go source for verification 2026-05-22

test/fixedbugs/issue48473.go

@@ -0,0 +1,30 @@
+// run
+
+// Copyright 2021 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 main
+
+import "fmt"
+
+func f(x uint64) uint64 {
+	s := "\x04"
+	c := s[0]
+	return x - x<<c<<4
+}
+
+func g(x uint32) uint32 {
+	s := "\x04"
+	c := s[0]
+	return x - x<<c<<4
+}
+
+func main() {
+	if want, got := uint64(0xffffffffffffff01), f(1); want != got {
+		panic(fmt.Sprintf("want %x got %x", want, got))
+	}
+	if want, got := uint32(0xffffff01), g(1); want != got {
+		panic(fmt.Sprintf("want %x got %x", want, got))
+	}
+}