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// Copyright 2016 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"
"os/exec"
"path/filepath"
"runtime"
"strings"
"testing"
)
var lldbPath string
func checkLldbPython(t *testing.T) {
cmd := exec.Command("lldb", "-P")
out, err := cmd.CombinedOutput()
if err != nil {
t.Skipf("skipping due to issue running lldb: %v\n%s", err, out)
}
lldbPath = strings.TrimSpace(string(out))
cmd = exec.Command("/usr/bin/python2.7", "-c", "import sys;sys.path.append(sys.argv[1]);import lldb; print('go lldb python support')", lldbPath)
out, err = cmd.CombinedOutput()
if err != nil {
t.Skipf("skipping due to issue running python: %v\n%s", err, out)
}
if string(out) != "go lldb python support\n" {
t.Skipf("skipping due to lack of python lldb support: %s", out)
}
if runtime.GOOS == "darwin" {
// Try to see if we have debugging permissions.
cmd = exec.Command("/usr/sbin/DevToolsSecurity", "-status")
out, err = cmd.CombinedOutput()
if err != nil {
t.Skipf("DevToolsSecurity failed: %v", err)
} else if !strings.Contains(string(out), "enabled") {
t.Skip(string(out))
}
cmd = exec.Command("/usr/bin/groups")
out, err = cmd.CombinedOutput()
if err != nil {
t.Skipf("groups failed: %v", err)
} else if !strings.Contains(string(out), "_developer") {
t.Skip("Not in _developer group")
}
}
}
const lldbHelloSource = `
package main
import "fmt"
func main() {
mapvar := make(map[string]string,5)
mapvar["abc"] = "def"
mapvar["ghi"] = "jkl"
intvar := 42
ptrvar := &intvar
fmt.Println("hi") // line 10
_ = ptrvar
}
`
const lldbScriptSource = `
import sys
sys.path.append(sys.argv[1])
import lldb
import os
TIMEOUT_SECS = 5
debugger = lldb.SBDebugger.Create()
debugger.SetAsync(True)
target = debugger.CreateTargetWithFileAndArch("a.exe", None)
if target:
print "Created target"
main_bp = target.BreakpointCreateByLocation("main.go", 10)
if main_bp:
print "Created breakpoint"
process = target.LaunchSimple(None, None, os.getcwd())
if process:
print "Process launched"
listener = debugger.GetListener()
process.broadcaster.AddListener(listener, lldb.SBProcess.eBroadcastBitStateChanged)
while True:
event = lldb.SBEvent()
if listener.WaitForEvent(TIMEOUT_SECS, event):
if lldb.SBProcess.GetRestartedFromEvent(event):
continue
state = process.GetState()
if state in [lldb.eStateUnloaded, lldb.eStateLaunching, lldb.eStateRunning]:
continue
else:
print "Timeout launching"
break
if state == lldb.eStateStopped:
for t in process.threads:
if t.GetStopReason() == lldb.eStopReasonBreakpoint:
print "Hit breakpoint"
frame = t.GetFrameAtIndex(0)
if frame:
if frame.line_entry:
print "Stopped at %s:%d" % (frame.line_entry.file.basename, frame.line_entry.line)
if frame.function:
print "Stopped in %s" % (frame.function.name,)
var = frame.FindVariable('intvar')
if var:
print "intvar = %s" % (var.GetValue(),)
else:
print "no intvar"
else:
print "Process state", state
process.Destroy()
else:
print "Failed to create target a.exe"
lldb.SBDebugger.Destroy(debugger)
sys.exit()
`
const expectedLldbOutput = `Created target
Created breakpoint
Process launched
Hit breakpoint
Stopped at main.go:10
Stopped in main.main
intvar = 42
`
func TestLldbPython(t *testing.T) {
testenv.MustHaveGoBuild(t)
if final := os.Getenv("GOROOT_FINAL"); final != "" && runtime.GOROOT() != final {
t.Skip("gdb test can fail with GOROOT_FINAL pending")
}
testenv.SkipFlaky(t, 31188)
checkLldbPython(t)
dir := t.TempDir()
src := filepath.Join(dir, "main.go")
err := os.WriteFile(src, []byte(lldbHelloSource), 0644)
if err != nil {
t.Fatalf("failed to create src file: %v", err)
}
mod := filepath.Join(dir, "go.mod")
err = os.WriteFile(mod, []byte("module lldbtest"), 0644)
if err != nil {
t.Fatalf("failed to create mod file: %v", err)
}
// As of 2018-07-17, lldb doesn't support compressed DWARF, so
// disable it for this test.
cmd := exec.Command(testenv.GoToolPath(t), "build", "-gcflags=all=-N -l", "-ldflags=-compressdwarf=false", "-o", "a.exe")
cmd.Dir = dir
cmd.Env = append(os.Environ(), "GOPATH=") // issue 31100
out, err := cmd.CombinedOutput()
if err != nil {
t.Fatalf("building source %v\n%s", err, out)
}
src = filepath.Join(dir, "script.py")
err = os.WriteFile(src, []byte(lldbScriptSource), 0755)
if err != nil {
t.Fatalf("failed to create script: %v", err)
}
cmd = exec.Command("/usr/bin/python2.7", "script.py", lldbPath)
cmd.Dir = dir
got, _ := cmd.CombinedOutput()
if string(got) != expectedLldbOutput {
if strings.Contains(string(got), "Timeout launching") {
t.Skip("Timeout launching")
}
t.Fatalf("Unexpected lldb output:\n%s", got)
}
}