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  	}{
    37  		{src: "msan.go"},
    38  		{src: "msan2.go"},
    39  		{src: "msan2_cmsan.go"},
    40  		{src: "msan3.go"},
    41  		{src: "msan4.go"},
    42  		{src: "msan5.go"},
    43  		{src: "msan6.go"},
    44  		{src: "msan7.go"},
    45  		{src: "msan8.go"},
    46  		{src: "msan_fail.go", wantErr: true},
    47  	}
    48  	for _, tc := range cases {
    49  		tc := tc
    50  		name := strings.TrimSuffix(tc.src, ".go")
    51  		t.Run(name, func(t *testing.T) {
    52  			t.Parallel()
    53  
    54  			dir := newTempDir(t)
    55  			defer dir.RemoveAll(t)
    56  
    57  			outPath := dir.Join(name)
    58  			mustRun(t, config.goCmd("build", "-o", outPath, srcPath(tc.src)))
    59  
    60  			cmd := hangProneCmd(outPath)
    61  			if tc.wantErr {
    62  				out, err := cmd.CombinedOutput()
    63  				if err != nil {
    64  					return
    65  				}
    66  				t.Fatalf("%#q exited without error; want MSAN failure\n%s", strings.Join(cmd.Args, " "), out)
    67  			}
    68  			mustRun(t, cmd)
    69  		})
    70  	}
    71  }
    72
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