apiVersion: release-notes/v2
kind: bug-fix
area: installation
issue:
- 34811
releaseNotes:
- |

Xiaopeng Han <******@****.***> 1631603899 +0800

Xiaopeng Han <******@****.***> 1629871754 +0800

zirain <******@****.***> 1643047342 +0800

	// (see issue 38440).
	err := syscall.FlushViewOfFile(uintptr(unsafe.Pointer(&out.buf[0])), 0)
	if err != nil {
		Exitf("FlushViewOfFile failed: %v", err)
	}
	// Issue 44817: apparently the call below may be needed (according
	// to the Windows docs) in addition to the FlushViewOfFile call
	// above, " ... to flush all the dirty pages plus the metadata for

	// 	Q.3 unlocks files A and B.
	// 	P.2 unblocks and locks file B.
	// 	P.2 unlocks file B.
	//
	// These spurious errors were observed in practice on AIX and Solaris in
	// cmd/go: see https://golang.org/issue/32817.
	//
	// We work around this bug by treating EDEADLK as always spurious. If there
	// really is a lock-ordering bug between the interacting processes, it will

			t.Errorf("second Edit: %v", err)
		}
		other.Close()
	})

	f.Close()
	wait(t)
}

// TestSpuriousEDEADLK verifies that the spurious EDEADLK reported in
// https://golang.org/issue/32817 no longer occurs.
func TestSpuriousEDEADLK(t *testing.T) {
	// 	P.1 locks file A.
	// 	Q.3 locks file B.
	// 	Q.3 blocks on file A.
	// 	P.2 blocks on file B. (Spurious EDEADLK occurs here.)
	// 	P.1 unlocks file A.

00000170  0f 00 00 44 08 07 00 40  70 0a 4f 7d dc c7 4a 7a  |...D...@p.O}..Jz|
00000180  aa 47 45 8e be a6 df 02  14 c0 a0 f9 b9 a5 47 eb  |.GE...........G.|
00000190  3b d3 6f 38 17 aa 5c 48  d5 33 10 41 af 08 2c 2c  |;.o8..\H.3.A..,,|
000001a0  86 60 85 d4 22 c0 86 b2  48 1a 9c 31 78 86 7f bf  |.`.."...H..1x...|
000001b0  3f 42 cb 04 3d 1b f7 0b  14 03 03 00 01 01 16 03  |?B..=...........|

    <acronym>ISO</acronym>
    <_comment>ISO 9660 CD-ROM filesystem data</_comment>
    <magic priority="50">
      <match value="CD001" type="string" offset="32769"/>
      <match value="CD001" type="string" offset="34817"/>
      <match value="CD001" type="string" offset="36865"/>
    </magic>
    <glob pattern="*.iso"/>
  </mime-type>

  <mime-type type="application/x-itunes-bplist">

		cs = n.Y
		ncs = n.X
	}
	if cs != nil {
		cmp := n.Op()
		// Our comparison below assumes that the non-constant string
		// is on the left hand side, so rewrite "" cmp x to x cmp "".
		// See issue 24817.
		if ir.IsConst(n.X, constant.String) {
			cmp = brrev(cmp)
		}

		// maxRewriteLen was chosen empirically.
		// It is the value that minimizes cmd/go file size
		// across most architectures.