if s == nil || s.state.get() != mSpanInUse || p < s.base() || p >= s.limit {
		return nil
	}
	return s
}

// pageIndexOf returns the arena, page index, and page mask for pointer p.
// The caller must ensure p is in the heap.
func pageIndexOf(p uintptr) (arena *heapArena, pageIdx uintptr, pageMask uint8) {
	ai := arenaIndex(p)
	arena = mheap_.arenas[ai.l1()][ai.l2()]
	pageIdx = ((p / pageSize) / 8) % uintptr(len(arena.pageInUse))

 * <td>文字</td>
 * <td>文字</td>
 * <td>×</td>
 * </tr>
 * </table>
 * <p>
 * 引数に{@link InputStream}/{@link OutputStream}/{@link Reader}/{@link Writer}
 * を受け取るメソッドは、 どれも引数に対して{@link Closeable#close()}を呼び出しません。 クローズする責務は呼び出し側にあります。
 * </p>
 * <p>
 * どのメソッドも発生した{@link IOException}は{@link IORuntimeException}にラップしてスローされます。
 * </p>
 *
 * @author koichik
 */
public abstract class CopyUtil {

	{"http://a/b/c/d;p?q", "g#s", "http://a/b/c/g#s"},
	{"http://a/b/c/d;p?q", "g?y#s", "http://a/b/c/g?y#s"},
	{"http://a/b/c/d;p?q", ";x", "http://a/b/c/;x"},
	{"http://a/b/c/d;p?q", "g;x", "http://a/b/c/g;x"},
	{"http://a/b/c/d;p?q", "g;x?y#s", "http://a/b/c/g;x?y#s"},
	{"http://a/b/c/d;p?q", "", "http://a/b/c/d;p?q"},
	{"http://a/b/c/d;p?q", ".", "http://a/b/c/"},
	{"http://a/b/c/d;p?q", "./", "http://a/b/c/"},

		// proto format
		var w bytes.Buffer
		Lookup("block").WriteTo(&w, 0)
		p, err := profile.Parse(&w)
		if err != nil {
			t.Fatalf("failed to parse profile: %v", err)
		}
		t.Logf("parsed proto: %s", p)
		if err := p.CheckValid(); err != nil {
			t.Fatalf("invalid profile: %v", err)
		}

		stks := stacks(p)
		for _, test := range tests {
			if !containsStack(stks, test.stk) {

	VLD1.P	(R3), [V31.H8, V0.H8]                           // 7fa4df4c
	VLD1.P	(R8)(R20), [V21.B16, V22.B16]                   // 15a1d44c
	VLD1.P	64(R1), [V5.B16, V6.B16, V7.B16, V8.B16]        // 2520df4c
	VLD1.P	1(R0), V4.B[15]                                 // 041cdf4d
	VLD1.P	2(R0), V4.H[7]                                  // 0458df4d
	VLD1.P	4(R0), V4.S[3]                                  // 0490df4d

	{"%-10T", nil, "<nil>     "},

	// %p with pointers
	{"%p", (*int)(nil), "0x0"},
	{"%#p", (*int)(nil), "0"},
	{"%p", &intVar, "0xPTR"},
	{"%#p", &intVar, "PTR"},
	{"%p", &array, "0xPTR"},
	{"%p", &slice, "0xPTR"},
	{"%8.2p", (*int)(nil), "    0x00"},
	{"%-20.16p", &intVar, "0xPTR  "},
	// %p on non-pointers
	{"%p", make(chan int), "0xPTR"},
	{"%p", make(map[int]int), "0xPTR"},
	{"%p", func() {}, "0xPTR"},

                    validate20PluginVersion(
                            "build.plugins.plugin.version", problems, p.getVersion(), p.getKey(), p, request);

                    validateBoolean(
                            "build.plugins.plugin.inherited",
                            EMPTY,
                            problems,

   * }</pre>
   *
   * <p>Any structural changes to the underlying iteration (aside from those performed by the
   * iterator's own {@link PeekingIterator#remove()} method) will leave the iterator in an undefined
   * state.
   *
   * <p>The returned iterator does not support removal after peeking, as explained by {@link
   * PeekingIterator#remove()}.
   *

   * }</pre>
   *
   * <p>Any structural changes to the underlying iteration (aside from those performed by the
   * iterator's own {@link PeekingIterator#remove()} method) will leave the iterator in an undefined
   * state.
   *
   * <p>The returned iterator does not support removal after peeking, as explained by {@link
   * PeekingIterator#remove()}.
   *

	tg.setenv("GOCACHE", tg.path("cache"))
	tg.tempFile("gopath1/src/p/p.go", "package p; func F(){}\n")
	tg.tempFile("gopath2/src/p/p.go", "package p; func F(){}\n")

	tg.setenv("GOPATH", tg.path("gopath1"))
	tg.run("list", "-f={{.Target}}", "p")
	target1 := strings.TrimSpace(tg.getStdout())
	tg.run("install", "p")
	tg.wantNotStale("p", "", "p stale after install")

	tg.setenv("GOPATH", tg.path("gopath2"))