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// Copyright 2020 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 runtime_test
import (
"internal/testenv"
"os/exec"
"runtime"
"strings"
"testing"
)
func TestCheckPtr(t *testing.T) {
if runtime.Compiler == "gccgo" {
t.Skip("gccgo does not have -d=checkptr")
}
// This test requires rebuilding packages with -d=checkptr=1,
// so it's somewhat slow.
if testing.Short() {
t.Skip("skipping test in -short mode")
}
t.Parallel()
testenv.MustHaveGoRun(t)
exe, err := buildTestProg(t, "testprog", "-gcflags=all=-d=checkptr=1")
if err != nil {
t.Fatal(err)
}
testCases := []struct {
cmd string
want string
}{
{"CheckPtrAlignmentPtr", "fatal error: checkptr: misaligned pointer conversion\n"},
{"CheckPtrAlignmentNoPtr", ""},
{"CheckPtrAlignmentNilPtr", ""},
{"CheckPtrArithmetic", "fatal error: checkptr: pointer arithmetic result points to invalid allocation\n"},
{"CheckPtrArithmetic2", "fatal error: checkptr: pointer arithmetic result points to invalid allocation\n"},
{"CheckPtrSize", "fatal error: checkptr: converted pointer straddles multiple allocations\n"},
{"CheckPtrSmall", "fatal error: checkptr: pointer arithmetic computed bad pointer value\n"},
{"CheckPtrSliceOK", ""},
{"CheckPtrSliceFail", "fatal error: checkptr: unsafe.Slice result straddles multiple allocations\n"},
}
for _, tc := range testCases {
tc := tc
t.Run(tc.cmd, func(t *testing.T) {
t.Parallel()
got, err := testenv.CleanCmdEnv(exec.Command(exe, tc.cmd)).CombinedOutput()
if err != nil {
t.Log(err)
}
if tc.want == "" {
if len(got) > 0 {
t.Errorf("output:\n%s\nwant no output", got)
}
return
}
if !strings.HasPrefix(string(got), tc.want) {
t.Errorf("output:\n%s\n\nwant output starting with: %s", got, tc.want)
}
})
}
}
func TestCheckPtr2(t *testing.T) {
// This test requires rebuilding packages with -d=checkptr=2,
// so it's somewhat slow.
if testing.Short() {
t.Skip("skipping test in -short mode")
}
t.Parallel()
testenv.MustHaveGoRun(t)
exe, err := buildTestProg(t, "testprog", "-gcflags=all=-d=checkptr=2")
if err != nil {
t.Fatal(err)
}
testCases := []struct {
cmd string
want string
}{
{"CheckPtrAlignmentNested", "fatal error: checkptr: converted pointer straddles multiple allocations\n"},
}
for _, tc := range testCases {
tc := tc
t.Run(tc.cmd, func(t *testing.T) {
t.Parallel()
got, err := testenv.CleanCmdEnv(exec.Command(exe, tc.cmd)).CombinedOutput()
if err != nil {
t.Log(err)
}
if tc.want == "" {
if len(got) > 0 {
t.Errorf("output:\n%s\nwant no output", got)
}
return
}
if !strings.HasPrefix(string(got), tc.want) {
t.Errorf("output:\n%s\n\nwant output starting with: %s", got, tc.want)
}
})
}
}
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