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.
7 // Test illegal shifts.
8 // Issue 1708, illegal cases.
13 func f(x int) int { return 0 }
14 func g(x interface{}) int { return 0 }
15 func h(x float64) int { return 0 }
20 u = 1.0 << s // ERROR "invalid operation|shift of non-integer operand"
21 v float32 = 1 << s // ERROR "invalid"
24 // non-constant shift expressions
26 e1 = g(2.0 << s) // ERROR "invalid|shift of non-integer operand"
27 f1 = h(2 << s) // ERROR "invalid"
28 g1 int64 = 1.1 << s // ERROR "truncated|must be integer"
31 // constant shift expressions
35 a2 int = 1.0 << c // ERROR "overflow"
36 b2 = 1.0 << c // ERROR "overflow"
37 d2 = f(1.0 << c) // ERROR "overflow"
42 a3 = 1.0<<s + 0 // ERROR "invalid|shift of non-integer operand"
44 b3 = 1<<s + 1 + 1.0 // ERROR "invalid|shift of non-integer operand"
46 c3 = complex(1<<s, 0) // ERROR "invalid|shift of type float64"
47 d3 int = complex(1<<s, 3) // ERROR "non-integer|cannot use.*as type int" "shift of type float64|must be integer"
48 e3 = real(1 << s) // ERROR "invalid"
49 f3 = imag(1 << s) // ERROR "invalid"
56 i = 1 << s // 1 has type int
57 j int32 = 1 << s // 1 has type int32; j == 0
58 k = uint64(1 << s) // 1 has type uint64; k == 1<<33
59 m int = 1.0 << s // 1.0 has type int
60 n = 1.0<<s != i // 1.0 has type int; n == false if ints are 32bits in size
61 o = 1<<s == 2<<s // 1 and 2 have type int; o == true if ints are 32bits in size
62 // next test only fails on 32bit systems
63 // p = 1<<s == 1<<33 // illegal if ints are 32bits in size: 1 has type int, but 1<<33 overflows int
64 u = 1.0 << s // ERROR "non-integer|float64"
65 u1 = 1.0<<s != 0 // ERROR "non-integer|float64"
66 u2 = 1<<s != 1.0 // ERROR "non-integer|float64"
67 v float32 = 1 << s // ERROR "non-integer|float32"
68 w int64 = 1.0 << 33 // 1.0<<33 is a constant shift expression
70 _, _, _, _, _, _, _, _, _, _ = j, k, m, n, o, u, u1, u2, v, w
73 // non constants arguments trigger a different path
76 _ = f2 << 2 // ERROR "shift of type float64|non-integer|must be integer"
77 _ = s2 << 2 // ERROR "shift of type string|non-integer|must be integer"
80 // shifts in comparisons w/ untyped operands
83 _ = 1<<s == 1. // ERROR "invalid|shift of type float64"
84 _ = 1.<<s == 1 // ERROR "invalid|shift of type float64"
85 _ = 1.<<s == 1. // ERROR "invalid|non-integer|shift of type float64"
88 _ = 1<<s+1 == 1. // ERROR "invalid|shift of type float64"
89 _ = 1<<s+1. == 1 // ERROR "invalid|shift of type float64"
90 _ = 1<<s+1. == 1. // ERROR "invalid|shift of type float64"
91 _ = 1.<<s+1 == 1 // ERROR "invalid|shift of type float64"
92 _ = 1.<<s+1 == 1. // ERROR "invalid|shift of type float64"
93 _ = 1.<<s+1. == 1 // ERROR "invalid|shift of type float64"
94 _ = 1.<<s+1. == 1. // ERROR "invalid|non-integer|shift of type float64"
97 _ = 1<<s == 1.<<s // ERROR "invalid|shift of type float64"
98 _ = 1.<<s == 1<<s // ERROR "invalid|shift of type float64"
99 _ = 1.<<s == 1.<<s // ERROR "invalid|non-integer|shift of type float64"
102 _ = 1<<s+1<<s == 1. // ERROR "invalid|shift of type float64"
103 _ = 1<<s+1.<<s == 1 // ERROR "invalid|shift of type float64"
104 _ = 1<<s+1.<<s == 1. // ERROR "invalid|shift of type float64"
105 _ = 1.<<s+1<<s == 1 // ERROR "invalid|shift of type float64"
106 _ = 1.<<s+1<<s == 1. // ERROR "invalid|shift of type float64"
107 _ = 1.<<s+1.<<s == 1 // ERROR "invalid|shift of type float64"
108 _ = 1.<<s+1.<<s == 1. // ERROR "invalid|non-integer|shift of type float64"
110 _ = 1<<s+1<<s == 1<<s+1<<s
111 _ = 1<<s+1<<s == 1<<s+1.<<s // ERROR "invalid|shift of type float64"
112 _ = 1<<s+1<<s == 1.<<s+1<<s // ERROR "invalid|shift of type float64"
113 _ = 1<<s+1<<s == 1.<<s+1.<<s // ERROR "invalid|shift of type float64"
114 _ = 1<<s+1.<<s == 1<<s+1<<s // ERROR "invalid|shift of type float64"
115 _ = 1<<s+1.<<s == 1<<s+1.<<s // ERROR "invalid|shift of type float64"
116 _ = 1<<s+1.<<s == 1.<<s+1<<s // ERROR "invalid|shift of type float64"
117 _ = 1<<s+1.<<s == 1.<<s+1.<<s // ERROR "invalid|non-integer|shift of type float64"
118 _ = 1.<<s+1<<s == 1<<s+1<<s // ERROR "invalid|shift of type float64"
119 _ = 1.<<s+1<<s == 1<<s+1.<<s // ERROR "invalid|shift of type float64"
120 _ = 1.<<s+1<<s == 1.<<s+1<<s // ERROR "invalid|shift of type float64"
121 _ = 1.<<s+1<<s == 1.<<s+1.<<s // ERROR "invalid|non-integer|shift of type float64"
