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proc/native: disable watchpoints on Windows (#2769)

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There are persistent issues with watchpoints on Windows, it is not
clear whether it's a problem with the VM running the tests or if there
is a real bug in our implementation of hardware breakpoints on Windows.
Until the cause can be determined watchpoints on Windows will be
disabled.

Updates #2768
This commit is contained in:
Alessandro Arzilli 2021-10-30 15:47:38 +02:00 committed by GitHub
parent 19ce116bb2
commit af1c36365b
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 11 additions and 1 deletions
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3
Documentation/backend_test_health.md
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@ -20,6 +20,7 @@ Tests skipped by each supported backend:
* 1 broken - cgo stacktraces
* pie skipped = 2
* 2 upstream issue - https://github.com/golang/go/issues/29322
* windows skipped = 2
* windows skipped = 5
* 1 broken
* 3 see https://github.com/go-delve/delve/issues/2768
* 1 upstream issue

6
pkg/proc/native/threads_windows.go
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@ -11,6 +11,8 @@ import (
"github.com/go-delve/delve/pkg/proc/winutil"
)
const enableHardwareBreakpoints = false // see https://github.com/go-delve/delve/issues/2768
// waitStatus is a synonym for the platform-specific WaitStatus
type waitStatus sys.WaitStatus
@ -159,6 +161,10 @@ func (t *nativeThread) restoreRegisters(savedRegs proc.Registers) error {
}
func (t *nativeThread) withDebugRegisters(f func(*amd64util.DebugRegisters) error) error {
if !enableHardwareBreakpoints {
return errors.New("hardware breakpoints not supported")
}
context := winutil.NewCONTEXT()
context.ContextFlags = _CONTEXT_DEBUG_REGISTERS

3
pkg/proc/proc_test.go
View File

@ -5378,6 +5378,7 @@ func TestVariablesWithExternalLinking(t *testing.T) {
func TestWatchpointsBasic(t *testing.T) {
skipOn(t, "not implemented", "freebsd")
skipOn(t, "not implemented", "386")
skipOn(t, "see https://github.com/go-delve/delve/issues/2768", "windows")
protest.AllowRecording(t)
position1 := 19
@ -5436,6 +5437,7 @@ func TestWatchpointsBasic(t *testing.T) {
func TestWatchpointCounts(t *testing.T) {
skipOn(t, "not implemented", "freebsd")
skipOn(t, "not implemented", "386")
skipOn(t, "see https://github.com/go-delve/delve/issues/2768", "windows")
protest.AllowRecording(t)
withTestProcess("databpcountstest", t, func(p *proc.Target, fixture protest.Fixture) {
@ -5550,6 +5552,7 @@ func TestDwrapStartLocation(t *testing.T) {
func TestWatchpointStack(t *testing.T) {
skipOn(t, "not implemented", "freebsd")
skipOn(t, "not implemented", "386")
skipOn(t, "see https://github.com/go-delve/delve/issues/2768", "windows")
protest.AllowRecording(t)
position1 := 17