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" "as type float32"
24 // non-constant shift expressions
26 e1 = g(2.0 << s) // ERROR "invalid|shift of non-integer operand" "as type interface"
27 f1 = h(2 << s) // ERROR "invalid" "as type float64"
28 g1 int64 = 1.1 << s // ERROR "truncated"
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"
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
69 _, _, _, _, _, _, _, _, _, _ = j, k, m, n, o, u, u1, u2, v, w
73 // shifts in comparisons w/ untyped operands
76 _ = 1<<s == 1. // ERROR "invalid|shift of type float64"
77 _ = 1.<<s == 1 // ERROR "invalid|shift of type float64"
78 _ = 1.<<s == 1. // ERROR "invalid|non-integer|shift of type float64"
81 _ = 1<<s+1 == 1. // ERROR "invalid|shift of type float64"
82 _ = 1<<s+1. == 1 // ERROR "invalid|shift of type float64"
83 _ = 1<<s+1. == 1. // ERROR "invalid|shift of type float64"
84 _ = 1.<<s+1 == 1 // ERROR "invalid|shift of type float64"
85 _ = 1.<<s+1 == 1. // ERROR "invalid|shift of type float64"
86 _ = 1.<<s+1. == 1 // ERROR "invalid|shift of type float64"
87 _ = 1.<<s+1. == 1. // ERROR "invalid|non-integer|shift of type float64"
90 _ = 1<<s == 1.<<s // ERROR "invalid|shift of type float64"
91 _ = 1.<<s == 1<<s // ERROR "invalid|shift of type float64"
92 _ = 1.<<s == 1.<<s // ERROR "invalid|non-integer|shift of type float64"
95 _ = 1<<s+1<<s == 1. // ERROR "invalid|shift of type float64"
96 _ = 1<<s+1.<<s == 1 // ERROR "invalid|shift of type float64"
97 _ = 1<<s+1.<<s == 1. // ERROR "invalid|shift of type float64"
98 _ = 1.<<s+1<<s == 1 // ERROR "invalid|shift of type float64"
99 _ = 1.<<s+1<<s == 1. // ERROR "invalid|shift of type float64"
100 _ = 1.<<s+1.<<s == 1 // ERROR "invalid|shift of type float64"
101 _ = 1.<<s+1.<<s == 1. // ERROR "invalid|non-integer|shift of type float64"
103 _ = 1<<s+1<<s == 1<<s+1<<s
104 _ = 1<<s+1<<s == 1<<s+1.<<s // ERROR "invalid|shift of type float64"
105 _ = 1<<s+1<<s == 1.<<s+1<<s // ERROR "invalid|shift of type float64"
106 _ = 1<<s+1<<s == 1.<<s+1.<<s // ERROR "invalid|shift of type float64"
107 _ = 1<<s+1.<<s == 1<<s+1<<s // ERROR "invalid|shift of type float64"
108 _ = 1<<s+1.<<s == 1<<s+1.<<s // ERROR "invalid|shift of type float64"
109 _ = 1<<s+1.<<s == 1.<<s+1<<s // ERROR "invalid|shift of type float64"
110 _ = 1<<s+1.<<s == 1.<<s+1.<<s // ERROR "invalid|non-integer|shift of type float64"
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|non-integer|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|non-integer|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|non-integer|shift of type float64"
121 // shifts in comparisons w/ typed operands
126 _ = 1.1<<s == x // ERROR "truncated"
130 _ = 1<<s+x == 1.1 // ERROR "truncated"
133 _ = 1.<<s+x == 1.1 // ERROR "truncated"
134 _ = 1.1<<s+x == 1 // ERROR "truncated"
135 _ = 1.1<<s+x == 1. // ERROR "truncated"
136 _ = 1.1<<s+x == 1.1 // ERROR "truncated"
140 _ = 1.1<<s == x<<s // ERROR "truncated"
143 // shifts as operands in non-arithmetic operations and as arguments
149 // For now, the spec disallows these. We may revisit past Go 1.1.
