modernc.org/gc@v1.0.1-0.20240304020402-f0dba7c97c2b/testdata/errchk/test/fixedbugs/issue4620.go (about)

     1  // run
     2  
     3  // Copyright 2013 The Go Authors. All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  
     7  // Issue 4620: map indexes are not evaluated before assignment of other elements
     8  
     9  package main
    10  
    11  import "fmt"
    12  
    13  func main() {
    14  	m := map[int]int{0:1}
    15  	i := 0
    16  	i, m[i] = 1, 2
    17  	if m[0] != 2 {
    18  		fmt.Println(m)
    19  		panic("m[i] != 2")
    20  	}
    21  }