1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
// Copyright 2019 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.
package logopt
import (
"internal/testenv"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"runtime"
"strings"
"testing"
)
const srcCode = `package x
type pair struct {a,b int}
func bar(y *pair) *int {
return &y.b
}
var a []int
func foo(w, z *pair) *int {
if *bar(w) > 0 {
return bar(z)
}
if a[1] > 0 {
a = a[:2]
}
return &a[0]
}
`
func want(t *testing.T, out string, desired string) {
if !strings.Contains(out, desired) {
t.Errorf("did not see phrase %s in \n%s", desired, out)
}
}
func wantN(t *testing.T, out string, desired string, n int) {
if strings.Count(out, desired) != n {
t.Errorf("expected exactly %d occurences of %s in \n%s", n, desired, out)
}
}
func TestLogOpt(t *testing.T) {
t.Parallel()
testenv.MustHaveGoBuild(t)
dir, err := ioutil.TempDir("", "TestLogOpt")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
dir = fixSlash(dir) // Normalize the directory name as much as possible, for Windows testing
src := filepath.Join(dir, "file.go")
if err := ioutil.WriteFile(src, []byte(srcCode), 0644); err != nil {
t.Fatal(err)
}
outfile := filepath.Join(dir, "file.o")
t.Run("JSON_fails", func(t *testing.T) {
// Test malformed flag
out, err := testLogOpt(t, "-json=foo", src, outfile)
if err == nil {
t.Error("-json=foo succeeded unexpectedly")
}
want(t, out, "option should be")
want(t, out, "number")
// Test a version number that is currently unsupported (and should remain unsupported for a while)
out, err = testLogOpt(t, "-json=9,foo", src, outfile)
if err == nil {
t.Error("-json=0,foo succeeded unexpectedly")
}
want(t, out, "version must be")
})
// replace d (dir) with t ("tmpdir") and convert path separators to '/'
normalize := func(out []byte, d, t string) string {
s := string(out)
s = strings.ReplaceAll(s, d, t)
s = strings.ReplaceAll(s, string(os.PathSeparator), "/")
return s
}
// Ensure that <128 byte copies are not reported and that 128-byte copies are.
// Check at both 1 and 8-byte alignments.
t.Run("Copy", func(t *testing.T) {
const copyCode = `package x
func s128a1(x *[128]int8) [128]int8 {
return *x
}
func s127a1(x *[127]int8) [127]int8 {
return *x
}
func s16a8(x *[16]int64) [16]int64 {
return *x
}
func s15a8(x *[15]int64) [15]int64 {
return *x
}
`
copy := filepath.Join(dir, "copy.go")
if err := ioutil.WriteFile(copy, []byte(copyCode), 0644); err != nil {
t.Fatal(err)
}
outcopy := filepath.Join(dir, "copy.o")
// On not-amd64, test the host architecture and os
arches := []string{runtime.GOARCH}
goos0 := runtime.GOOS
if runtime.GOARCH == "amd64" { // Test many things with "linux" (wasm will get "js")
arches = []string{"arm", "arm64", "386", "amd64", "mips", "mips64", "ppc64le", "s390x", "wasm"}
goos0 = "linux"
}
for _, arch := range arches {
t.Run(arch, func(t *testing.T) {
goos := goos0
if arch == "wasm" {
goos = "js"
}
_, err := testCopy(t, dir, arch, goos, copy, outcopy)
if err != nil {
t.Error("-json=0,file://log/opt should have succeeded")
}
logged, err := ioutil.ReadFile(filepath.Join(dir, "log", "opt", "x", "copy.json"))
if err != nil {
t.Error("-json=0,file://log/opt missing expected log file")
}
slogged := normalize(logged, string(uriIfy(dir)), string(uriIfy("tmpdir")))
t.Logf("%s", slogged)
want(t, slogged, `{"range":{"start":{"line":3,"character":2},"end":{"line":3,"character":2}},"severity":3,"code":"copy","source":"go compiler","message":"128 bytes"}`)
want(t, slogged, `{"range":{"start":{"line":9,"character":2},"end":{"line":9,"character":2}},"severity":3,"code":"copy","source":"go compiler","message":"128 bytes"}`)
wantN(t, slogged, `"code":"copy"`, 2)
})
}
})
// Some architectures don't fault on nil dereference, so nilchecks are eliminated differently.
