108 // print in a single call to reduce interleaving between threads
109 if (source_file != NULL) {
110 log_debug(class, resolve)("%s %s %s (verification)", verify, resolve, source_file);
111 } else {
112 log_debug(class, resolve)("%s %s (verification)", verify, resolve);
113 }
114 }
115
116 // Prints the end-verification message to the appropriate output.
117 void Verifier::log_end_verification(outputStream* st, const char* klassName, Symbol* exception_name, TRAPS) {
118 if (HAS_PENDING_EXCEPTION) {
119 st->print("Verification for %s has", klassName);
120 st->print_cr(" exception pending %s ",
121 PENDING_EXCEPTION->klass()->external_name());
122 } else if (exception_name != NULL) {
123 st->print_cr("Verification for %s failed", klassName);
124 }
125 st->print_cr("End class verification for: %s", klassName);
126 }
127
128 bool Verifier::verify(instanceKlassHandle klass, Verifier::Mode mode, bool should_verify_class, TRAPS) {
129 HandleMark hm(THREAD);
130 ResourceMark rm(THREAD);
131
132 // Eagerly allocate the identity hash code for a klass. This is a fallout
133 // from 6320749 and 8059924: hash code generator is not supposed to be called
134 // during the safepoint, but it allows to sneak the hashcode in during
135 // verification. Without this eager hashcode generation, we may end up
136 // installing the hashcode during some other operation, which may be at
137 // safepoint -- blowing up the checks. It was previously done as the side
138 // effect (sic!) for external_name(), but instead of doing that, we opt to
139 // explicitly push the hashcode in here. This is signify the following block
140 // is IMPORTANT:
141 if (klass->java_mirror() != NULL) {
142 klass->java_mirror()->identity_hash();
143 }
144
145 if (!is_eligible_for_verification(klass, should_verify_class)) {
146 return true;
147 }
148
186 exception_message = split_verifier.exception_message();
187 }
188 } else {
189 exception_name = inference_verify(
190 klass, message_buffer, message_buffer_len, THREAD);
191 }
192
193 if (log_is_enabled(Info, class, init)){
194 log_end_verification(Log(class, init)::info_stream(), klassName, exception_name, THREAD);
195 }
196 if (log_is_enabled(Info, verification)){
197 log_end_verification(Log(verification)::info_stream(), klassName, exception_name, THREAD);
198 }
199
200 if (HAS_PENDING_EXCEPTION) {
201 return false; // use the existing exception
202 } else if (exception_name == NULL) {
203 return true; // verifcation succeeded
204 } else { // VerifyError or ClassFormatError to be created and thrown
205 ResourceMark rm(THREAD);
206 instanceKlassHandle kls =
207 SystemDictionary::resolve_or_fail(exception_name, true, CHECK_false);
208 if (log_is_enabled(Debug, class, resolve)) {
209 Verifier::trace_class_resolution(kls(), klass());
210 }
211
212 while (!kls.is_null()) {
213 if (kls == klass) {
214 // If the class being verified is the exception we're creating
215 // or one of it's superclasses, we're in trouble and are going
216 // to infinitely recurse when we try to initialize the exception.
217 // So bail out here by throwing the preallocated VM error.
218 THROW_OOP_(Universe::virtual_machine_error_instance(), false);
219 }
220 kls = kls->super();
221 }
222 message_buffer[message_buffer_len - 1] = '\0'; // just to be sure
223 THROW_MSG_(exception_name, exception_message, false);
224 }
225 }
226
227 bool Verifier::is_eligible_for_verification(instanceKlassHandle klass, bool should_verify_class) {
228 Symbol* name = klass->name();
229 Klass* refl_magic_klass = SystemDictionary::reflect_MagicAccessorImpl_klass();
230
231 bool is_reflect = refl_magic_klass != NULL && klass->is_subtype_of(refl_magic_klass);
232
233 return (should_verify_for(klass->class_loader(), should_verify_class) &&
234 // return if the class is a bootstrapping class
235 // or defineClass specified not to verify by default (flags override passed arg)
236 // We need to skip the following four for bootstraping
237 name != vmSymbols::java_lang_Object() &&
238 name != vmSymbols::java_lang_Class() &&
239 name != vmSymbols::java_lang_String() &&
240 name != vmSymbols::java_lang_Throwable() &&
241
242 // Can not verify the bytecodes for shared classes because they have
243 // already been rewritten to contain constant pool cache indices,
244 // which the verifier can't understand.
