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7116786: RFE: Detailed information on VerifyErrors Summary: Provide additional detail in VerifyError messages Reviewed-by: sspitsyn, acorn
author kamg
date Mon, 06 Aug 2012 15:54:45 -0400
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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 Test7116786
27 * @summary verify that VerifyError messages are as expected
28 * @library testcases.jar
29 * @run main/othervm -Xverify:all Test7116786
30 */
31
32
33 /**
34 * This class contains information regarding when a VerifyError is thrown
35 * in the verifier. Most of the data is informational-only, and can be
36 * used to track down where and why VerifyErrors are thrown. As such it
37 * is possible the information may go out-of-date.
38 *
39 * The only fields used for the purpose of testing is the 'caseName' and
40 * the 'message'. The 'caseName' corresponds to a classfile which exhibits
41 * the VerifyError, and the 'message' is a regular expression which we expect
42 * to match the verify error message. If the 'message' doesn't match what
43 * we expect, it warrents investigation to see if we are still triggering
44 * the VerifyError that we expect. It could simply just be that the message
45 * changed, which is fine.
46 *
47 * Some cases are not testable, either because the code is probably unreachable
48 * or the test classfile would be too onerous to create. These cases are
49 * marked with 'testable' == false, and the test runner will skip them.
50 */
51 class Case {
52 private String caseName; // Name of the case
53 private String file; // Source file where VerifyError is thrown
54 private String location; // enclosing function or switch case
55 private String description; // What causes this VerifyError
56 private String message; // The VerifyError message used.
57
58 private boolean testable; // Whether this case is testable or not.
59
60 public Case(String caseName, String file, boolean testable,
61 String location, String description, String message) {
62 this.caseName = caseName;
63 this.file = file;
64 this.testable = testable;
65 this.location = location;
66 this.description = description;
67 this.message = message;
68 }
69
70 String getCaseName() { return this.caseName; }
71 String getFile() { return this.file; }
72 String getLocation() { return this.location; }
73 String getDescription() { return this.description; }
74 String getMessage() { return this.message; }
75
76 boolean isTestable() { return this.testable; }
77 }
78
79 /**
80 * These are the locations in the source code where VerifyErrors are thrown
81 * as of today, 2012/07/18. These may change as the verification code is
82 * modified, which is ok. This test is trying to provide coverage for all
83 * VerifyErrors (just to make sure there are no crashes) and it's probably
84 * not necessary to update it every time the VM changes.
85 */
86 class VerifyErrorCases {
87 public static final Case[] cases = {
88
89 new Case("case00", "stackMapFrame.cpp", true, "pop_stack_ex",
90 "stack underflow",
91 "Operand stack underflow"),
92
93 new Case("case01", "stackMapFrame.cpp", true, "pop_stack_ex",
94 "stack pop not assignable to expected",
95 "Bad type on operand stack"),
96
97 new Case("case02", "stackMapFrame.cpp", true, "get_local",
98 "local index out-of-bounds",
99 "Local variable table overflow"),
100
101 new Case("case03", "stackMapFrame.cpp", true, "get_local",
102 "local not assignable to expected",
103 "Bad local variable type"),
104
105 new Case("case04", "stackMapFrame.cpp", true, "get_local_2",
106 "local index out-of-bounds [type2]",
107 "get long/double overflows locals"),
108
109 new Case("case05", "stackMapFrame.cpp", true, "get_local_2",
110 "local not assignabled to expected [type2]",
111 "Bad local variable type"),
112
113 /* Unreachable: Can't split long/double on stack */
114 new Case("case06", "stackMapFrame.cpp", false, "get_local_2",
115 "local second-word not assignabled to expected",
116 "Bad local variable type"),
117
118 new Case("case07", "stackMapFrame.cpp", true, "set_local",
119 "local index out-of-bounds",
120 "Local variable table overflow"),
121
122 new Case("case08", "stackMapFrame.cpp", true, "set_local_2",
123 "local index out-of-bounds [type2]",
124 "Local variable table overflow"),
125
126 new Case("case09", "stackMapFrame.hpp", true, "push_stack",
127 "stack overflow",
128 "Operand stack overflow"),
129
130 new Case("case10", "stackMapFrame.hpp", true, "push_stack_2",
131 "stack overflow [type2]",
132 "Operand stack overflow"),
133
134 new Case("case11", "stackMapFrame.hpp", true, "pop_stack",
