| // 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" |
| ) |