245 // Shared classes shouldn't have stackmaps either.
246 !klass()->is_shared() &&
247
248 // As of the fix for 4486457 we disable verification for all of the
249 // dynamically-generated bytecodes associated with the 1.4
250 // reflection implementation, not just those associated with
251 // jdk/internal/reflect/SerializationConstructorAccessor.
252 // NOTE: this is called too early in the bootstrapping process to be
253 // guarded by Universe::is_gte_jdk14x_version().
254 // Also for lambda generated code, gte jdk8
255 (!is_reflect));
256 }
257
258 Symbol* Verifier::inference_verify(
259 instanceKlassHandle klass, char* message, size_t message_len, TRAPS) {
260 JavaThread* thread = (JavaThread*)THREAD;
261 JNIEnv *env = thread->jni_environment();
262
263 void* verify_func = verify_byte_codes_fn();
264
265 if (verify_func == NULL) {
266 jio_snprintf(message, message_len, "Could not link verifier");
267 return vmSymbols::java_lang_VerifyError();
268 }
269
270 ResourceMark rm(THREAD);
271 log_info(verification)("Verifying class %s with old format", klass->external_name());
272
273 jclass cls = (jclass) JNIHandles::make_local(env, klass->java_mirror());
274 jint result;
275
276 {
277 HandleMark hm(thread);
278 ThreadToNativeFromVM ttn(thread);
279 // ThreadToNativeFromVM takes care of changing thread_state, so safepoint
542 streamIndentor si2(ss);
543 int current_offset = -1;
544 address end_of_sm_table = (address)sm_table + method->stackmap_data()->length();
545 for (u2 i = 0; i < sm_table->number_of_entries(); ++i) {
546 ss->indent();
547 if (!sm_frame->verify((address)sm_frame, end_of_sm_table)) {
548 sm_frame->print_truncated(ss, current_offset);
549 return;
550 }
551 sm_frame->print_on(ss, current_offset);
552 ss->cr();
553 current_offset += sm_frame->offset_delta();
554 sm_frame = sm_frame->next();
555 }
556 }
557 }
558
559 // Methods in ClassVerifier
560
561 ClassVerifier::ClassVerifier(
562 instanceKlassHandle klass, TRAPS)
563 : _thread(THREAD), _exception_type(NULL), _message(NULL), _klass(klass) {
564 _this_type = VerificationType::reference_type(klass->name());
565 // Create list to hold symbols in reference area.
566 _symbols = new GrowableArray<Symbol*>(100, 0, NULL);
567 }
568
569 ClassVerifier::~ClassVerifier() {
570 // Decrement the reference count for any symbols created.
571 for (int i = 0; i < _symbols->length(); i++) {
572 Symbol* s = _symbols->at(i);
573 s->decrement_refcount();
574 }
575 }
576
577 VerificationType ClassVerifier::object_type() const {
578 return VerificationType::reference_type(vmSymbols::java_lang_Object());
579 }
580
581 TypeOrigin ClassVerifier::ref_ctx(const char* sig, TRAPS) {
582 VerificationType vt = VerificationType::reference_type(
1984 va_start(va, msg);
1985 ss.vprint(msg, va);
1986 va_end(va);
1987 if (!_method.is_null()) {
1988 ss.print(" in method %s", _method->name_and_sig_as_C_string());
1989 }
1990 _message = ss.as_string();
1991 }
1992
1993 Klass* ClassVerifier::load_class(Symbol* name, TRAPS) {
1994 HandleMark hm(THREAD);
1995 // Get current loader and protection domain first.
