go source for verification 2026-05-22

test/chan/select4.go

@@ -0,0 +1,31 @@
+// run
+
+// Copyright 2010 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
+
+// Test that a select statement proceeds when a value is ready.
+
+package main
+
+func f() *int {
+	println("BUG: called f")
+	return new(int)
+}
+
+func main() {
+	var x struct {
+		a int
+	}
+	c := make(chan int, 1)
+	c1 := make(chan int)
+	c <- 42
+	select {
+	case *f() = <-c1:
+		// nothing
+	case x.a = <-c:
+		if x.a != 42 {
+			println("BUG:", x.a)
+		}
+	}
+}