122 _ = 1.<<s+1.<<s == 1<<s+1<<s // ERROR "invalid|shift of type float64"
123 _ = 1.<<s+1.<<s == 1<<s+1.<<s // ERROR "invalid|non-integer|shift of type float64"
124 _ = 1.<<s+1.<<s == 1.<<s+1<<s // ERROR "invalid|non-integer|shift of type float64"
125 _ = 1.<<s+1.<<s == 1.<<s+1.<<s // ERROR "invalid|non-integer|shift of type float64"
128 // shifts in comparisons w/ typed operands
133 _ = 1.1<<s == x // ERROR "truncated|must be integer"
137 _ = 1<<s+x == 1.1 // ERROR "truncated"
140 _ = 1.<<s+x == 1.1 // ERROR "truncated"
141 _ = 1.1<<s+x == 1 // ERROR "truncated|must be integer"
142 _ = 1.1<<s+x == 1. // ERROR "truncated|must be integer"
143 _ = 1.1<<s+x == 1.1 // ERROR "truncated|must be integer"
147 _ = 1.1<<s == x<<s // ERROR "truncated|must be integer"
150 // shifts as operands in non-arithmetic operations and as arguments
157 _ = a[1.1<<s] // ERROR "integer|shift of type float64"
161 _ = make([]int, 1.<<s)
162 _ = make([]int, 1.1<<s) // ERROR "non-integer|truncated|must be integer"
165 _ = float32(1 << s) // ERROR "non-integer|shift of type float32|must be integer"
167 _ = float32(1. << s) // ERROR "non-integer|shift of type float32|must be integer"
168 _ = float32(1.1 << s) // ERROR "non-integer|shift of type float32|must be integer"
172 _ = append(a, 1.1<<s) // ERROR "truncated|must be integer"
175 _ = append(b, 1<<s) // ERROR "non-integer|type float32"
176 _ = append(b, 1.<<s) // ERROR "non-integer|type float32"
177 _ = append(b, 1.1<<s) // ERROR "non-integer|type float32|must be integer"
179 _ = complex(1.<<s, 0) // ERROR "non-integer|shift of type float64|must be integer"
180 _ = complex(1.1<<s, 0) // ERROR "non-integer|shift of type float64|must be integer"
181 _ = complex(0, 1.<<s) // ERROR "non-integer|shift of type float64|must be integer"
182 _ = complex(0, 1.1<<s) // ERROR "non-integer|shift of type float64|must be integer"
186 _ = complex(1<<s, a4) // ERROR "non-integer|shift of type float64|must be integer"
187 _ = complex(1<<s, b4) // ERROR "invalid|non-integer|"
189 var m1 map[int]string
192 delete(m1, 1.1<<s) // ERROR "truncated|shift of type float64|must be integer"
194 var m2 map[float32]string
195 delete(m2, 1<<s) // ERROR "invalid|cannot use 1 << s as type float32"
196 delete(m2, 1.<<s) // ERROR "invalid|cannot use 1 << s as type float32"
197 delete(m2, 1.1<<s) // ERROR "invalid|cannot use 1.1 << s as type float32"
205 _ = 1 << (1.1 << s) // ERROR "non-integer|truncated|must be integer"
206 _ = 1. << (1 << s) // ERROR "non-integer|shift of type float64|must be integer"
207 _ = 1. << (1. << s) // ERROR "non-integer|shift of type float64|must be integer"
208 _ = 1.1 << (1.1 << s) // ERROR "invalid|non-integer|truncated"
210 _ = (1 << s) << (1 << s)
211 _ = (1 << s) << (1. << s)
212 _ = (1 << s) << (1.1 << s) // ERROR "truncated|must be integer"
213 _ = (1. << s) << (1 << s) // ERROR "non-integer|shift of type float64|must be integer"
214 _ = (1. << s) << (1. << s) // ERROR "non-integer|shift of type float64|must be integer"
215 _ = (1.1 << s) << (1.1 << s) // ERROR "invalid|non-integer|truncated"
220 x = 1 << (1.1 << s) // ERROR "truncated|must be integer"
223 x = 1.1 << (1.1 << s) // ERROR "truncated|must be integer"
225 x = (1 << s) << (1 << s)
226 x = (1 << s) << (1. << s)
227 x = (1 << s) << (1.1 << s) // ERROR "truncated|must be integer"
228 x = (1. << s) << (1 << s)
229 x = (1. << s) << (1. << s)
230 x = (1.1 << s) << (1.1 << s) // ERROR "truncated|must be integer"
233 y = 1 << (1 << s) // ERROR "non-integer|type float32"
234 y = 1 << (1. << s) // ERROR "non-integer|type float32"
235 y = 1 << (1.1 << s) // ERROR "invalid|truncated|float32"
236 y = 1. << (1 << s) // ERROR "non-integer|type float32"
237 y = 1. << (1. << s) // ERROR "non-integer|type float32"
238 y = 1.1 << (1.1 << s) // ERROR "invalid|truncated|float32"
241 z = (1 << s) << (1 << s) // ERROR "non-integer|type complex128"
242 z = (1 << s) << (1. << s) // ERROR "non-integer|type complex128"
243 z = (1 << s) << (1.1 << s) // ERROR "invalid|truncated|complex128"
244 z = (1. << s) << (1 << s) // ERROR "non-integer|type complex128|must be integer"
245 z = (1. << s) << (1. << s) // ERROR "non-integer|type complex128|must be integer"
246 z = (1.1 << s) << (1.1 << s) // ERROR "invalid|truncated|complex128"