// Some runtime tests send SIGWINCH to the entire process group, so those tests
// must never run in parallel with GDB tests.
//
// See issue 39021 and https://sourceware.org/bugzilla/show_bug.cgi?id=26056.

func checkGdbEnvironment(t *testing.T) {
	testenv.MustHaveGoBuild(t)
	switch runtime.GOOS {
	case "darwin":
		t.Skip("gdb does not work on darwin")
	case "netbsd":

		// TODO(go.dev/issue/25218): Other architectures use sigreturn
		// via VDSO, which we somehow don't handle correctly.
		t.Skip("Backtrace through signal handler only works on 386 and amd64")
	}

	checkGdbEnvironment(t)
	t.Parallel()
	checkGdbVersion(t)

	coreUsesPID := canGenerateCore(t)

	// Build the source code.
	dir := t.TempDir()
	src := filepath.Join(dir, "main.go")