Initial commit: Go 1.23 release state

test/fixedbugs/issue19012.go

@@ -0,0 +1,25 @@
+// errorcheck
+
+// Copyright 2017 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.
+
+// Issue 19012: if we have any unknown type at a call site,
+// we must ensure that we return to the user a suppressed
+// error message saying instead of including <T> in
+// the message.
+
+package main
+
+func f(x int, y uint) {
+	if true {
+		return "a" > 10 // ERROR "^too many arguments to return$|return with value in function with no return|no result values expected|mismatched types"
+	}
+	return "gopher" == true, 10 // ERROR "^too many arguments to return$|return with value in function with no return|no result values expected|mismatched types"
+}
+
+func main() {
+	f(2, 3 < "x", 10) // ERROR "too many arguments|invalid operation|incompatible type"
+
+	f(10, 10, "a") // ERROR "too many arguments"
+}