github.com/mattn/go@v0.0.0-20171011075504-07f7db3ea99f/test/fixedbugs/issue9521.go (about)

     1  // errorcheck
     2  
     3  // Copyright 2015 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  // Test that an incorrect use of the blank identifer is caught.
     8  // Does not compile.
     9  
    10  package main
    11  
    12  func f() (_, _ []int)         { return }
    13  func g() (x []int, y float64) { return }
    14  
    15  func main() {
    16  	_ = append(f()) // ERROR "cannot append \[\]int value to \[\]int"
    17  	_ = append(g()) // ERROR "cannot append float64 value to \[\]int"
    18  }