mirror of
https://github.com/golang/go
synced 2024-11-19 14:24:47 -07:00
37 lines
868 B
Go
37 lines
868 B
Go
|
// errchk $G -e $D/$F.go
|
||
|
|
|
||
|
|
// Copyright 2011 The Go Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the LICENSE file.
|
||
|
|
|
||
|
|
// Issue 1708, illegal cases.
|
||
|
|
|
||
|
|
package p
|
||
|
|
|
||
|
|
func f(x int) int { return 0 }
|
||
|
|
func g(x interface{}) int { return 0 }
|
||
|
|
func h(x float64) int { return 0 }
|
||
|
|
|
||
|
|
// from the spec
|
||
|
|
var (
|
||
|
|
s uint = 33
|
||
|
|
u = 1.0 << s // ERROR "invalid operation"
|
||
|
|
v float32 = 1 << s // ERROR "invalid operation"
|
||
|
|
)
|
||
|
|
|
||
|
|
// non-constant shift expressions
|
||
|
|
var (
|
||
|
|
e1 = g(2.0 << s) // ERROR "invalid operation"
|
||
|
|
f1 = h(2 << s) // ERROR "invalid operation"
|
||
|
|
g1 int64 = 1.1 << s // ERROR "truncated"
|
||
|
|
)
|
||
|
|
|
||
|
|
// constant shift expressions
|
||
|
|
const c uint = 65
|
||
|
|
|
||
|
|
var (
|
||
|
|
a2 int = 1.0 << c // ERROR "overflow"
|
||
|
|
b2 = 1.0 << c // ERROR "overflow"
|
||
|
|
d2 = f(1.0 << c) // ERROR "overflow"
|
||
|
|
)
|