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comparison test/compiler/6732154/Test6732154.java @ 6142:121e5708ae96

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7169782: C2: SIGSEGV in LShiftLNode::Ideal(PhaseGVN*, bool) Summary: keep intermediate node alive till the end of the graph construction using dummy hook node trick Reviewed-by: kvn, twisti Contributed-by: vladimir.x.ivanov@oracle.com
author kvn
date Tue, 12 Jun 2012 09:47:23 -0700
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6141:e7715c222897 6142:121e5708ae96
1 /*
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 /**
26 * @test
27 * @bug 6732154
28 * @summary REG: Printing an Image using image/gif doc flavor crashes the VM, Solsparc
29 *
30 * @run main/othervm -Xcomp -XX:CompileOnly="Test6732154::ascii85Encode" Test6732154
31 */
32 public class Test6732154 {
33
34 // Exact copy of sun.print.PSPrinterJob.ascii85Encode([b)[b
35 private byte[] ascii85Encode(byte[] inArr) {
36 byte[] outArr = new byte[((inArr.length+4) * 5 / 4) + 2];
37 long p1 = 85;
38 long p2 = p1*p1;
39 long p3 = p1*p2;
40 long p4 = p1*p3;
41 byte pling = '!';
42
43 int i = 0;
44 int olen = 0;
45 long val, rem;
46
47 while (i+3 < inArr.length) {
48 val = ((long)((inArr[i++]&0xff))<<24) +
49 ((long)((inArr[i++]&0xff))<<16) +
50 ((long)((inArr[i++]&0xff))<< 8) +
51 ((long)(inArr[i++]&0xff));
52 if (val == 0) {
53 outArr[olen++] = 'z';
54 } else {
55 rem = val;
56 outArr[olen++] = (byte)(rem / p4 + pling); rem = rem % p4;
57 outArr[olen++] = (byte)(rem / p3 + pling); rem = rem % p3;
58 outArr[olen++] = (byte)(rem / p2 + pling); rem = rem % p2;
59 outArr[olen++] = (byte)(rem / p1 + pling); rem = rem % p1;
60 outArr[olen++] = (byte)(rem + pling);
61 }
62 }
63 // input not a multiple of 4 bytes, write partial output.
64 if (i < inArr.length) {
65 int n = inArr.length - i; // n bytes remain to be written
66
67 val = 0;
68 while (i < inArr.length) {
69 val = (val << 8) + (inArr[i++]&0xff);
70 }
71
72 int append = 4 - n;
73 while (append-- > 0) {
74 val = val << 8;
75 }
76 byte []c = new byte[5];
77 rem = val;
78 c[0] = (byte)(rem / p4 + pling); rem = rem % p4;
79 c[1] = (byte)(rem / p3 + pling); rem = rem % p3;
80 c[2] = (byte)(rem / p2 + pling); rem = rem % p2;
81 c[3] = (byte)(rem / p1 + pling); rem = rem % p1;
82 c[4] = (byte)(rem + pling);
83
84 for (int b = 0; b < n+1 ; b++) {
85 outArr[olen++] = c[b];
86 }
87 }
88
89 // write EOD marker.
90 outArr[olen++]='~'; outArr[olen++]='>';
91
92 /* The original intention was to insert a newline after every 78 bytes.
93 * This was mainly intended for legibility but I decided against this
94 * partially because of the (small) amount of extra space, and
95 * partially because for line breaks either would have to hardwire
96 * ascii 10 (newline) or calculate space in bytes to allocate for
97 * the platform's newline byte sequence. Also need to be careful
98 * about where its inserted:
99 * Ascii 85 decoder ignores white space except for one special case:
100 * you must ensure you do not split the EOD marker across lines.
101 */
102 byte[] retArr = new byte[olen];
103 System.arraycopy(outArr, 0, retArr, 0, olen);
104 return retArr;
105 }
106
107 public static void main(String[] args) {
108 new Test6732154().ascii85Encode(new byte[0]);
109 System.out.println("Test passed.");
110 }
111 }