go source for verification 2026-05-22

test/typecheckloop.go

@@ -0,0 +1,14 @@
+// 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.
+
+// Verify that constant definition loops are caught during
+// typechecking and that the errors print correctly.
+
+package main
+
+const A = 1 + B // ERROR "constant definition loop\n.*A uses B\n.*B uses C\n.*C uses A|initialization cycle"
+const B = C - 1 // ERROR "constant definition loop\n.*B uses C\n.*C uses B|initialization cycle"
+const C = A + B + 1