1 /*
2 * Copyright (c) 1997, 2023, 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 #include "precompiled.hpp"
26 #include "cds/cdsConfig.hpp"
27 #include "classfile/javaClasses.inline.hpp"
28 #include "classfile/moduleEntry.hpp"
29 #include "classfile/packageEntry.hpp"
30 #include "classfile/stringTable.hpp"
31 #include "classfile/verifier.hpp"
32 #include "classfile/vmClasses.hpp"
33 #include "classfile/vmSymbols.hpp"
34 #include "interpreter/linkResolver.hpp"
35 #include "jvm.h"
36 #include "logging/log.hpp"
37 #include "memory/oopFactory.hpp"
38 #include "memory/resourceArea.hpp"
39 #include "memory/universe.hpp"
40 #include "oops/inlineKlass.inline.hpp"
41 #include "oops/instanceKlass.inline.hpp"
42 #include "oops/klass.inline.hpp"
43 #include "oops/objArrayKlass.hpp"
44 #include "oops/objArrayOop.inline.hpp"
45 #include "oops/oop.inline.hpp"
46 #include "oops/typeArrayOop.inline.hpp"
47 #include "prims/jvmtiExport.hpp"
48 #include "runtime/fieldDescriptor.inline.hpp"
49 #include "runtime/handles.inline.hpp"
50 #include "runtime/javaCalls.hpp"
51 #include "runtime/javaThread.hpp"
52 #include "runtime/reflection.hpp"
53 #include "runtime/signature.hpp"
54 #include "runtime/vframe.inline.hpp"
55 #include "utilities/formatBuffer.hpp"
56 #include "utilities/globalDefinitions.hpp"
57
58 static void trace_class_resolution(oop mirror) {
59 if (mirror == nullptr || java_lang_Class::is_primitive(mirror)) {
60 return;
61 }
62 Klass* to_class = java_lang_Class::as_Klass(mirror);
63 ResourceMark rm;
64 int line_number = -1;
65 const char * source_file = nullptr;
66 Klass* caller = nullptr;
67 JavaThread* jthread = JavaThread::current();
68 if (jthread->has_last_Java_frame()) {
69 vframeStream vfst(jthread);
70 // skip over any frames belonging to java.lang.Class
71 while (!vfst.at_end() &&
72 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class()) {
73 vfst.next();
74 }
75 if (!vfst.at_end()) {
76 // this frame is a likely suspect
77 caller = vfst.method()->method_holder();
78 line_number = vfst.method()->line_number_from_bci(vfst.bci());
79 Symbol* s = vfst.method()->method_holder()->source_file_name();
80 if (s != nullptr) {
81 source_file = s->as_C_string();
82 }
83 }
84 }
85 if (caller != nullptr) {
86 const char * from = caller->external_name();
87 const char * to = to_class->external_name();
88 // print in a single call to reduce interleaving between threads
89 if (source_file != nullptr) {
90 log_debug(class, resolve)("%s %s %s:%d (reflection)", from, to, source_file, line_number);
91 } else {
92 log_debug(class, resolve)("%s %s (reflection)", from, to);
93 }
94 }
95 }
96
97
98 oop Reflection::box(jvalue* value, BasicType type, TRAPS) {
99 if (type == T_VOID) {
100 return nullptr;
101 }
102 if (is_reference_type(type)) {
103 // regular objects are not boxed
104 return cast_to_oop(value->l);
105 }
106 oop result = java_lang_boxing_object::create(type, value, CHECK_NULL);
107 if (result == nullptr) {
108 THROW_(vmSymbols::java_lang_IllegalArgumentException(), result);
109 }
110 return result;
111 }
112
113
114 BasicType Reflection::unbox_for_primitive(oop box, jvalue* value, TRAPS) {
115 if (box == nullptr) {
116 THROW_(vmSymbols::java_lang_IllegalArgumentException(), T_ILLEGAL);
117 }
118 return java_lang_boxing_object::get_value(box, value);
119 }
120
121 BasicType Reflection::unbox_for_regular_object(oop box, jvalue* value) {
122 // Note: box is really the unboxed oop. It might even be a Short, etc.!
