if len(b) != 0 {
					t.Logf("## instrumented run output:\n%s", b)
				}
				if err != nil {
					t.Fatalf("instrumented run error: %v", err)
				}
			}
		}
	}

	// At this point we can fork off a bunch of child tests
	// to check different tool modes.
	t.Run("MergeSimple", func(t *testing.T) {
		t.Parallel()
		testMergeSimple(t, s, s.outdirs[0], s.outdirs[1], "set")

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func fork() (pid int, err error) {
	r0, _, e1 := rawSyscall(abi.FuncPCABI0(libc_fork_trampoline), 0, 0, 0)
	pid = int(r0)
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

func libc_fork_trampoline()

//go:cgo_import_dynamic libc_fork fork "libc.so"

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

	gp := getg().m.curg

	// Block signals during a fork, so that the child does not run
	// a signal handler before exec if a signal is sent to the process
	// group. See issue #18600.
	gp.m.locks++
	sigsave(&gp.m.sigmask)
	sigblock(false)

	// This function is called before fork in syscall package.
	// Code between fork and exec must not allocate memory nor even try to grow stack.

		cmd.Stderr = &stderrBuf
		err := cmd.Start()
		if err == nil {
			break
		}
		if isETXTBSY(err) {
			// If the script (or its host process) just wrote the executable we're
			// trying to run, a fork+exec in another thread may be holding open the FD
			// that we used to write the executable (see https://go.dev/issue/22315).
			// Since the descriptor should have CLOEXEC set, the problem should

        expected.add("maven-it-plugin-packaging");
        expected.add("maven-it-plugin-log-file");
        expected.add("maven-it-plugin-expression");
        expected.add("maven-it-plugin-fork");
        expected.add("maven-it-plugin-touch");

        List<String> actual = new ArrayList<>();
        @SuppressWarnings("unchecked")
        List<Plugin> plugins = (List<Plugin>) pom.getValue("build/plugins");

	type Expr = ast.Expr
	type identType = ast.Ident
	identName := func(n *identType) string { return n.Name }
	sKey, sValue := s.Key, s.Value
	var sExtra ast.Expr = nil // (used only in types2 fork)
	isDef := s.Tok == token.DEFINE
	rangeVar := s.X
	noNewVarPos := inNode(s, s.TokPos)

	// Everything from here on is shared between cmd/compile/internal/types2 and go/types.

			if have[i] < min {
				t.Logf("%s has %d samples out of %d, want at least %d, ideally %d", name, have[i], total, min, total/uintptr(len(have)))
				ok = false
			}
		}
		return
	}
}

// Fork can hang if preempted with signals frequently enough (see issue 5517).
// Ensure that we do not do this.
func TestCPUProfileWithFork(t *testing.T) {
	testenv.MustHaveExec(t)

	exe, err := os.Executable()

//
//go:nowritebarrierrec
func newstack() {
	thisg := getg()
	// TODO: double check all gp. shouldn't be getg().
	if thisg.m.morebuf.g.ptr().stackguard0 == stackFork {
		throw("stack growth after fork")
	}
	if thisg.m.morebuf.g.ptr() != thisg.m.curg {
		print("runtime: newstack called from g=", hex(thisg.m.morebuf.g), "\n"+"\tm=", thisg.m, " m->curg=", thisg.m.curg, " m->g0=", thisg.m.g0, " m->gsignal=", thisg.m.gsignal, "\n")

// but not really be pointers, and adjusting their value would break the call.
//
// //go:norace, on RawSyscall, to avoid race instrumentation if RawSyscall is
// called after fork, or from a signal handler.
//
// //go:linkname to ensure ABI wrappers are generated for external callers
// (notably x/sys/unix assembly).

//go:uintptrkeepalive
//go:nosplit
//go:norace
//go:linkname RawSyscall

		// or v2/go.mod should exist and claim v2. Not both.
		// Note that we don't check the full path, just the major suffix,
		// because of replacement modules. This might be a fork of
		// the real module, found at a different path, usable only in
		// a replace directive.
		dir2 := path.Join(r.codeDir, r.pathMajor[1:])
		file2 = path.Join(dir2, "go.mod")