github.com/JimmyHuang454/JLS-go@v0.0.0-20230831150107-90d536585ba0/internal/types/testdata/fixedbugs/issue49043.go (about)

     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  // The example from the issue.
     8  type (
     9  	N[P any] M /* ERROR invalid recursive type */ [P]
    10  	M[P any] N[P]
    11  )
    12  
    13  // A slightly more complicated case.
    14  type (
    15  	A[P any] B /* ERROR invalid recursive type */ [P]
    16  	B[P any] C[P]
    17  	C[P any] A[P]
    18  )
    19  
    20  // Confusing but valid (note that `type T *T` is valid).
    21  type (
    22  	N1[P any] *M1[P]
    23  	M1[P any] *N1[P]
    24  )