123 value->l = cast_from_oop<jobject>(box);
124 return T_OBJECT;
125 }
126
127
128 void Reflection::widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS) {
129 assert(wide_type != current_type, "widen should not be called with identical types");
130 switch (wide_type) {
131 case T_BOOLEAN:
132 case T_BYTE:
133 case T_CHAR:
134 break; // fail
135 case T_SHORT:
136 switch (current_type) {
137 case T_BYTE:
138 value->s = (jshort) value->b;
139 return;
140 default:
141 break;
142 }
143 break; // fail
144 case T_INT:
145 switch (current_type) {
146 case T_BYTE:
147 value->i = (jint) value->b;
148 return;
149 case T_CHAR:
150 value->i = (jint) value->c;
151 return;
152 case T_SHORT:
153 value->i = (jint) value->s;
154 return;
155 default:
156 break;
157 }
158 break; // fail
159 case T_LONG:
160 switch (current_type) {
161 case T_BYTE:
162 value->j = (jlong) value->b;
163 return;
164 case T_CHAR:
165 value->j = (jlong) value->c;
166 return;
167 case T_SHORT:
168 value->j = (jlong) value->s;
169 return;
170 case T_INT:
171 value->j = (jlong) value->i;
172 return;
173 default:
174 break;
175 }
176 break; // fail
177 case T_FLOAT:
178 switch (current_type) {
179 case T_BYTE:
180 value->f = (jfloat) value->b;
181 return;
182 case T_CHAR:
183 value->f = (jfloat) value->c;
184 return;
185 case T_SHORT:
186 value->f = (jfloat) value->s;
187 return;
188 case T_INT:
189 value->f = (jfloat) value->i;
190 return;
191 case T_LONG:
192 value->f = (jfloat) value->j;
193 return;
194 default:
195 break;
196 }
197 break; // fail
198 case T_DOUBLE:
199 switch (current_type) {
200 case T_BYTE:
201 value->d = (jdouble) value->b;
202 return;
203 case T_CHAR:
204 value->d = (jdouble) value->c;
205 return;
206 case T_SHORT:
207 value->d = (jdouble) value->s;
208 return;
209 case T_INT:
210 value->d = (jdouble) value->i;
211 return;
212 case T_FLOAT:
213 value->d = (jdouble) value->f;
214 return;
215 case T_LONG:
216 value->d = (jdouble) value->j;
217 return;
218 default:
219 break;
220 }
221 break; // fail
222 default:
223 break; // fail
224 }
225 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
226 }
227
228
229 BasicType Reflection::array_get(jvalue* value, arrayOop a, int index, TRAPS) {
230 if (!a->is_within_bounds(index)) {
231 THROW_(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), T_ILLEGAL);
232 }
233 if (a->is_objArray()) {
234 value->l = cast_from_oop<jobject>(objArrayOop(a)->obj_at(index));
235 return T_OBJECT;
236 } else {
237 assert(a->is_typeArray(), "just checking");
238 BasicType type = TypeArrayKlass::cast(a->klass())->element_type();
239 switch (type) {
240 case T_BOOLEAN:
241 value->z = typeArrayOop(a)->bool_at(index);
242 break;
243 case T_CHAR:
244 value->c = typeArrayOop(a)->char_at(index);
245 break;
246 case T_FLOAT:
247 value->f = typeArrayOop(a)->float_at(index);
248 break;
249 case T_DOUBLE:
250 value->d = typeArrayOop(a)->double_at(index);
251 break;
252 case T_BYTE:
253 value->b = typeArrayOop(a)->byte_at(index);
254 break;
255 case T_SHORT:
256 value->s = typeArrayOop(a)->short_at(index);
257 break;
258 case T_INT:
259 value->i = typeArrayOop(a)->int_at(index);
260 break;
261 case T_LONG:
262 value->j = typeArrayOop(a)->long_at(index);
263 break;
264 default:
265 return T_ILLEGAL;
266 }
267 return type;
268 }
269 }
270
271
272 void Reflection::array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS) {
273 if (!a->is_within_bounds(index)) {
274 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
275 }
276
277 if (a->is_objArray()) {
278 if (value_type == T_OBJECT) {
279 oop obj = cast_to_oop(value->l);
280 if (a->is_null_free_array() && obj == nullptr) {
281 THROW_MSG(vmSymbols::java_lang_NullPointerException(), "null-restricted array");
282 }
283
284 if (obj != nullptr) {
285 Klass* element_klass = ObjArrayKlass::cast(a->klass())->element_klass();
286 if (!obj->is_a(element_klass)) {
287 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "array element type mismatch");
288 }
289 }
290 objArrayOop(a)->obj_at_put(index, obj);
291 }
292 } else {
293 assert(a->is_typeArray(), "just checking");
294 BasicType array_type = TypeArrayKlass::cast(a->klass())->element_type();
295 if (array_type != value_type) {
296 // The widen operation can potentially throw an exception, but cannot block,
297 // so typeArrayOop a is safe if the call succeeds.
298 widen(value, value_type, array_type, CHECK);
299 }
300 switch (array_type) {
301 case T_BOOLEAN:
302 typeArrayOop(a)->bool_at_put(index, value->z);
303 break;
304 case T_CHAR:
305 typeArrayOop(a)->char_at_put(index, value->c);
306 break;
307 case T_FLOAT:
308 typeArrayOop(a)->float_at_put(index, value->f);
309 break;
310 case T_DOUBLE:
311 typeArrayOop(a)->double_at_put(index, value->d);
312 break;
313 case T_BYTE:
314 typeArrayOop(a)->byte_at_put(index, value->b);
315 break;
316 case T_SHORT:
317 typeArrayOop(a)->short_at_put(index, value->s);
318 break;
319 case T_INT:
320 typeArrayOop(a)->int_at_put(index, value->i);
321 break;
322 case T_LONG:
323 typeArrayOop(a)->long_at_put(index, value->j);
324 break;
325 default:
326 THROW(vmSymbols::java_lang_IllegalArgumentException());
327 }
328 }
329 }
330
331 static Klass* basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS) {
332 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking");
333 BasicType type = java_lang_Class::primitive_type(basic_type_mirror);
334 if (type == T_VOID) {
335 THROW_0(vmSymbols::java_lang_IllegalArgumentException());
336 }
337 else {
338 return Universe::typeArrayKlassObj(type);
339 }
340 }
341
342 arrayOop Reflection::reflect_new_array(oop element_mirror, jint length, TRAPS) {
343 if (element_mirror == nullptr) {
344 THROW_0(vmSymbols::java_lang_NullPointerException());
345 }
346 if (length < 0) {
347 THROW_MSG_0(vmSymbols::java_lang_NegativeArraySizeException(), err_msg("%d", length));
348 }
349 if (java_lang_Class::is_primitive(element_mirror)) {
350 Klass* tak = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL);
351 return TypeArrayKlass::cast(tak)->allocate(length, THREAD);
352 } else {
353 Klass* k = java_lang_Class::as_Klass(element_mirror);
354 if (k->is_array_klass() && ArrayKlass::cast(k)->dimension() >= MAX_DIM) {
