issue39723.go2

     1  // Copyright 2020 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  // A constraint must be an interface; it cannot
     8  // be a type parameter, for instance.
     9  func _[A interface{ ~int }, B A /* ERROR cannot use a type parameter as constraint */ ]() {}
    10

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