go source for verification 2026-05-22

test/fixedbugs/issue8745.go

@@ -0,0 +1,13 @@
+// errorcheck
+
+// Copyright 2015 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.
+
+// Check that the error says s[2] is a byte, not a uint8.
+
+package p
+
+func f(s string) {
+	var _ float64 = s[2] // ERROR "cannot use.*type byte.*as type float64|cannot use .* as float64 value"
+}