355 THROW_0(vmSymbols::java_lang_IllegalArgumentException());
356 }
357 return oopFactory::new_objArray(k, length, THREAD);
358 }
359 }
360
361
362 arrayOop Reflection::reflect_new_multi_array(oop element_mirror, typeArrayOop dim_array, TRAPS) {
363 assert(dim_array->is_typeArray(), "just checking");
364 assert(TypeArrayKlass::cast(dim_array->klass())->element_type() == T_INT, "just checking");
365
366 if (element_mirror == nullptr) {
367 THROW_0(vmSymbols::java_lang_NullPointerException());
368 }
369
370 int len = dim_array->length();
371 if (len <= 0 || len > MAX_DIM) {
372 THROW_0(vmSymbols::java_lang_IllegalArgumentException());
373 }
374
375 jint dimensions[MAX_DIM]; // C array copy of intArrayOop
376 for (int i = 0; i < len; i++) {
377 int d = dim_array->int_at(i);
378 if (d < 0) {
379 THROW_MSG_0(vmSymbols::java_lang_NegativeArraySizeException(), err_msg("%d", d));
380 }
381 dimensions[i] = d;
382 }
383
384 Klass* klass;
385 int dim = len;
386 if (java_lang_Class::is_primitive(element_mirror)) {
387 klass = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL);
388 } else {
389 klass = java_lang_Class::as_Klass(element_mirror);
390 if (klass->is_array_klass()) {
391 int k_dim = ArrayKlass::cast(klass)->dimension();
392 if (k_dim + len > MAX_DIM) {
393 THROW_0(vmSymbols::java_lang_IllegalArgumentException());
394 }
395 dim += k_dim;
396 }
397 }
398 klass = klass->array_klass(dim, CHECK_NULL);
399 oop obj = ArrayKlass::cast(klass)->multi_allocate(len, dimensions, CHECK_NULL);
400 assert(obj->is_array(), "just checking");
401 return arrayOop(obj);
402 }
403
404
405 static bool can_relax_access_check_for(const Klass* accessor,
406 const Klass* accessee,
407 bool classloader_only) {
408
409 const InstanceKlass* accessor_ik = InstanceKlass::cast(accessor);
410 const InstanceKlass* accessee_ik = InstanceKlass::cast(accessee);
411
412 if (RelaxAccessControlCheck &&
413 accessor_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION &&
414 accessee_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION) {
415 return classloader_only &&
416 Verifier::relax_access_for(accessor_ik->class_loader()) &&
417 accessor_ik->protection_domain() == accessee_ik->protection_domain() &&
418 accessor_ik->class_loader() == accessee_ik->class_loader();
419 }
420
421 return false;
422 }
423
424 /*
425 Type Accessibility check for public types: Callee Type T is accessible to Caller Type S if:
426
427 Callee T in Callee T in package PT,
428 unnamed module runtime module MT
429 ------------------------------------------------------------------------------------------------
430
431 Caller S in package If MS is loose: YES If same classloader/package (PS == PT): YES
432 PS, runtime module MS If MS can read T's If same runtime module: (MS == MT): YES
433 unnamed module: YES
434 Else if (MS can read MT (establish readability) &&
435 ((MT exports PT to MS or to all modules) ||
436 (MT is open))): YES
437
438 ------------------------------------------------------------------------------------------------
439 Caller S in unnamed YES Readability exists because unnamed module
440 module UM "reads" all modules
441 if (MT exports PT to UM or to all modules): YES
442
443 ------------------------------------------------------------------------------------------------
444
445 Note: a loose module is a module that can read all current and future unnamed modules.
446 */
447 Reflection::VerifyClassAccessResults Reflection::verify_class_access(
448 const Klass* current_class, const InstanceKlass* new_class, bool classloader_only) {
449
450 // Verify that current_class can access new_class. If the classloader_only
451 // flag is set, we automatically allow any accesses in which current_class
452 // doesn't have a classloader.
453 if ((current_class == nullptr) ||
454 (current_class == new_class) ||
455 is_same_class_package(current_class, new_class)) {
456 return ACCESS_OK;
457 }
458 // Allow all accesses from jdk/internal/reflect/SerializationConstructorAccessorImpl subclasses to
459 // succeed trivially.
460 if (vmClasses::reflect_SerializationConstructorAccessorImpl_klass_is_loaded() &&
461 current_class->is_subclass_of(vmClasses::reflect_SerializationConstructorAccessorImpl_klass())) {
462 return ACCESS_OK;
463 }
464
465 // module boundaries
466 if (new_class->is_public()) {
467 // Ignore modules for -Xshare:dump because we do not have any package
468 // or module information for modules other than java.base.
469 if (CDSConfig::is_dumping_static_archive()) {
470 return ACCESS_OK;
471 }
472
473 // Find the module entry for current_class, the accessor
474 ModuleEntry* module_from = current_class->module();
475 // Find the module entry for new_class, the accessee
476 ModuleEntry* module_to = new_class->module();
477
478 // both in same (possibly unnamed) module
479 if (module_from == module_to) {
480 return ACCESS_OK;
481 }
482
483 // Acceptable access to a type in an unnamed module. Note that since
484 // unnamed modules can read all unnamed modules, this also handles the
485 // case where module_from is also unnamed but in a different class loader.
486 if (!module_to->is_named() &&
487 (module_from->can_read_all_unnamed() || module_from->can_read(module_to))) {
488 return ACCESS_OK;
489 }
490
491 // Establish readability, check if module_from is allowed to read module_to.
492 if (!module_from->can_read(module_to)) {
493 return MODULE_NOT_READABLE;
494 }
495
496 // Access is allowed if module_to is open, i.e. all its packages are unqualifiedly exported
497 if (module_to->is_open()) {
498 return ACCESS_OK;
499 }
500
501 PackageEntry* package_to = new_class->package();
502 assert(package_to != nullptr, "can not obtain new_class' package");
503
504 {
505 MutexLocker m1(Module_lock);
506
507 // Once readability is established, if module_to exports T unqualifiedly,
508 // (to all modules), than whether module_from is in the unnamed module
509 // or not does not matter, access is allowed.
510 if (package_to->is_unqual_exported()) {
511 return ACCESS_OK;
512 }
513
514 // Access is allowed if both 1 & 2 hold:
515 // 1. Readability, module_from can read module_to (established above).
