
+	_ = ~x    // ERROR "invalid character"
+	_ = x ~ x // ERROR "invalid character" "unexpected x at end of statement"
+}