1 // Copyright 2021 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package p 6 7 type T[P any] struct{} 8 9 func (T[P]) m1() 10 11 type A1 = T // ERROR "cannot use generic type" 12 13 func (A1[P]) m2() {} 14 15 type A2 = T[int] 16 17 func (A2 /* ERRORx `cannot define new methods on instantiated type (T\[int\]|A2)` */) m3() {} 18 func (_ /* ERRORx `cannot define new methods on instantiated type (T\[int\]|A2)` */ A2) m4() {} 19 20 func (T[int]) m5() {} // int is the type parameter name, not an instantiation 21 func (T[* /* ERROR "must be an identifier" */ int]) m6() {} // syntax error 22