github.com/JimmyHuang454/JLS-go@v0.0.0-20230831150107-90d536585ba0/internal/types/testdata/fixedbugs/issue52915.go (about)

     1  // Copyright 2022 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  import "unsafe"
     8  
     9  type T[P any] struct {
    10  	T /* ERROR   invalid recursive type */ [P]
    11  }
    12  
    13  func _[P any]() {
    14  	_ = unsafe.Sizeof(T[int]{})
    15  	_ = unsafe.Sizeof(struct{ T[int] }{})
    16  
    17  	_ = unsafe.Sizeof(T[P]{})
    18  	_ = unsafe.Sizeof(struct{ T[P] }{})
    19  }
    20  
    21  // TODO(gri) This is a follow-on error due to T[int] being invalid.
    22  //           We should try to avoid it.
    23  const _ = unsafe /* ERROR not constant */ .Sizeof(T[int]{})