test/script/trusted/NASHORN-653.js

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1 /*
2 * Copyright (c) 2010, 2013, 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 * NASHORN-653 : Various problems with isTerminal and dead code generation from ASM
26 *
27 * @test
28 * @run
29 */
30
31 var script = " \
32 function a() { \
33 return true; \
34 } \
35 \
36 function b() { \
37 while (x) { \
38 return true; \
39 } \
40 } \
41 \
42 function c() { \
43 while (true) { \
44 return true; \
45 } \
46 } \
47 \
48 function d() { \
49 do { \
50 return true; \
51 } while (x); \
52 } \
53 \
54 function f() { \
55 for (;;) { \
56 return true; \
57 } \
58 } \
59 \
60 function e() { \
61 for (;;) { \
62 return true; \
63 } \
64 } \
65 \
66 function g() { \
67 for(;;) { \
68 print('goes on and on and on ... '); \
69 } \
70 print('x'); \
71 } \
72 ";
73
74 function runScriptEngine(opts, code) {
75 var imports = new JavaImporter(
76 Packages.jdk.nashorn.api.scripting,
77 java.io, java.lang, java.util);
78
79 with(imports) {
80 var fac = new NashornScriptEngineFactory();
81 // get current System.err
82 var oldErr = System.err;
83 var baos = new ByteArrayOutputStream();
84 var newErr = new PrintStream(baos);
85 try {
86 // set new standard err
87 System.setErr(newErr);
88 var engine = fac.getScriptEngine(Java.to(opts, "java.lang.String[]"));
89 engine.eval(code);
90 newErr.flush();
91 return new java.lang.String(baos.toByteArray());
92 } finally {
93 // restore System.err to old value
94 System.setErr(oldErr);
95 }
96 }
97 }
98
99 var result = runScriptEngine([ "--print-code" ], script);
100
101 if (result.indexOf("NOP") != -1) {
102 fail("ASM genenerates NOP*/ATHROW sequences - dead code is still in the script");
103 }

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