1 // -lang=go1.20 2 3 // Copyright 2023 The Go Authors. All rights reserved. 4 // Use of this source code is governed by a BSD-style 5 // license that can be found in the LICENSE file. 6 7 package p 8 9 func g[P any](P) {} 10 func h[P, Q any](P) Q { panic(0) } 11 12 var _ func(int) = g /* ERROR "implicitly instantiated function in assignment requires go1.21 or later" */ 13 var _ func(int) string = h[ /* ERROR "partially instantiated function in assignment requires go1.21 or later" */ int] 14 15 func f1(func(int)) {} 16 func f2(int, func(int)) {} 17 18 func _() { 19 f1(g /* ERROR "implicitly instantiated function as argument requires go1.21 or later" */) 20 f2(0, g /* ERROR "implicitly instantiated function as argument requires go1.21 or later" */) 21 } 22