150 _ = a[1.<<s] // ERROR "integer|shift of type float64"
151 _ = a[1.1<<s] // ERROR "integer|shift of type float64"
155 _ = make([]int, 1.<<s)
156 _ = make([]int, 1.1<<s) // ERROR "non-integer|truncated"
159 _ = float32(1 << s) // ERROR "non-integer|shift of type float32"
161 _ = float32(1. << s) // ERROR "non-integer|shift of type float32"
162 _ = float32(1.1 << s) // ERROR "non-integer|shift of type float32"
166 _ = append(a, 1.1<<s) // ERROR "truncated"
169 _ = append(b, 1<<s) // ERROR "non-integer|type float32"
170 _ = append(b, 1.<<s) // ERROR "non-integer|type float32"
171 _ = append(b, 1.1<<s) // ERROR "non-integer|type float32"
173 _ = complex(1.<<s, 0) // ERROR "non-integer|shift of type float64"
174 _ = complex(1.1<<s, 0) // ERROR "non-integer|shift of type float64"
175 _ = complex(0, 1.<<s) // ERROR "non-integer|shift of type float64"
176 _ = complex(0, 1.1<<s) // ERROR "non-integer|shift of type float64"
180 _ = complex(1<<s, a4) // ERROR "non-integer|shift of type float64"
181 _ = complex(1<<s, b4) // ERROR "invalid|non-integer|"
183 var m1 map[int]string
186 delete(m1, 1.1<<s) // ERROR "truncated|shift of type float64"
188 var m2 map[float32]string
189 delete(m2, 1<<s) // ERROR "invalid|cannot use 1 << s as type float32"
190 delete(m2, 1.<<s) // ERROR "invalid|cannot use 1 << s as type float32"
191 delete(m2, 1.1<<s) // ERROR "invalid|cannot use 1.1 << s as type float32"
199 _ = 1 << (1.1 << s) // ERROR "non-integer|truncated"
200 _ = 1. << (1 << s) // ERROR "non-integer|shift of type float64"
201 _ = 1. << (1. << s) // ERROR "non-integer|shift of type float64"
202 _ = 1.1 << (1.1 << s) // ERROR "invalid|non-integer|truncated"
204 _ = (1 << s) << (1 << s)
205 _ = (1 << s) << (1. << s)
206 _ = (1 << s) << (1.1 << s) // ERROR "truncated"
207 _ = (1. << s) << (1 << s) // ERROR "non-integer|shift of type float64"
208 _ = (1. << s) << (1. << s) // ERROR "non-integer|shift of type float64"
209 _ = (1.1 << s) << (1.1 << s) // ERROR "invalid|non-integer|truncated"
214 x = 1 << (1.1 << s) // ERROR "truncated"
217 x = 1.1 << (1.1 << s) // ERROR "truncated"
219 x = (1 << s) << (1 << s)
220 x = (1 << s) << (1. << s)
221 x = (1 << s) << (1.1 << s) // ERROR "truncated"
222 x = (1. << s) << (1 << s)
223 x = (1. << s) << (1. << s)
224 x = (1.1 << s) << (1.1 << s) // ERROR "truncated"
227 y = 1 << (1 << s) // ERROR "non-integer|type float32"
228 y = 1 << (1. << s) // ERROR "non-integer|type float32"
229 y = 1 << (1.1 << s) // ERROR "invalid|truncated|float32"
230 y = 1. << (1 << s) // ERROR "non-integer|type float32"
231 y = 1. << (1. << s) // ERROR "non-integer|type float32"
232 y = 1.1 << (1.1 << s) // ERROR "invalid|truncated|float32"
235 z = (1 << s) << (1 << s) // ERROR "non-integer|type complex128"
236 z = (1 << s) << (1. << s) // ERROR "non-integer|type complex128"
237 z = (1 << s) << (1.1 << s) // ERROR "invalid|truncated|complex128"
238 z = (1. << s) << (1 << s) // ERROR "non-integer|type complex128"
239 z = (1. << s) << (1. << s) // ERROR "non-integer|type complex128"
240 z = (1.1 << s) << (1.1 << s) // ERROR "invalid|truncated|complex128"