1996 oop loader = current_class()->class_loader();
1997 oop protection_domain = current_class()->protection_domain();
1998
1999 Klass* kls = SystemDictionary::resolve_or_fail(
2000 name, Handle(THREAD, loader), Handle(THREAD, protection_domain),
2001 true, THREAD);
2002
2003 if (log_is_enabled(Debug, class, resolve)) {
2004 instanceKlassHandle cur_class = current_class();
2005 Verifier::trace_class_resolution(kls, cur_class());
2006 }
2007 return kls;
2008 }
2009
2010 bool ClassVerifier::is_protected_access(instanceKlassHandle this_class,
2011 Klass* target_class,
2012 Symbol* field_name,
2013 Symbol* field_sig,
2014 bool is_method) {
2015 NoSafepointVerifier nosafepoint;
2016
2017 // If target class isn't a super class of this class, we don't worry about this case
2018 if (!this_class->is_subclass_of(target_class)) {
2019 return false;
2020 }
2021 // Check if the specified method or field is protected
2022 InstanceKlass* target_instance = InstanceKlass::cast(target_class);
2023 fieldDescriptor fd;
2024 if (is_method) {
2025 Method* m = target_instance->uncached_lookup_method(field_name, field_sig, Klass::find_overpass);
2026 if (m != NULL && m->is_protected()) {
2027 if (!this_class->is_same_class_package(m->method_holder())) {
2028 return true;
2029 }
2030 }
2153 verify_error(ErrorContext::bad_code(bci),
2154 "Bad lookupswitch instruction");
2155 return;
2156 }
2157 }
2158 }
2159 int target = bci + default_offset;
2160 stackmap_table->check_jump_target(current_frame, target, CHECK_VERIFY(this));
2161 for (int i = 0; i < keys; i++) {
2162 // Because check_jump_target() may safepoint, the bytecode could have
2163 // moved, which means 'aligned_bcp' is no good and needs to be recalculated.
2164 aligned_bcp = (address)round_to((intptr_t)(bcs->bcp() + 1), jintSize);
2165 target = bci + (jint)Bytes::get_Java_u4(aligned_bcp+(3+i*delta)*jintSize);
2166 stackmap_table->check_jump_target(
2167 current_frame, target, CHECK_VERIFY(this));
2168 }
2169 NOT_PRODUCT(aligned_bcp = NULL); // no longer valid at this point
2170 }
2171
2172 bool ClassVerifier::name_in_supers(
2173 Symbol* ref_name, instanceKlassHandle current) {
2174 Klass* super = current->super();
2175 while (super != NULL) {
2176 if (super->name() == ref_name) {
2177 return true;
2178 }
2179 super = super->super();
2180 }
2181 return false;
2182 }
2183
2184 void ClassVerifier::verify_field_instructions(RawBytecodeStream* bcs,
2185 StackMapFrame* current_frame,
2186 const constantPoolHandle& cp,
2187 bool allow_arrays,
2188 TRAPS) {
2189 u2 index = bcs->get_index_u2();
2190 verify_cp_type(bcs->bci(), index, cp,
2191 1 << JVM_CONSTANT_Fieldref, CHECK_VERIFY(this));
2192
2193 // Get field name and signature
2583 verify_error(ErrorContext::bad_type(bci,
2584 TypeOrigin::cp(new_class_index, new_class_type),
2585 TypeOrigin::cp(ref_class_index, ref_class_type)),
2586 "Call to wrong <init> method");
2587 return;
2588 }
2589 // According to the VM spec, if the referent class is a superclass of the
2590 // current class, and is in a different runtime package, and the method is
2591 // protected, then the objectref must be the current class or a subclass
2592 // of the current class.
2593 VerificationType objectref_type = new_class_type;
2594 if (name_in_supers(ref_class_type.name(), current_class())) {
2595 Klass* ref_klass = load_class(ref_class_type.name(), CHECK);
2596 if (was_recursively_verified()) return;
2597 Method* m = InstanceKlass::cast(ref_klass)->uncached_lookup_method(
2598 vmSymbols::object_initializer_name(),
2599 cp->signature_ref_at(bcs->get_index_u2()),
2600 Klass::find_overpass);
2601 // Do nothing if method is not found. Let resolution detect the error.
2602 if (m != NULL) {
2603 instanceKlassHandle mh(THREAD, m->method_holder());
2604 if (m->is_protected() && !mh->is_same_class_package(_klass())) {
2605 bool assignable = current_type().is_assignable_from(
2606 objectref_type, this, true, CHECK_VERIFY(this));
2607 if (!assignable) {
2608 verify_error(ErrorContext::bad_type(bci,
2609 TypeOrigin::cp(new_class_index, objectref_type),
2610 TypeOrigin::implicit(current_type())),
2611 "Bad access to protected <init> method");
2612 return;
2613 }
2614 }
2615 }
2616 }
2617 // Check the exception handler target stackmaps with the locals from the
2618 // incoming stackmap (before initialize_object() changes them to outgoing
2619 // state).