135 "stack underflow",
136 "Operand stack underflow"),
137
138 new Case("case12", "stackMapTable.cpp", true, "StackMapTable ctor",
139 "stackmap offset beyond code size",
140 "StackMapTable error: bad offset"),
141
142 new Case("case13", "stackMapTable.cpp", true, "match_stackmap",
143 "no stackmap frame at expected location",
144 "Expecting a stackmap frame at branch target "),
145
146 new Case("case14", "stackMapTable.cpp", true, "check_jump_target",
147 "no stackmap frame at jump location or bad jump",
148 "Inconsistent stackmap frames at branch target "),
149
150 new Case("case15", "stackMapTable.cpp", true, "check_new_object",
151 "backward jump with uninit",
152 "Uninitialized object exists on backward branch "),
153
154 /* Unreachable: wide instructions verified during bytecode analysis */
155 new Case("case16", "verifier.cpp", false, "loop header",
156 "bad op in wide instruction",
157 "Bad wide instruction"),
158
159 new Case("case17", "verifier.cpp", true, "case iaload",
160 "TOS not X array",
161 "Bad type on operand stack in iaload"),
162
163 new Case("case18", "verifier.cpp", true, "case baload",
164 "TOS not X array",
165 "Bad type on operand stack in baload"),
166
167 new Case("case19", "verifier.cpp", true, "case caload",
168 "TOS not X array",
169 "Bad type on operand stack in caload"),
170
171 new Case("case20", "verifier.cpp", true, "case saload",
172 "TOS not X array",
173 "Bad type on operand stack in saload"),
174
175 new Case("case21", "verifier.cpp", true, "case laload",
176 "TOS not X array",
177 "Bad type on operand stack in laload"),
178
179 new Case("case22", "verifier.cpp", true, "case faload",
180 "TOS not X array",
181 "Bad type on operand stack in faload"),
182
183 new Case("case23", "verifier.cpp", true, "case daload",
184 "TOS not X array",
185 "Bad type on operand stack in daload"),
186
187 new Case("case24", "verifier.cpp", true, "case aaload",
188 "TOS not X array",
189 "Bad type on operand stack in aaload"),
190
191 new Case("case25", "verifier.cpp", true, "case iastore",
192 "TOS not int array",
193 "Bad type on operand stack in iastore"),
194
195 new Case("case26", "verifier.cpp", true, "case bastore",
196 "TOS not byte array",
197 "Bad type on operand stack in bastore"),
198
199 new Case("case27", "verifier.cpp", true, "case castore",
200 "TOS not char array",
201 "Bad type on operand stack in castore"),
202
203 new Case("case28", "verifier.cpp", true, "case sastore",
204 "TOS not short array",
205 "Bad type on operand stack in sastore"),
206
207 new Case("case29", "verifier.cpp", true, "case lastore",
208 "TOS not long array",
209 "Bad type on operand stack in lastore"),
210
211 new Case("case30", "verifier.cpp", true, "case fastore",
212 "TOS not float array",
213 "Bad type on operand stack in fastore"),
214
215 new Case("case31", "verifier.cpp", true, "case dastore",
216 "TOS not double array",
217 "Bad type on operand stack in dastore"),
218
219 new Case("case32", "verifier.cpp", true, "case aastore",
220 "TOS not object array",
221 "Bad type on operand stack in aastore"),
222
223 /* Unreachable: In order to hit this case, we would need a
224 * category2_1st at TOS which is not possible. */
225 new Case("case33", "verifier.cpp", false, "case pop2",
226 "TOS is category2_1st (would split)",
227 "Bad type on operand stack in pop2"),
228
229 /* Unreachable: In order to hit this case, we would need a
230 * category2_1st at stack depth 2 with category_1 on TOS which is not
231 * possible. */
232 new Case("case34", "verifier.cpp", false, "case dup_x2",
233 "TOS-1 is category2_1st (would split)",
234 "Bad type on operand stack in dup_x2"),
235
236 /* Unreachable: In order to hit this case, we would need a
237 * category2_1st at TOS which is not possible. */
238 new Case("case35", "verifier.cpp", false, "case dup2",
239 "TOS-1 is category2_1st (would split)",
240 "Bad type on operand stack in dup2"),
241
242 /* Unreachable: In order to hit this case, we would need a
243 * category2_1st at TOS which is not possible. */
244 new Case("case36", "verifier.cpp", false, "case dup2_x1",
245 "TOS-1 is category2_1st (would split)",
246 "Bad type on operand stack in dup2_x1"),
247
248 /* Unreachable: In order to hit this case, we would need a
249 * category2_1st at TOS which is not possible. */
250 new Case("case37", "verifier.cpp", false, "case dup2_x2",
251 "TOS-1 is category2_1st (would split)",
252 "Bad type on operand stack in dup2_x2"),
253
254 /* Unreachable: In order to hit this case, we would need a
255 * category2_1st at stack depth 3 with either 2 category_1 or 1
