// 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|shift of non-integer operand" v float32 = 1 << s // ERROR "invalid" "as type float32" ) // non-constant shift expressions var ( e1 = g(2.0 << s) // ERROR "invalid" "as type interface" f1 = h(2 << s) // ERROR "invalid" "as type float64" 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" )