2620 if (in_try_block) {
2621 if (was_recursively_verified()) return;
2622 verify_exception_handler_targets(bci, *this_uninit, current_frame,
2623 stackmap_table, CHECK_VERIFY(this));
2624 }
2625 current_frame->initialize_object(type, new_class_type);
2626 } else {
2627 verify_error(ErrorContext::bad_type(bci, current_frame->stack_top_ctx()),
2628 "Bad operand type when invoking <init>");
2629 return;
2630 }
2631 }
2632
2633 bool ClassVerifier::is_same_or_direct_interface(
2634 instanceKlassHandle klass,
2635 VerificationType klass_type,
2636 VerificationType ref_class_type) {
2637 if (ref_class_type.equals(klass_type)) return true;
2638 Array<Klass*>* local_interfaces = klass->local_interfaces();
2639 if (local_interfaces != NULL) {
2640 for (int x = 0; x < local_interfaces->length(); x++) {
2641 Klass* k = local_interfaces->at(x);
2642 assert (k != NULL && k->is_interface(), "invalid interface");
2643 if (ref_class_type.equals(VerificationType::reference_type(k->name()))) {
2644 return true;
2645 }
2646 }
2647 }
2648 return false;
2649 }
2650
2651 void ClassVerifier::verify_invoke_instructions(
2652 RawBytecodeStream* bcs, u4 code_length, StackMapFrame* current_frame,
2653 bool in_try_block, bool *this_uninit, VerificationType return_type,
2654 const constantPoolHandle& cp, StackMapTable* stackmap_table, TRAPS) {
|
108 // print in a single call to reduce interleaving between threads
109 if (source_file != NULL) {
110 log_debug(class, resolve)("%s %s %s (verification)", verify, resolve, source_file);
111 } else {
112 log_debug(class, resolve)("%s %s (verification)", verify, resolve);
113 }
114 }
115
116 // Prints the end-verification message to the appropriate output.
117 void Verifier::log_end_verification(outputStream* st, const char* klassName, Symbol* exception_name, TRAPS) {
118 if (HAS_PENDING_EXCEPTION) {
119 st->print("Verification for %s has", klassName);
120 st->print_cr(" exception pending %s ",
121 PENDING_EXCEPTION->klass()->external_name());
122 } else if (exception_name != NULL) {
123 st->print_cr("Verification for %s failed", klassName);
124 }
125 st->print_cr("End class verification for: %s", klassName);
126 }
127
128 bool Verifier::verify(InstanceKlass* klass, Verifier::Mode mode, bool should_verify_class, TRAPS) {
129 HandleMark hm(THREAD);
130 ResourceMark rm(THREAD);
131
132 // Eagerly allocate the identity hash code for a klass. This is a fallout
133 // from 6320749 and 8059924: hash code generator is not supposed to be called
134 // during the safepoint, but it allows to sneak the hashcode in during
135 // verification. Without this eager hashcode generation, we may end up
136 // installing the hashcode during some other operation, which may be at
137 // safepoint -- blowing up the checks. It was previously done as the side
138 // effect (sic!) for external_name(), but instead of doing that, we opt to
139 // explicitly push the hashcode in here. This is signify the following block
140 // is IMPORTANT:
141 if (klass->java_mirror() != NULL) {
142 klass->java_mirror()->identity_hash();
143 }
144
145 if (!is_eligible_for_verification(klass, should_verify_class)) {
146 return true;
147 }
148
186 exception_message = split_verifier.exception_message();
187 }
188 } else {
189 exception_name = inference_verify(
190 klass, message_buffer, message_buffer_len, THREAD);
191 }
192
193 if (log_is_enabled(Info, class, init)){
194 log_end_verification(Log(class, init)::info_stream(), klassName, exception_name, THREAD);
195 }
196 if (log_is_enabled(Info, verification)){
197 log_end_verification(Log(verification)::info_stream(), klassName, exception_name, THREAD);
198 }
199
200 if (HAS_PENDING_EXCEPTION) {
201 return false; // use the existing exception
202 } else if (exception_name == NULL) {
203 return true; // verifcation succeeded
204 } else { // VerifyError or ClassFormatError to be created and thrown
205 ResourceMark rm(THREAD);
206 Klass* kls =
207 SystemDictionary::resolve_or_fail(exception_name, true, CHECK_false);
208 if (log_is_enabled(Debug, class, resolve)) {
209 Verifier::trace_class_resolution(kls, klass);
210 }
211
212 while (kls != NULL) {
213 if (kls == klass) {
214 // If the class being verified is the exception we're creating
215 // or one of it's superclasses, we're in trouble and are going
216 // to infinitely recurse when we try to initialize the exception.