// The N-way copy test also doesn't need to run N-ways N times.
if runtime.GOARCH != "amd64" {
return
}
t.Run("Success", func(t *testing.T) {
// This test is supposed to succeed
// Note 'file://' is the I-Know-What-I-Am-Doing way of specifying a file, also to deal with corner cases for Windows.
_, err := testLogOptDir(t, dir, "-json=0,file://log/opt", src, outfile)
if err != nil {
t.Error("-json=0,file://log/opt should have succeeded")
}
logged, err := ioutil.ReadFile(filepath.Join(dir, "log", "opt", "x", "file.json"))
if err != nil {
t.Error("-json=0,file://log/opt missing expected log file")
}
// All this delicacy with uriIfy and filepath.Join is to get this test to work right on Windows.
slogged := normalize(logged, string(uriIfy(dir)), string(uriIfy("tmpdir")))
t.Logf("%s", slogged)
// below shows proper inlining and nilcheck
want(t, slogged, `{"range":{"start":{"line":9,"character":13},"end":{"line":9,"character":13}},"severity":3,"code":"nilcheck","source":"go compiler","message":"","relatedInformation":[{"location":{"uri":"file://tmpdir/file.go","range":{"start":{"line":4,"character":11},"end":{"line":4,"character":11}}},"message":"inlineLoc"}]}`)
want(t, slogged, `{"range":{"start":{"line":11,"character":6},"end":{"line":11,"character":6}},"severity":3,"code":"isInBounds","source":"go compiler","message":""}`)
want(t, slogged, `{"range":{"start":{"line":7,"character":6},"end":{"line":7,"character":6}},"severity":3,"code":"canInlineFunction","source":"go compiler","message":"cost: 35"}`)
want(t, slogged, `{"range":{"start":{"line":9,"character":13},"end":{"line":9,"character":13}},"severity":3,"code":"inlineCall","source":"go compiler","message":"x.bar"}`)
want(t, slogged, `{"range":{"start":{"line":8,"character":9},"end":{"line":8,"character":9}},"severity":3,"code":"inlineCall","source":"go compiler","message":"x.bar"}`)
})
}
func testLogOpt(t *testing.T, flag, src, outfile string) (string, error) {
run := []string{testenv.GoToolPath(t), "tool", "compile", flag, "-o", outfile, src}
t.Log(run)
cmd := exec.Command(run[0], run[1:]...)
out, err := cmd.CombinedOutput()
t.Logf("%s", out)
return string(out), err
}
func testLogOptDir(t *testing.T, dir, flag, src, outfile string) (string, error) {
// Notice the specified import path "x"
run := []string{testenv.GoToolPath(t), "tool", "compile", "-p", "x", flag, "-o", outfile, src}
t.Log(run)
cmd := exec.Command(run[0], run[1:]...)
cmd.Dir = dir
out, err := cmd.CombinedOutput()
t.Logf("%s", out)
return string(out), err
}
func testCopy(t *testing.T, dir, goarch, goos, src, outfile string) (string, error) {
// Notice the specified import path "x"
run := []string{testenv.GoToolPath(t), "tool", "compile", "-p", "x", "-json=0,file://log/opt", "-o", outfile, src}
t.Log(run)
cmd := exec.Command(run[0], run[1:]...)
cmd.Dir = dir
cmd.Env = []string{"GOARCH=" + goarch, "GOOS=" + goos}
out, err := cmd.CombinedOutput()
t.Logf("%s", out)
return string(out), err
}
|
