misc/cgo/testsanitizers/msan_test.go

   1 // Copyright 2017 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package sanitizers_test
   6
   7 import (
   8         "strings"
   9         "testing"
  10 )
  11
  12 func TestMSAN(t *testing.T) {
  13         goos, err := goEnv("GOOS")
  14         if err != nil {
  15                 t.Fatal(err)
  16         }
  17         goarch, err := goEnv("GOARCH")
  18         if err != nil {
  19                 t.Fatal(err)
  20         }
  21         // The msan tests require support for the -msan option.
  22         if !mSanSupported(goos, goarch) {
  23                 t.Skipf("skipping on %s/%s; -msan option is not supported.", goos, goarch)
  24         }
  25
  26         t.Parallel()
  27         requireOvercommit(t)
  28         config := configure("memory")
  29         config.skipIfCSanitizerBroken(t)
  30
  31         mustRun(t, config.goCmd("build", "std"))
  32
  33         cases := []struct {
  34                 src         string
  35                 wantErr     bool
  36                 experiments []string
  37         }{
  38                 {src: "msan.go"},
  39                 {src: "msan2.go"},
  40                 {src: "msan2_cmsan.go"},
  41                 {src: "msan3.go"},
  42                 {src: "msan4.go"},
  43                 {src: "msan5.go"},
  44                 {src: "msan6.go"},
  45                 {src: "msan7.go"},
  46                 {src: "msan8.go"},
  47                 {src: "msan_fail.go", wantErr: true},
  48                 // This may not always fail specifically due to MSAN. It may sometimes
  49                 // fail because of a fault. However, we don't care what kind of error we
  50                 // get here, just that we get an error. This is an MSAN test because without
  51                 // MSAN it would not fail deterministically.
  52                 {src: "arena_fail.go", wantErr: true, experiments: []string{"arenas"}},
  53         }
  54         for _, tc := range cases {
  55                 tc := tc
  56                 name := strings.TrimSuffix(tc.src, ".go")
  57                 t.Run(name, func(t *testing.T) {
  58                         t.Parallel()
  59
  60                         dir := newTempDir(t)
  61                         defer dir.RemoveAll(t)
  62
  63                         outPath := dir.Join(name)
  64                         mustRun(t, config.goCmdWithExperiments("build", []string{"-o", outPath, srcPath(tc.src)}, tc.experiments))
  65
  66                         cmd := hangProneCmd(outPath)
  67                         if tc.wantErr {
  68                                 out, err := cmd.CombinedOutput()
  69                                 if err != nil {
  70                                         return
  71                                 }
  72                                 t.Fatalf("%#q exited without error; want MSAN failure\n%s", strings.Join(cmd.Args, " "), out)
  73                         }
  74                         mustRun(t, cmd)
  75                 })
  76         }
  77 }