217 // So bail out here by throwing the preallocated VM error.
218 THROW_OOP_(Universe::virtual_machine_error_instance(), false);
219 }
220 kls = kls->super();
221 }
222 message_buffer[message_buffer_len - 1] = '\0'; // just to be sure
223 THROW_MSG_(exception_name, exception_message, false);
224 }
225 }
226
227 bool Verifier::is_eligible_for_verification(InstanceKlass* klass, bool should_verify_class) {
228 Symbol* name = klass->name();
229 Klass* refl_magic_klass = SystemDictionary::reflect_MagicAccessorImpl_klass();
230
231 bool is_reflect = refl_magic_klass != NULL && klass->is_subtype_of(refl_magic_klass);
232
233 return (should_verify_for(klass->class_loader(), should_verify_class) &&
234 // return if the class is a bootstrapping class
235 // or defineClass specified not to verify by default (flags override passed arg)
236 // We need to skip the following four for bootstraping
237 name != vmSymbols::java_lang_Object() &&
238 name != vmSymbols::java_lang_Class() &&
239 name != vmSymbols::java_lang_String() &&
240 name != vmSymbols::java_lang_Throwable() &&
241
242 // Can not verify the bytecodes for shared classes because they have
243 // already been rewritten to contain constant pool cache indices,
244 // which the verifier can't understand.
245 // Shared classes shouldn't have stackmaps either.
246 !klass->is_shared() &&
247
248 // As of the fix for 4486457 we disable verification for all of the
249 // dynamically-generated bytecodes associated with the 1.4
250 // reflection implementation, not just those associated with
251 // jdk/internal/reflect/SerializationConstructorAccessor.
252 // NOTE: this is called too early in the bootstrapping process to be
253 // guarded by Universe::is_gte_jdk14x_version().
254 // Also for lambda generated code, gte jdk8
255 (!is_reflect));
256 }
257
258 Symbol* Verifier::inference_verify(
259 InstanceKlass* klass, char* message, size_t message_len, TRAPS) {
260 JavaThread* thread = (JavaThread*)THREAD;
261 JNIEnv *env = thread->jni_environment();
262
263 void* verify_func = verify_byte_codes_fn();
264
265 if (verify_func == NULL) {
266 jio_snprintf(message, message_len, "Could not link verifier");
267 return vmSymbols::java_lang_VerifyError();
268 }
269
270 ResourceMark rm(THREAD);
271 log_info(verification)("Verifying class %s with old format", klass->external_name());
272
273 jclass cls = (jclass) JNIHandles::make_local(env, klass->java_mirror());
274 jint result;
275
276 {
277 HandleMark hm(thread);
278 ThreadToNativeFromVM ttn(thread);
279 // ThreadToNativeFromVM takes care of changing thread_state, so safepoint
542 streamIndentor si2(ss);
543 int current_offset = -1;
544 address end_of_sm_table = (address)sm_table + method->stackmap_data()->length();
545 for (u2 i = 0; i < sm_table->number_of_entries(); ++i) {
546 ss->indent();
547 if (!sm_frame->verify((address)sm_frame, end_of_sm_table)) {
548 sm_frame->print_truncated(ss, current_offset);
549 return;
550 }
551 sm_frame->print_on(ss, current_offset);
552 ss->cr();
553 current_offset += sm_frame->offset_delta();
554 sm_frame = sm_frame->next();
555 }
556 }
557 }
558
559 // Methods in ClassVerifier
560
561 ClassVerifier::ClassVerifier(
562 InstanceKlass* klass, TRAPS)
563 : _thread(THREAD), _exception_type(NULL), _message(NULL), _klass(klass) {
564 _this_type = VerificationType::reference_type(klass->name());
565 // Create list to hold symbols in reference area.