256 * category_2 on TOS, which is not possible. */
257 new Case("case38", "verifier.cpp", false, "case dup2_x2",
258 "TOS-3 is category2_1st (would split)",
259 "Bad type on operand stack in dup2_x2"),
260
261 new Case("case39", "verifier.cpp", true, "case return",
262 "return type of method is not void",
263 "Method expects a return value"),
264
265 new Case("case40", "verifier.cpp", true, "case return",
266 "return with uninitialized this ",
267 "Constructor must call super() or this() before return"),
268
269 new Case("case41", "verifier.cpp", true, "case new",
270 "cp index not a class type",
271 "Illegal new instruction"),
272
273 new Case("case42", "verifier.cpp", true, "case arraylength",
274 "TOS is not an array",
275 "Bad type on operand stack in arraylength"),
276
277 new Case("case43", "verifier.cpp", true, "case multianewarray",
278 "CP index does not refer to array type",
279 "Illegal constant pool index in multianewarray instruction"),
280
281 new Case("case44", "verifier.cpp", true, "case multianewarray",
282 "Bad dimension (<1) or does not match CP signature",
283 "Illegal dimension in multianewarray instruction: "),
284
285 new Case("case45", "verifier.cpp", true, "case default",
286 "Unrecognized bytecode",
287 "Bad instruction: "),
288
289 new Case("case46", "verifier.cpp", true, "loop end",
290 "control flow falls off method",
291 "Control flow falls through code end"),
292
293 new Case("case47", "verifier.cpp", true, "generate_code_data",
294 "illegal bytecode via RawBytecodeStream (breakpoint)",
295 "Bad instruction"),
296
297 new Case("case48", "verifier.cpp", true, "generate_code_data",
298 "illegal bytecode via RawBytecodeStream (other illegal)",
299 "Bad instruction"),
300
301 new Case("case49", "verifier.cpp", true,
302 "verify_exception_handler_table",
303 "catch_type is not throwable",
304 "Catch type is not a subclass of Throwable in " +
305 "exception handler "),
306
307 new Case("case50", "verifier.cpp", true, "verify_stackmap_table",
308 "missing a stack map frame @ target location (mid table)",
309 "Expecting a stack map frame"),
310
311 new Case("case51", "verifier.cpp", true, "verify_stackmap_table",
312 "stack map does not match?",
313 "Instruction type does not match stack map"),
314
315 new Case("case52", "verifier.cpp", true, "verify_stackmap_table",
316 "missing a stack map frame @ target location (end of table)",
317 "Expecting a stack map frame"),
318
319 new Case("case53", "verifier.cpp", true,
320 "verify_exception_handler_targets",
321 "stackmap mismatch at exception handler",
322 "Stack map does not match the one at exception handler "),
323
324 new Case("case54", "verifier.cpp", true, "verify_cp_index",
325 "constant pool index is out-of-bounds",
326 "Illegal constant pool index "),
327
328 new Case("case55", "verifier.cpp", true, "verify_cp_type",
329 "constant pool entry is not expected type",
330 "Illegal type at constant pool entry "),
331
332 new Case("case56", "verifier.cpp", true, "verify_cp_class_type",
333 "constant pool entry is not an object type",
334 "Illegal type at constant pool entry "),
335
336 /* Unreachable: verify_cp_type gates this case */
337 new Case("case57", "verifier.cpp", false, "verify_ldc",
338 "invalid constant pool index in ldc",
339 "Invalid index in ldc"),
340
341 new Case("case58", "verifier.cpp", true, "verify_switch",
342 "bad switch padding",
343 "Nonzero padding byte in lookswitch or tableswitch"),
344
345 new Case("case59", "verifier.cpp", true, "verify_switch",
346 "tableswitch low is greater than high",
347 "low must be less than or equal to high in tableswitch"),
348
349 /* Unreachable on 64-bit? Only way to get here is to overflow
350 * the 'keys' variable which can't happen on 64-bit since we're dealing
351 * with 32-bit values. Perhaps reachable on 32-bit but the
352 * triggering class would be quite large */
353 new Case("case60", "verifier.cpp", false, "verify_switch",
354 "high - low + 1 < 0 (overflow?)",
355 "too many keys in tableswitch"),
356
357 /* Would have to create a 16G classfile to trip this. Possible but
358 * not reasonable to do in a test. */
359 new Case("case61", "verifier.cpp", false, "verify_switch",
360 "lookupswitch keys < 0",
361 "number of keys in lookupswitch less than 0"),
362
363 new Case("case62", "verifier.cpp", true, "verify_switch",
364 "lookupswitch keys out-of-order",
365 "Bad lookupswitch instruction"),
366
367 /* Unreachable: Class file parser verifies Fieldref contents */
368 new Case("case63", "verifier.cpp", false, "verify_field_instructions",
369 "referenced class is not an CP object",