516 // 2. Either module_to exports T to module_from qualifiedly.
517 // or
518 // module_to exports T to all unnamed modules and module_from is unnamed.
519 // or
520 // module_to exports T unqualifiedly to all modules (checked above).
521 if (!package_to->is_qexported_to(module_from)) {
522 return TYPE_NOT_EXPORTED;
523 }
524 }
525 return ACCESS_OK;
526 }
527
528 if (can_relax_access_check_for(current_class, new_class, classloader_only)) {
529 return ACCESS_OK;
530 }
531 return OTHER_PROBLEM;
532 }
533
534 // Return an error message specific to the specified Klass*'s and result.
535 // This function must be called from within a block containing a ResourceMark.
536 char* Reflection::verify_class_access_msg(const Klass* current_class,
537 const InstanceKlass* new_class,
538 const VerifyClassAccessResults result) {
539 assert(result != ACCESS_OK, "must be failure result");
540 char * msg = nullptr;
541 if (result != OTHER_PROBLEM && new_class != nullptr && current_class != nullptr) {
542 // Find the module entry for current_class, the accessor
543 ModuleEntry* module_from = current_class->module();
544 const char * module_from_name = module_from->is_named() ? module_from->name()->as_C_string() : UNNAMED_MODULE;
545 const char * current_class_name = current_class->external_name();
546
547 // Find the module entry for new_class, the accessee
548 ModuleEntry* module_to = nullptr;
549 module_to = new_class->module();
550 const char * module_to_name = module_to->is_named() ? module_to->name()->as_C_string() : UNNAMED_MODULE;
551 const char * new_class_name = new_class->external_name();
552
553 if (result == MODULE_NOT_READABLE) {
554 assert(module_from->is_named(), "Unnamed modules can read all modules");
555 if (module_to->is_named()) {
556 size_t len = 100 + strlen(current_class_name) + 2*strlen(module_from_name) +
557 strlen(new_class_name) + 2*strlen(module_to_name);
558 msg = NEW_RESOURCE_ARRAY(char, len);
559 jio_snprintf(msg, len - 1,
560 "class %s (in module %s) cannot access class %s (in module %s) because module %s does not read module %s",
561 current_class_name, module_from_name, new_class_name,
562 module_to_name, module_from_name, module_to_name);
563 } else {
564 oop jlm = module_to->module();
565 assert(jlm != nullptr, "Null jlm in module_to ModuleEntry");
566 intptr_t identity_hash = jlm->identity_hash();
567 size_t len = 160 + strlen(current_class_name) + 2*strlen(module_from_name) +
568 strlen(new_class_name) + 2*sizeof(uintx);
569 msg = NEW_RESOURCE_ARRAY(char, len);
570 jio_snprintf(msg, len - 1,
571 "class %s (in module %s) cannot access class %s (in unnamed module @" SIZE_FORMAT_X ") because module %s does not read unnamed module @" SIZE_FORMAT_X,
572 current_class_name, module_from_name, new_class_name, uintx(identity_hash),
573 module_from_name, uintx(identity_hash));
574 }
575
576 } else if (result == TYPE_NOT_EXPORTED) {
577 assert(new_class->package() != nullptr,
578 "Unnamed packages are always exported");
579 const char * package_name =
580 new_class->package()->name()->as_klass_external_name();
581 assert(module_to->is_named(), "Unnamed modules export all packages");
582 if (module_from->is_named()) {
583 size_t len = 118 + strlen(current_class_name) + 2*strlen(module_from_name) +
584 strlen(new_class_name) + 2*strlen(module_to_name) + strlen(package_name);
585 msg = NEW_RESOURCE_ARRAY(char, len);
586 jio_snprintf(msg, len - 1,
587 "class %s (in module %s) cannot access class %s (in module %s) because module %s does not export %s to module %s",
588 current_class_name, module_from_name, new_class_name,
589 module_to_name, module_to_name, package_name, module_from_name);
590 } else {
591 oop jlm = module_from->module();
592 assert(jlm != nullptr, "Null jlm in module_from ModuleEntry");
593 intptr_t identity_hash = jlm->identity_hash();
594 size_t len = 170 + strlen(current_class_name) + strlen(new_class_name) +
595 2*strlen(module_to_name) + strlen(package_name) + 2*sizeof(uintx);
596 msg = NEW_RESOURCE_ARRAY(char, len);
597 jio_snprintf(msg, len - 1,
598 "class %s (in unnamed module @" SIZE_FORMAT_X ") cannot access class %s (in module %s) because module %s does not export %s to unnamed module @" SIZE_FORMAT_X,
599 current_class_name, uintx(identity_hash), new_class_name, module_to_name,
600 module_to_name, package_name, uintx(identity_hash));
601 }
602 } else {
603 ShouldNotReachHere();
604 }
605 } // result != OTHER_PROBLEM...
606 return msg;
607 }
608
609 bool Reflection::verify_member_access(const Klass* current_class,
610 const Klass* resolved_class,
611 const Klass* member_class,
612 AccessFlags access,
613 bool classloader_only,
614 bool protected_restriction,
615 TRAPS) {
616 // Verify that current_class can access a member of member_class, where that
617 // field's access bits are "access". We assume that we've already verified
618 // that current_class can access member_class.
619 //
620 // If the classloader_only flag is set, we automatically allow any accesses
621 // in which current_class doesn't have a classloader.
622 //
623 // "resolved_class" is the runtime type of "member_class". Sometimes we don't
624 // need this distinction (e.g. if all we have is the runtime type, or during
625 // class file parsing when we only care about the static type); in that case
626 // callers should ensure that resolved_class == member_class.
