Source file src/cmd/compile/internal/syntax/testdata/issue47704.go

     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  func _() {
     8  	_ = m[] // ERROR expected operand
     9  	_ = m[x,]
    10  	_ = m[x /* ERROR unexpected a */ a b c d]
    11  }
    12  
    13  // test case from the issue
    14  func f(m map[int]int) int {
    15  	return m[0 // ERROR expected comma, \: or \]
    16  		]
    17  }
    18  

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