370 "Expecting reference to class in class "),
371
372 new Case("case64", "verifier.cpp", true, "verify_field_instructions",
373 "TOS not assignable to field type in putfield",
374 "Bad type on operand stack in putfield"),
375
376 new Case("case65", "verifier.cpp", true, "verify_field_instructions",
377 "TOS not assignable to class when accessing protected field",
378 "Bad access to protected data in getfield"),
379
380 new Case("case66", "verifier.cpp", true, "verify_invoke_init",
381 "Uninit_this is not of the current type or it's supertype",
382 "Bad <init> method call"),
383
384 /* Unreachable: Stack map parsing ensures valid type and new
385 * instructions have a valid BCI. */
386 new Case("case67", "verifier.cpp", false, "verify_invoke_init",
387 "Uninit type with bad new instruction index",
388 "Expecting new instruction"),
389
390 new Case("case68", "verifier.cpp", true, "verify_invoke_init",
391 "calling other class's <init> method",
392 "Call to wrong <init> method"),
393
394 new Case("case69", "verifier.cpp", true, "verify_invoke_init",
395 "Calling protected <init> and type unassignable from current",
396 "Bad access to protected <init> method"),
397
398 new Case("case70", "verifier.cpp", true, "verify_invoke_init",
399 "TOS is not an uninitialized (or Uninit_this) type",
400 "Bad operand type when invoking <init>"),
401
402 new Case("case71", "verifier.cpp", true, "verify_invoke_instructions",
403 "Arg count in instruction doesn't match signature",
404 "Inconsistent args count operand in invokeinterface"),
405
406 new Case("case72", "verifier.cpp", true, "verify_invoke_instructions",
407 "Non-zero pad in invokeinterface",
408 "Fourth operand byte of invokeinterface must be zero"),
409
410 new Case("case73", "verifier.cpp", true, "verify_invoke_instructions",
411 "Non-zero pad in invokedynamic",
412 "Third and fourth operand bytes of " +
413 "invokedynamic must be zero"),
414
415 new Case("case74", "verifier.cpp", true, "verify_invoke_instructions",
416 "Non-invokespecial trying to invoke a '<' method",
417 "Illegal call to internal method"),
418
419 new Case("case75", "verifier.cpp", true, "verify_invoke_instructions",
420 "invokespecial and current unassignable from referenced type",
421 "Bad invokespecial instruction: current class isn't " +
422 "assignable to reference class."),
423
424 new Case("case76", "verifier.cpp", true, "verify_invoke_instructions",
425 "TOS not assignable to current when calling protected method",
426 "Bad access to protected data in invokevirtual"),
427
428 /* Unreachable: class file parser enforces void signature */
429 new Case("case77", "verifier.cpp", false, "verify_invoke_instructions",
430 "<init> method is not void return",
431 "Return type must be void in <init> method"),
432
433 new Case("case78", "verifier.cpp", true, "get_newarray_type",
434 "newarray type invalid",
435 "Illegal newarray instruction"),
436
437 new Case("case79", "verifier.cpp", true, "verify_return_value",
438 "void return from method which has a return value",
439 "Method expects a return value"),
440
441 new Case("case80", "verifier.cpp", true, "verify_return_value",
442 "TOS type does not match signature",
443 "Bad return type"),
444
445 new Case("case81", "verifier.cpp", true, "verify_stackmap_table",
446 "stack map does not match (flags)",
447 "Instruction type does not match stack map")
448 };
449 }
450
451 public class Test7116786 {
452 public static void main(String argv[]) throws Exception {
453 for (Case c : VerifyErrorCases.cases) {
454 System.out.println("******** " + c.getCaseName() + " ********");
455 if (c.isTestable()) {
456 try {
457 ClassLoader cl = Test7116786.class.getClassLoader();
458 Class<?> cls = Class.forName(c.getCaseName(), true, cl);
459 throw new RuntimeException(
460 "++ FAIL: No verify error encountered");
461 } catch (VerifyError ve) {
462 String message = c.getMessage();
463 String veMessage = ve.getMessage();
464 System.out.print(veMessage);
465 if (!veMessage.startsWith(message)) {
466 // We're not seeing the message we expect. Could be
467 // that we've gotten the wrong VerifyError case, or
468 // maybe the message changed.
469 System.out.println("++ FAIL? " +
470 "Message does not match what was expected: " +
471 message);
472 continue;
473 }
474 if (!veMessage.contains("Exception Details:") &&
475 !veMessage.contains("Reason:")) {
476 System.out.println("++ FAIL: No details found");
477 throw new RuntimeException("FAIL: No details found");
478 }
479 System.out.println("++ PASS");
480 }
481 } else {
482 System.out.println("++ SKIPPED");
483 }
484 }
485 }
486 }