627 //
628 if ((current_class == nullptr) ||
629 (current_class == member_class) ||
630 access.is_public()) {
631 return true;
632 }
633
634 if (current_class == member_class) {
635 return true;
636 }
637
638 if (access.is_protected()) {
639 if (!protected_restriction) {
640 // See if current_class (or outermost host class) is a subclass of member_class
641 // An interface may not access protected members of j.l.Object
642 if (!current_class->is_interface() && current_class->is_subclass_of(member_class)) {
643 if (access.is_static() || // static fields are ok, see 6622385
644 current_class == resolved_class ||
645 member_class == resolved_class ||
646 current_class->is_subclass_of(resolved_class) ||
647 resolved_class->is_subclass_of(current_class)) {
648 return true;
649 }
650 }
651 }
652 }
653
654 // package access
655 if (!access.is_private() && is_same_class_package(current_class, member_class)) {
656 return true;
657 }
658
659 // private access between different classes needs a nestmate check.
660 if (access.is_private()) {
661 if (current_class->is_instance_klass() && member_class->is_instance_klass() ) {
662 InstanceKlass* cur_ik = const_cast<InstanceKlass*>(InstanceKlass::cast(current_class));
663 InstanceKlass* field_ik = const_cast<InstanceKlass*>(InstanceKlass::cast(member_class));
664 // Nestmate access checks may require resolution and validation of the nest-host.
665 // It is up to the caller to check for pending exceptions and handle appropriately.
666 bool access = cur_ik->has_nestmate_access_to(field_ik, CHECK_false);
667 if (access) {
668 guarantee(resolved_class->is_subclass_of(member_class), "must be!");
669 return true;
670 }
671 }
672 }
673
674 // Allow all accesses from jdk/internal/reflect/SerializationConstructorAccessorImpl subclasses to
675 // succeed trivially.
676 if (current_class->is_subclass_of(vmClasses::reflect_SerializationConstructorAccessorImpl_klass())) {
677 return true;
678 }
679
680 // Check for special relaxations
681 return can_relax_access_check_for(current_class, member_class, classloader_only);
682 }
683
684 bool Reflection::is_same_class_package(const Klass* class1, const Klass* class2) {
685 return InstanceKlass::cast(class1)->is_same_class_package(class2);
686 }
687
688 // Checks that the 'outer' klass has declared 'inner' as being an inner klass. If not,
689 // throw an incompatible class change exception
690 // If inner_is_member, require the inner to be a member of the outer.
691 // If !inner_is_member, require the inner to be hidden (non-member).
692 // Caller is responsible for figuring out in advance which case must be true.
693 void Reflection::check_for_inner_class(const InstanceKlass* outer, const InstanceKlass* inner,
694 bool inner_is_member, TRAPS) {
695 InnerClassesIterator iter(outer);
696 constantPoolHandle cp (THREAD, outer->constants());
697 for (; !iter.done(); iter.next()) {
698 int ioff = iter.inner_class_info_index();
699 int ooff = iter.outer_class_info_index();
700
701 if (inner_is_member && ioff != 0 && ooff != 0) {
702 if (cp->klass_name_at_matches(outer, ooff) &&
703 cp->klass_name_at_matches(inner, ioff)) {
704 Klass* o = cp->klass_at(ooff, CHECK);
705 if (o == outer) {
706 Klass* i = cp->klass_at(ioff, CHECK);
707 if (i == inner) {
708 return;
709 }
710 }
711 }
712 }
713
714 if (!inner_is_member && ioff != 0 && ooff == 0 &&
715 cp->klass_name_at_matches(inner, ioff)) {
716 Klass* i = cp->klass_at(ioff, CHECK);
717 if (i == inner) {
718 return;
719 }
720 }
721 }
722
723 // 'inner' not declared as an inner klass in outer
724 ResourceMark rm(THREAD);
725 Exceptions::fthrow(
726 THREAD_AND_LOCATION,
727 vmSymbols::java_lang_IncompatibleClassChangeError(),
728 "%s and %s disagree on InnerClasses attribute",
729 outer->external_name(),
730 inner->external_name()
731 );
732 }
733
734 static objArrayHandle get_parameter_types(const methodHandle& method,
735 int parameter_count,
736 oop* return_type,
737 TRAPS) {
738 objArrayOop m;
739 if (parameter_count == 0) {
740 // Avoid allocating an array for the empty case
741 // Still need to parse the signature for the return type below
742 m = Universe::the_empty_class_array();
743 } else {
744 // Allocate array holding parameter types (java.lang.Class instances)
745 m = oopFactory::new_objArray(vmClasses::Class_klass(), parameter_count, CHECK_(objArrayHandle()));
746 }
747 objArrayHandle mirrors(THREAD, m);
748 int index = 0;
749 // Collect parameter types
750 ResourceMark rm(THREAD);
751 for (ResolvingSignatureStream ss(method()); !ss.is_done(); ss.next()) {
752 oop mirror = ss.as_java_mirror(SignatureStream::NCDFError, CHECK_(objArrayHandle()));
753 if (log_is_enabled(Debug, class, resolve)) {
754 trace_class_resolution(mirror);
755 }
756 if (!ss.at_return_type()) {
757 mirrors->obj_at_put(index++, mirror);
758 } else if (return_type != nullptr) {
759 // Collect return type as well
760 assert(ss.at_return_type(), "return type should be present");
761 *return_type = mirror;
762 }
763 }
764 assert(index == parameter_count, "invalid parameter count");
765 return mirrors;
766 }
767
768 static objArrayHandle get_exception_types(const methodHandle& method, TRAPS) {
769 return method->resolved_checked_exceptions(THREAD);
770 }
771
772 static Handle new_type(Symbol* signature, Klass* k, TRAPS) {
773 ResolvingSignatureStream ss(signature, k, false);
774 oop nt = ss.as_java_mirror(SignatureStream::NCDFError, CHECK_NH);
775 return Handle(THREAD, nt);
776 }
777
778 oop Reflection::new_method(const methodHandle& method, bool for_constant_pool_access, TRAPS) {
779 // Allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods.
