mirror of
https://github.com/golang/go
synced 2024-11-24 18:50:05 -07:00
ce5ae2f4bc
Adjust the dummy use function to a real use. As suggested by the println calls in the test, nilptr2.go supposes to check that a used nil pointer dereference panics. This use function is not real enough so an optimized compiler such as gccgo could eliminate the call. The spec requires that even a dummy use would cause a panic. Unfortunately, due to #31151 this is not true for gccgo at -O1 or above. Change-Id: Ie07c8a5969ab94dad82d4f7cfec30597c25b7c46 Reviewed-on: https://go-review.googlesource.com/c/go/+/176579 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
132 lines
3.6 KiB
Go
132 lines
3.6 KiB
Go
// run
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// Copyright 2013 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 main
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func main() {
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ok := true
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for _, tt := range tests {
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func() {
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defer func() {
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if err := recover(); err == nil {
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println(tt.name, "did not panic")
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ok = false
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}
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}()
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tt.fn()
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}()
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}
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if !ok {
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println("BUG")
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}
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}
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var intp *int
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var slicep *[]byte
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var a10p *[10]int
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var a10Mp *[1<<20]int
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var structp *Struct
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var bigstructp *BigStruct
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var i int
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var m *M
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var m1 *M1
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var m2 *M2
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var V interface{}
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func use(x interface{}) {
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V = x
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}
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var tests = []struct{
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name string
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fn func()
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}{
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// Edit .+1,/^}/s/^[^ ].+/ {"&", func() { println(&) }},\n {"\&&", func() { println(\&&) }},/g
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{"*intp", func() { println(*intp) }},
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{"&*intp", func() { println(&*intp) }},
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{"*slicep", func() { println(*slicep) }},
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{"&*slicep", func() { println(&*slicep) }},
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{"(*slicep)[0]", func() { println((*slicep)[0]) }},
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{"&(*slicep)[0]", func() { println(&(*slicep)[0]) }},
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{"(*slicep)[i]", func() { println((*slicep)[i]) }},
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{"&(*slicep)[i]", func() { println(&(*slicep)[i]) }},
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{"*a10p", func() { use(*a10p) }},
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{"&*a10p", func() { println(&*a10p) }},
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{"a10p[0]", func() { println(a10p[0]) }},
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{"&a10p[0]", func() { println(&a10p[0]) }},
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{"a10p[i]", func() { println(a10p[i]) }},
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{"&a10p[i]", func() { println(&a10p[i]) }},
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{"*structp", func() { use(*structp) }},
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{"&*structp", func() { println(&*structp) }},
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{"structp.i", func() { println(structp.i) }},
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{"&structp.i", func() { println(&structp.i) }},
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{"structp.j", func() { println(structp.j) }},
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{"&structp.j", func() { println(&structp.j) }},
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{"structp.k", func() { println(structp.k) }},
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{"&structp.k", func() { println(&structp.k) }},
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{"structp.x[0]", func() { println(structp.x[0]) }},
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{"&structp.x[0]", func() { println(&structp.x[0]) }},
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{"structp.x[i]", func() { println(structp.x[i]) }},
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{"&structp.x[i]", func() { println(&structp.x[i]) }},
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{"structp.x[9]", func() { println(structp.x[9]) }},
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{"&structp.x[9]", func() { println(&structp.x[9]) }},
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{"structp.l", func() { println(structp.l) }},
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{"&structp.l", func() { println(&structp.l) }},
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{"*bigstructp", func() { use(*bigstructp) }},
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{"&*bigstructp", func() { println(&*bigstructp) }},
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{"bigstructp.i", func() { println(bigstructp.i) }},
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{"&bigstructp.i", func() { println(&bigstructp.i) }},
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{"bigstructp.j", func() { println(bigstructp.j) }},
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{"&bigstructp.j", func() { println(&bigstructp.j) }},
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{"bigstructp.k", func() { println(bigstructp.k) }},
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{"&bigstructp.k", func() { println(&bigstructp.k) }},
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{"bigstructp.x[0]", func() { println(bigstructp.x[0]) }},
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{"&bigstructp.x[0]", func() { println(&bigstructp.x[0]) }},
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{"bigstructp.x[i]", func() { println(bigstructp.x[i]) }},
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{"&bigstructp.x[i]", func() { println(&bigstructp.x[i]) }},
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{"bigstructp.x[9]", func() { println(bigstructp.x[9]) }},
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{"&bigstructp.x[9]", func() { println(&bigstructp.x[9]) }},
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{"bigstructp.x[100<<20]", func() { println(bigstructp.x[100<<20]) }},
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{"&bigstructp.x[100<<20]", func() { println(&bigstructp.x[100<<20]) }},
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{"bigstructp.l", func() { println(bigstructp.l) }},
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{"&bigstructp.l", func() { println(&bigstructp.l) }},
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{"m1.F()", func() { println(m1.F()) }},
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{"m1.M.F()", func() { println(m1.M.F()) }},
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{"m2.F()", func() { println(m2.F()) }},
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{"m2.M.F()", func() { println(m2.M.F()) }},
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}
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type Struct struct {
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i int
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j float64
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k string
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x [10]int
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l []byte
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}
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type BigStruct struct {
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i int
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j float64
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k string
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x [128<<20]byte
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l []byte
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}
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type M struct {
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}
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func (m *M) F() int {return 0}
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type M1 struct {
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M
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}
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type M2 struct {
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x int
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M
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}
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