1a2f01efa6
Update the Go library to the 1.10beta1 release.
Requires a few changes to the compiler for modifications to the map
runtime code, and to handle some nowritebarrier cases in the runtime.
Reviewed-on: https://go-review.googlesource.com/86455
gotools/:
* Makefile.am (go_cmd_vet_files): New variable.
(go_cmd_buildid_files, go_cmd_test2json_files): New variables.
(s-zdefaultcc): Change from constants to functions.
(noinst_PROGRAMS): Add vet, buildid, and test2json.
(cgo$(EXEEXT)): Link against $(LIBGOTOOL).
(vet$(EXEEXT)): New target.
(buildid$(EXEEXT)): New target.
(test2json$(EXEEXT)): New target.
(install-exec-local): Install all $(noinst_PROGRAMS).
(uninstall-local): Uninstasll all $(noinst_PROGRAMS).
(check-go-tool): Depend on $(noinst_PROGRAMS). Copy down
objabi.go.
(check-runtime): Depend on $(noinst_PROGRAMS).
(check-cgo-test, check-carchive-test): Likewise.
(check-vet): New target.
(check): Depend on check-vet. Look at cmd_vet-testlog.
(.PHONY): Add check-vet.
* Makefile.in: Rebuild.
From-SVN: r256365
64 lines
1.9 KiB
Go
64 lines
1.9 KiB
Go
// Copyright 2014 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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package testdata
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import (
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"reflect"
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"unsafe"
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)
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func f() {
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var x unsafe.Pointer
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var y uintptr
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x = unsafe.Pointer(y) // ERROR "possible misuse of unsafe.Pointer"
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y = uintptr(x)
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// only allowed pointer arithmetic is ptr +/-/&^ num.
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// num+ptr is technically okay but still flagged: write ptr+num instead.
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x = unsafe.Pointer(uintptr(x) + 1)
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x = unsafe.Pointer(1 + uintptr(x)) // ERROR "possible misuse of unsafe.Pointer"
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x = unsafe.Pointer(uintptr(x) + uintptr(x)) // ERROR "possible misuse of unsafe.Pointer"
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x = unsafe.Pointer(uintptr(x) - 1)
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x = unsafe.Pointer(1 - uintptr(x)) // ERROR "possible misuse of unsafe.Pointer"
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x = unsafe.Pointer(uintptr(x) &^ 3)
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x = unsafe.Pointer(1 &^ uintptr(x)) // ERROR "possible misuse of unsafe.Pointer"
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// certain uses of reflect are okay
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var v reflect.Value
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x = unsafe.Pointer(v.Pointer())
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x = unsafe.Pointer(v.UnsafeAddr())
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var s1 *reflect.StringHeader
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x = unsafe.Pointer(s1.Data)
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var s2 *reflect.SliceHeader
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x = unsafe.Pointer(s2.Data)
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var s3 reflect.StringHeader
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x = unsafe.Pointer(s3.Data) // ERROR "possible misuse of unsafe.Pointer"
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var s4 reflect.SliceHeader
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x = unsafe.Pointer(s4.Data) // ERROR "possible misuse of unsafe.Pointer"
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// but only in reflect
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var vv V
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x = unsafe.Pointer(vv.Pointer()) // ERROR "possible misuse of unsafe.Pointer"
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x = unsafe.Pointer(vv.UnsafeAddr()) // ERROR "possible misuse of unsafe.Pointer"
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var ss1 *StringHeader
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x = unsafe.Pointer(ss1.Data) // ERROR "possible misuse of unsafe.Pointer"
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var ss2 *SliceHeader
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x = unsafe.Pointer(ss2.Data) // ERROR "possible misuse of unsafe.Pointer"
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}
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type V interface {
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Pointer() uintptr
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UnsafeAddr() uintptr
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}
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type StringHeader struct {
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Data uintptr
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}
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type SliceHeader struct {
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Data uintptr
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}
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