780 assert(!method()->name()->starts_with('<') || for_constant_pool_access,
781 "should call new_constructor instead");
782 InstanceKlass* holder = method->method_holder();
783 int slot = method->method_idnum();
784
785 Symbol* signature = method->signature();
786 int parameter_count = ArgumentCount(signature).size();
787 oop return_type_oop = nullptr;
788 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, &return_type_oop, CHECK_NULL);
789 if (parameter_types.is_null() || return_type_oop == nullptr) return nullptr;
790
791 Handle return_type(THREAD, return_type_oop);
792
793 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL);
794 assert(!exception_types.is_null(), "cannot return null");
795
796 Symbol* method_name = method->name();
797 oop name_oop = StringTable::intern(method_name, CHECK_NULL);
798 Handle name = Handle(THREAD, name_oop);
799 if (name == nullptr) return nullptr;
800
801 const int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
802
803 Handle mh = java_lang_reflect_Method::create(CHECK_NULL);
804
805 java_lang_reflect_Method::set_clazz(mh(), holder->java_mirror());
806 java_lang_reflect_Method::set_slot(mh(), slot);
807 java_lang_reflect_Method::set_name(mh(), name());
808 java_lang_reflect_Method::set_return_type(mh(), return_type());
809 java_lang_reflect_Method::set_parameter_types(mh(), parameter_types());
810 java_lang_reflect_Method::set_exception_types(mh(), exception_types());
811 java_lang_reflect_Method::set_modifiers(mh(), modifiers);
812 java_lang_reflect_Method::set_override(mh(), false);
813 if (method->generic_signature() != nullptr) {
814 Symbol* gs = method->generic_signature();
815 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
816 java_lang_reflect_Method::set_signature(mh(), sig());
817 }
818 typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL);
819 java_lang_reflect_Method::set_annotations(mh(), an_oop);
820 an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL);
821 java_lang_reflect_Method::set_parameter_annotations(mh(), an_oop);
822 an_oop = Annotations::make_java_array(method->annotation_default(), CHECK_NULL);
823 java_lang_reflect_Method::set_annotation_default(mh(), an_oop);
824 return mh();
825 }
826
827
828 oop Reflection::new_constructor(const methodHandle& method, TRAPS) {
829 assert(method()->is_object_constructor(),
830 "should call new_method instead");
831
832 InstanceKlass* holder = method->method_holder();
833 int slot = method->method_idnum();
834
835 Symbol* signature = method->signature();
836 int parameter_count = ArgumentCount(signature).size();
837 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, nullptr, CHECK_NULL);
838 if (parameter_types.is_null()) return nullptr;
839
840 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL);
841 assert(!exception_types.is_null(), "cannot return null");
842
843 const int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
844
845 Handle ch = java_lang_reflect_Constructor::create(CHECK_NULL);
846
847 java_lang_reflect_Constructor::set_clazz(ch(), holder->java_mirror());
848 java_lang_reflect_Constructor::set_slot(ch(), slot);
849 java_lang_reflect_Constructor::set_parameter_types(ch(), parameter_types());
850 java_lang_reflect_Constructor::set_exception_types(ch(), exception_types());
851 java_lang_reflect_Constructor::set_modifiers(ch(), modifiers);
852 java_lang_reflect_Constructor::set_override(ch(), false);
853 if (method->generic_signature() != nullptr) {
854 Symbol* gs = method->generic_signature();
855 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
856 java_lang_reflect_Constructor::set_signature(ch(), sig());
857 }
858 typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL);
859 java_lang_reflect_Constructor::set_annotations(ch(), an_oop);
860 an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL);
861 java_lang_reflect_Constructor::set_parameter_annotations(ch(), an_oop);
862 return ch();
863 }
864
865
866 oop Reflection::new_field(fieldDescriptor* fd, TRAPS) {
867 Symbol* field_name = fd->name();
868 oop name_oop = StringTable::intern(field_name, CHECK_NULL);
869 Handle name = Handle(THREAD, name_oop);
870 Symbol* signature = fd->signature();
871 InstanceKlass* holder = fd->field_holder();
872 Handle type = new_type(signature, holder, CHECK_NULL);
873 Handle rh = java_lang_reflect_Field::create(CHECK_NULL);
874
875 java_lang_reflect_Field::set_clazz(rh(), fd->field_holder()->java_mirror());
876 java_lang_reflect_Field::set_slot(rh(), fd->index());
877 java_lang_reflect_Field::set_name(rh(), name());
878 java_lang_reflect_Field::set_type(rh(), type());
879
880 int flags = 0;
881 if (fd->is_trusted_final()) {
882 flags |= TRUSTED_FINAL;
883 }
884 if (fd->is_null_free_inline_type()) {
885 flags |= NULL_RESTRICTED;
886 }
887 java_lang_reflect_Field::set_flags(rh(), flags);
888
889 // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here.
