1 // errorcheck 2 3 // Copyright 2011 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 // Verify that illegal composite literals are detected. 8 // Does not compile. 9 10 package main 11 12 var m map[int][3]int 13 14 func f() [3]int 15 16 func fp() *[3]int 17 18 var mp map[int]*[3]int 19 20 var ( 21 _ = [3]int{1, 2, 3}[:] // ERROR "slice of unaddressable value" 22 _ = m[0][:] // ERROR "slice of unaddressable value" 23 _ = f()[:] // ERROR "slice of unaddressable value" 24 25 _ = 301[:] // ERROR "cannot slice" 26 _ = 3.1[:] // ERROR "cannot slice" 27 _ = true[:] // ERROR "cannot slice" 28 29 // these are okay because they are slicing a pointer to an array 30 _ = (&[3]int{1, 2, 3})[:] 31 _ = mp[0][:] 32 _ = fp()[:] 33 ) 34 35 type T struct { 36 i int 37 f float64 38 s string 39 next *T 40 } 41 42 type TP *T 43 type Ti int 44 45 var ( 46 _ = &T{0, 0, "", nil} // ok 47 _ = &T{i: 0, f: 0, s: "", next: {}} // ERROR "missing type in composite literal|omit types within composite literal" 48 _ = &T{0, 0, "", {}} // ERROR "missing type in composite literal|omit types within composite literal" 49 _ = TP{i: 0, f: 0, s: "", next: {}} // ERROR "invalid pointer type" 50 _ = &Ti{} // ERROR "invalid pointer type" 51 ) 52 53 type M map[T]T 54 55 var ( 56 _ = M{{i:1}: {i:2}} 57 _ = M{T{i:1}: {i:2}} 58 _ = M{{i:1}: T{i:2}} 59 _ = M{T{i:1}: T{i:2}} 60 ) 61 62 type S struct { s [1]*M1 } 63 type M1 map[S]int 64 var _ = M1{{s:[1]*M1{&M1{{}:1}}}:2} 65 66
