github.com/x04/go/src@v0.0.0-20200202162449-3d481ceb3525/runtime/checkptr_test.go (about)

     1  // Copyright 2020 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 runtime_test
     6  
     7  import (
     8  	"github.com/x04/go/src/internal/testenv"
     9  	"github.com/x04/go/src/os/exec"
    10  	"github.com/x04/go/src/strings"
    11  	"github.com/x04/go/src/testing"
    12  )
    13  
    14  func TestCheckPtr(t *testing.T) {
    15  	t.Parallel()
    16  	testenv.MustHaveGoRun(t)
    17  
    18  	exe, err := buildTestProg(t, "testprog", "-gcflags=all=-d=checkptr=1")
    19  	if err != nil {
    20  		t.Fatal(err)
    21  	}
    22  
    23  	testCases := []struct {
    24  		cmd	string
    25  		want	string
    26  	}{
    27  		{"CheckPtrAlignment", "fatal error: checkptr: unsafe pointer conversion\n"},
    28  		{"CheckPtrArithmetic", "fatal error: checkptr: unsafe pointer arithmetic\n"},
    29  		{"CheckPtrSize", "fatal error: checkptr: unsafe pointer conversion\n"},
    30  		{"CheckPtrSmall", "fatal error: checkptr: unsafe pointer arithmetic\n"},
    31  	}
    32  
    33  	for _, tc := range testCases {
    34  		tc := tc
    35  		t.Run(tc.cmd, func(t *testing.T) {
    36  			t.Parallel()
    37  			got, err := testenv.CleanCmdEnv(exec.Command(exe, tc.cmd)).CombinedOutput()
    38  			if err != nil {
    39  				t.Log(err)
    40  			}
    41  			if !strings.HasPrefix(string(got), tc.want) {
    42  				t.Errorf("output:\n%s\n\nwant output starting with: %s", got, tc.want)
    43  			}
    44  		})
    45  	}
    46  }