890 int modifiers = fd->access_flags().as_int();
891 java_lang_reflect_Field::set_modifiers(rh(), modifiers);
892 java_lang_reflect_Field::set_override(rh(), false);
893 if (fd->has_generic_signature()) {
894 Symbol* gs = fd->generic_signature();
895 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL);
896 java_lang_reflect_Field::set_signature(rh(), sig());
897 }
898 typeArrayOop an_oop = Annotations::make_java_array(fd->annotations(), CHECK_NULL);
899 java_lang_reflect_Field::set_annotations(rh(), an_oop);
900 return rh();
901 }
902
903 oop Reflection::new_parameter(Handle method, int index, Symbol* sym,
904 int flags, TRAPS) {
905
906 Handle rh = java_lang_reflect_Parameter::create(CHECK_NULL);
907
908 if(nullptr != sym) {
909 Handle name = java_lang_String::create_from_symbol(sym, CHECK_NULL);
910 java_lang_reflect_Parameter::set_name(rh(), name());
911 } else {
912 java_lang_reflect_Parameter::set_name(rh(), nullptr);
913 }
914
915 java_lang_reflect_Parameter::set_modifiers(rh(), flags);
916 java_lang_reflect_Parameter::set_executable(rh(), method());
917 java_lang_reflect_Parameter::set_index(rh(), index);
918 return rh();
919 }
920
921
922 static methodHandle resolve_interface_call(InstanceKlass* klass,
923 const methodHandle& method,
924 Klass* recv_klass,
925 Handle receiver,
926 TRAPS) {
927
928 assert(!method.is_null() , "method should not be null");
929
930 CallInfo info;
931 Symbol* signature = method->signature();
932 Symbol* name = method->name();
933 LinkResolver::resolve_interface_call(info, receiver, recv_klass,
934 LinkInfo(klass, name, signature),
935 true,
936 CHECK_(methodHandle()));
937 return methodHandle(THREAD, info.selected_method());
938 }
939
940 // Conversion
941 static BasicType basic_type_mirror_to_basic_type(oop basic_type_mirror) {
942 assert(java_lang_Class::is_primitive(basic_type_mirror),
943 "just checking");
944 return java_lang_Class::primitive_type(basic_type_mirror);
945 }
946
947 // Narrowing of basic types. Used to create correct jvalues for
948 // boolean, byte, char and short return return values from interpreter
949 // which are returned as ints. Throws IllegalArgumentException.
950 static void narrow(jvalue* value, BasicType narrow_type, TRAPS) {
951 switch (narrow_type) {
952 case T_BOOLEAN:
953 value->z = (jboolean) (value->i & 1);
954 return;
955 case T_BYTE:
956 value->b = (jbyte)value->i;
957 return;
958 case T_CHAR:
959 value->c = (jchar)value->i;
960 return;
961 case T_SHORT:
962 value->s = (jshort)value->i;
963 return;
964 default:
965 break; // fail
966 }
967 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
968 }
969
970
971 // Method call (shared by invoke_method and invoke_constructor)
972 static oop invoke(InstanceKlass* klass,
973 const methodHandle& reflected_method,
974 Handle receiver,
975 bool override,
976 objArrayHandle ptypes,
977 BasicType rtype,
978 objArrayHandle args,
979 bool is_method_invoke,
980 TRAPS) {
981
982 ResourceMark rm(THREAD);
983
984 methodHandle method; // actual method to invoke
985 Klass* target_klass; // target klass, receiver's klass for non-static
986
987 // Ensure klass is initialized
988 klass->initialize(CHECK_NULL);
989
990 bool is_static = reflected_method->is_static();
991 if (is_static) {
992 // ignore receiver argument
993 method = reflected_method;
994 target_klass = klass;
995 } else {
996 // check for null receiver
997 if (receiver.is_null()) {
998 THROW_0(vmSymbols::java_lang_NullPointerException());
999 }
1000 // Check class of receiver against class declaring method
1001 if (!receiver->is_a(klass)) {
1002 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class");
1003 }
1004 // target klass is receiver's klass
1005 target_klass = receiver->klass();
1006 // no need to resolve if method is private or <init>
1007 if (reflected_method->is_private() ||
1008 reflected_method->name() == vmSymbols::object_initializer_name()) {
1009 method = reflected_method;
1010 } else {
1011 // resolve based on the receiver
1012 if (reflected_method->method_holder()->is_interface()) {
1013 // resolve interface call
1014 //
1015 // Match resolution errors with those thrown due to reflection inlining
1016 // Linktime resolution & IllegalAccessCheck already done by Class.getMethod()
1017 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, THREAD);
1018 if (HAS_PENDING_EXCEPTION) {
1019 // Method resolution threw an exception; wrap it in an InvocationTargetException
1020 oop resolution_exception = PENDING_EXCEPTION;
1021 CLEAR_PENDING_EXCEPTION;
1022 // JVMTI has already reported the pending exception
1023 // JVMTI internal flag reset is needed in order to report InvocationTargetException
1024 JvmtiExport::clear_detected_exception(THREAD);
1025 JavaCallArguments args(Handle(THREAD, resolution_exception));
1026 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),
1027 vmSymbols::throwable_void_signature(),
1028 &args);
1029 }
1030 } else {
1031 // if the method can be overridden, we resolve using the vtable index.
1032 assert(!reflected_method->has_itable_index(), "");
1033 int index = reflected_method->vtable_index();
1034 method = reflected_method;
1035 if (index != Method::nonvirtual_vtable_index) {
1036 method = methodHandle(THREAD, target_klass->method_at_vtable(index));
1037 }
1038 if (!method.is_null()) {
1039 // Check for abstract methods as well
1040 if (method->is_abstract()) {
1041 // new default: 6531596
1042 ResourceMark rm(THREAD);
1043 stringStream ss;
1044 ss.print("'");
1045 Method::print_external_name(&ss, target_klass, method->name(), method->signature());
1046 ss.print("'");
1047 Handle h_origexception = Exceptions::new_exception(THREAD,
1048 vmSymbols::java_lang_AbstractMethodError(), ss.as_string());
1049 JavaCallArguments args(h_origexception);
1050 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),
1051 vmSymbols::throwable_void_signature(),
1052 &args);
1053 }
1054 }
1055 }
1056 }
1057 }
1058
1059 // I believe this is a ShouldNotGetHere case which requires
1060 // an internal vtable bug. If you ever get this please let Karen know.
