Initial commit: Go 1.23 release state

test/const5.go

@@ -0,0 +1,37 @@
+// errorcheck
+
+// Copyright 2011 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 len non-constants are not constants, https://golang.org/issue/3244.
+
+package p
+
+var b struct {
+	a[10]int
+}
+
+var m map[string][20]int
+
+var s [][30]int
+
+func f() *[40]int
+var c chan *[50]int
+var z complex128
+
+const (
+	n1 = len(b.a)
+	n2 = len(m[""])
+	n3 = len(s[10])
+
+	n4 = len(f())  // ERROR "is not a constant|is not constant"
+	n5 = len(<-c) // ERROR "is not a constant|is not constant"
+
+	n6 = cap(f())  // ERROR "is not a constant|is not constant"
+	n7 = cap(<-c) // ERROR "is not a constant|is not constant"
+	n8 = real(z) // ERROR "is not a constant|is not constant"
+	n9 = len([4]float64{real(z)}) // ERROR "is not a constant|is not constant"
+
+)
+