Initial commit: Go 1.23 release state

test/blank1.go

@@ -0,0 +1,32 @@
+// errorcheck
+
+// Copyright 2009 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 incorrect uses of the blank identifier are caught.
+// Does not compile.
+
+package _	// ERROR "invalid package name"
+
+var t struct {
+	_ int
+}
+
+func (x int) _() { // ERROR "methods on non-local type"
+	println(x)
+}
+
+type T struct {
+      _ []int
+}
+
+func main() {
+	_()	// ERROR "cannot use .* as value"
+	x := _+1	// ERROR "cannot use .* as value"
+	_ = x
+	_ = t._ // ERROR "cannot refer to blank field|invalid use of|t._ undefined"
+
+      var v1, v2 T
+      _ = v1 == v2 // ERROR "cannot be compared|non-comparable|cannot compare v1 == v2"
+}