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861aa4698a
Fixes #5014. R=golang-dev, r, rsc, daniel.morsing CC=golang-dev https://golang.org/cl/7664043
58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
// errorcheck
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test illegal shifts.
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// Issue 1708, illegal cases.
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// Does not compile.
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package p
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func f(x int) int { return 0 }
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func g(x interface{}) int { return 0 }
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func h(x float64) int { return 0 }
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// from the spec
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var (
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s uint = 33
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u = 1.0 << s // ERROR "invalid operation|shift of non-integer operand"
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v float32 = 1 << s // ERROR "invalid" "as type float32"
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)
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// non-constant shift expressions
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var (
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e1 = g(2.0 << s) // ERROR "invalid" "as type interface"
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f1 = h(2 << s) // ERROR "invalid" "as type float64"
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g1 int64 = 1.1 << s // ERROR "truncated"
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)
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// constant shift expressions
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const c uint = 65
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var (
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a2 int = 1.0 << c // ERROR "overflow"
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b2 = 1.0 << c // ERROR "overflow"
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d2 = f(1.0 << c) // ERROR "overflow"
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)
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var (
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// issues 4882, 4936.
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a3 = 1.0<<s + 0 // ERROR "invalid operation|shift of non-integer operand"
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// issue 4937
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b3 = 1<<s + 1 + 1.0 // ERROR "invalid operation|shift of non-integer operand"
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// issue 5014
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c3 = complex(1<<s, 0) // ERROR "shift of type float64"
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d3 int = complex(1<<s, 3) // ERROR "cannot use.*as type int" "shift of type float64"
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e3 = real(1 << s) // ERROR "invalid"
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f3 = imag(1 << s) // ERROR "invalid"
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)
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var (
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a4 float64
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b4 int
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c4 = complex(1<<s, a4) // ERROR "shift of type float64"
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d4 = complex(1<<s, b4) // ERROR "invalid"
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)
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