1061 if (method.is_null()) {
1062 ResourceMark rm(THREAD);
1063 stringStream ss;
1064 ss.print("'");
1065 Method::print_external_name(&ss, klass,
1066 reflected_method->name(),
1067 reflected_method->signature());
1068 ss.print("'");
1069 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), ss.as_string());
1070 }
1071
1072 assert(ptypes->is_objArray(), "just checking");
1073 int args_len = args.is_null() ? 0 : args->length();
1074 // Check number of arguments
1075 if (ptypes->length() != args_len) {
1076 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1077 "wrong number of arguments");
1078 }
1079
1080 // Create object to contain parameters for the JavaCall
1081 JavaCallArguments java_args(method->size_of_parameters());
1082
1083 if (!is_static) {
1084 java_args.push_oop(receiver);
1085 }
1086
1087 for (int i = 0; i < args_len; i++) {
1088 oop type_mirror = ptypes->obj_at(i);
1089 oop arg = args->obj_at(i);
1090 if (java_lang_Class::is_primitive(type_mirror)) {
1091 jvalue value;
1092 BasicType ptype = basic_type_mirror_to_basic_type(type_mirror);
1093 BasicType atype = Reflection::unbox_for_primitive(arg, &value, CHECK_NULL);
1094 if (ptype != atype) {
1095 Reflection::widen(&value, atype, ptype, CHECK_NULL);
1096 }
1097 switch (ptype) {
1098 case T_BOOLEAN: java_args.push_int(value.z); break;
1099 case T_CHAR: java_args.push_int(value.c); break;
1100 case T_BYTE: java_args.push_int(value.b); break;
1101 case T_SHORT: java_args.push_int(value.s); break;
1102 case T_INT: java_args.push_int(value.i); break;
1103 case T_LONG: java_args.push_long(value.j); break;
1104 case T_FLOAT: java_args.push_float(value.f); break;
1105 case T_DOUBLE: java_args.push_double(value.d); break;
1106 default:
1107 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch");
1108 }
1109 } else {
1110 if (arg != nullptr) {
1111 Klass* k = java_lang_Class::as_Klass(type_mirror);
1112 if (!arg->is_a(k)) {
1113 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
1114 "argument type mismatch");
1115 }
1116 }
1117 Handle arg_handle(THREAD, arg); // Create handle for argument
1118 java_args.push_oop(arg_handle); // Push handle
1119 }
1120 }
1121
1122 assert(java_args.size_of_parameters() == method->size_of_parameters(),
1123 "just checking");
1124
1125 // All oops (including receiver) is passed in as Handles. An potential oop is returned as an
1126 // oop (i.e., NOT as an handle)
1127 JavaValue result(rtype);
1128 JavaCalls::call(&result, method, &java_args, THREAD);
1129
1130 if (HAS_PENDING_EXCEPTION) {
1131 // Method threw an exception; wrap it in an InvocationTargetException
1132 oop target_exception = PENDING_EXCEPTION;
1133 CLEAR_PENDING_EXCEPTION;
1134 // JVMTI has already reported the pending exception
1135 // JVMTI internal flag reset is needed in order to report InvocationTargetException
1136 JvmtiExport::clear_detected_exception(THREAD);
1137
1138 JavaCallArguments args(Handle(THREAD, target_exception));
1139 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(),
1140 vmSymbols::throwable_void_signature(),
1141 &args);
1142 } else {
1143 if (rtype == T_BOOLEAN || rtype == T_BYTE || rtype == T_CHAR || rtype == T_SHORT) {
1144 narrow((jvalue*)result.get_value_addr(), rtype, CHECK_NULL);
1145 }
1146 return Reflection::box((jvalue*)result.get_value_addr(), rtype, THREAD);
1147 }
1148 }
1149
1150 // This would be nicer if, say, java.lang.reflect.Method was a subclass
1151 // of java.lang.reflect.Constructor
1152
1153 oop Reflection::invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS) {
1154 oop mirror = java_lang_reflect_Method::clazz(method_mirror);
1155 int slot = java_lang_reflect_Method::slot(method_mirror);
1156 bool override = java_lang_reflect_Method::override(method_mirror) != 0;
1157 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Method::parameter_types(method_mirror)));
1158
1159 oop return_type_mirror = java_lang_reflect_Method::return_type(method_mirror);
1160 BasicType rtype;
1161 if (java_lang_Class::is_primitive(return_type_mirror)) {
1162 rtype = basic_type_mirror_to_basic_type(return_type_mirror);
1163 } else {
1164 rtype = T_OBJECT;
1165 }
1166
1167 InstanceKlass* klass = InstanceKlass::cast(java_lang_Class::as_Klass(mirror));
1168 Method* m = klass->method_with_idnum(slot);
1169 if (m == nullptr) {
1170 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke");
1171 }
1172 methodHandle method(THREAD, m);
1173
1174 return invoke(klass, method, receiver, override, ptypes, rtype, args, true, THREAD);
1175 }
1176
1177
1178 oop Reflection::invoke_constructor(oop constructor_mirror, objArrayHandle args, TRAPS) {
1179 oop mirror = java_lang_reflect_Constructor::clazz(constructor_mirror);
1180 int slot = java_lang_reflect_Constructor::slot(constructor_mirror);
1181 bool override = java_lang_reflect_Constructor::override(constructor_mirror) != 0;
1182 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Constructor::parameter_types(constructor_mirror)));
1183
1184 InstanceKlass* klass = InstanceKlass::cast(java_lang_Class::as_Klass(mirror));
1185 Method* m = klass->method_with_idnum(slot);
1186 if (m == nullptr) {
1187 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke");
1188 }
1189 methodHandle method(THREAD, m);
1190
1191 // Make sure klass gets initialize
1192 klass->initialize(CHECK_NULL);
1193
1194 // Create new instance (the receiver)
1195 klass->check_valid_for_instantiation(false, CHECK_NULL);
1196 Handle receiver = klass->allocate_instance_handle(CHECK_NULL);
1197
1198 // Ignore result from call and return receiver
1199 invoke(klass, method, receiver, override, ptypes, T_VOID, args, false, CHECK_NULL);
1200 return receiver();
1201 }