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// 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"
)