go source for verification 2026-05-22

test/newexpr.go

@@ -0,0 +1,46 @@
+// run
+
+// Copyright 2025 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
+
+// Issue #45624 is the proposal to accept new(expr) in go1.26.
+// Here we test its run-time behavior.
+func main() {
+	{
+		p := new(123) // untyped constant expr
+		if *p != 123 {
+			panic("wrong value")
+		}
+	}
+	{
+		x := 42
+		p := new(x) // non-constant expr
+		if *p != x {
+			panic("wrong value")
+		}
+	}
+	{
+		x := [2]int{123, 456}
+		p := new(x) // composite value
+		if *p != x {
+			panic("wrong value")
+		}
+	}
+	{
+		var i int
+		v := new(i > 0) // untyped expression, see issue #75617
+		if *v != false {
+			panic("wrong value")
+		}
+	}
+}
+
+// Regression test for ICE in staticdata.GlobalLinksym from
+// use of autotemp outside a function (go.dev/issue/77237).
+var (
+	x = new(0)
+	y = x
+)