566 _symbols = new GrowableArray<Symbol*>(100, 0, NULL);
567 }
568
569 ClassVerifier::~ClassVerifier() {
570 // Decrement the reference count for any symbols created.
571 for (int i = 0; i < _symbols->length(); i++) {
572 Symbol* s = _symbols->at(i);
573 s->decrement_refcount();
574 }
575 }
576
577 VerificationType ClassVerifier::object_type() const {
578 return VerificationType::reference_type(vmSymbols::java_lang_Object());
579 }
580
581 TypeOrigin ClassVerifier::ref_ctx(const char* sig, TRAPS) {
582 VerificationType vt = VerificationType::reference_type(
1984 va_start(va, msg);
1985 ss.vprint(msg, va);
1986 va_end(va);
1987 if (!_method.is_null()) {
1988 ss.print(" in method %s", _method->name_and_sig_as_C_string());
1989 }
1990 _message = ss.as_string();
1991 }
1992
1993 Klass* ClassVerifier::load_class(Symbol* name, TRAPS) {
1994 HandleMark hm(THREAD);
1995 // Get current loader and protection domain first.
1996 oop loader = current_class()->class_loader();
1997 oop protection_domain = current_class()->protection_domain();
1998
1999 Klass* kls = SystemDictionary::resolve_or_fail(
2000 name, Handle(THREAD, loader), Handle(THREAD, protection_domain),
2001 true, THREAD);
2002
2003 if (log_is_enabled(Debug, class, resolve)) {
2004 InstanceKlass* cur_class = InstanceKlass::cast(current_class());
2005 Verifier::trace_class_resolution(kls, cur_class);
2006 }
2007 return kls;
2008 }
2009
2010 bool ClassVerifier::is_protected_access(InstanceKlass* this_class,
2011 Klass* target_class,
2012 Symbol* field_name,
2013 Symbol* field_sig,
2014 bool is_method) {
2015 NoSafepointVerifier nosafepoint;
2016
2017 // If target class isn't a super class of this class, we don't worry about this case
2018 if (!this_class->is_subclass_of(target_class)) {
2019 return false;
2020 }
2021 // Check if the specified method or field is protected
2022 InstanceKlass* target_instance = InstanceKlass::cast(target_class);
2023 fieldDescriptor fd;
2024 if (is_method) {
2025 Method* m = target_instance->uncached_lookup_method(field_name, field_sig, Klass::find_overpass);
2026 if (m != NULL && m->is_protected()) {
2027 if (!this_class->is_same_class_package(m->method_holder())) {
2028 return true;
2029 }
2030 }
2153 verify_error(ErrorContext::bad_code(bci),
2154 "Bad lookupswitch instruction");
2155 return;
2156 }
2157 }
2158 }
2159 int target = bci + default_offset;
2160 stackmap_table->check_jump_target(current_frame, target, CHECK_VERIFY(this));
2161 for (int i = 0; i < keys; i++) {
2162 // Because check_jump_target() may safepoint, the bytecode could have
2163 // moved, which means 'aligned_bcp' is no good and needs to be recalculated.
2164 aligned_bcp = (address)round_to((intptr_t)(bcs->bcp() + 1), jintSize);
2165 target = bci + (jint)Bytes::get_Java_u4(aligned_bcp+(3+i*delta)*jintSize);
2166 stackmap_table->check_jump_target(
2167 current_frame, target, CHECK_VERIFY(this));
2168 }
2169 NOT_PRODUCT(aligned_bcp = NULL); // no longer valid at this point
2170 }
2171
2172 bool ClassVerifier::name_in_supers(
2173 Symbol* ref_name, InstanceKlass* current) {
2174 Klass* super = current->super();
2175 while (super != NULL) {
2176 if (super->name() == ref_name) {
2177 return true;
2178 }
2179 super = super->super();
2180 }
2181 return false;
2182 }
2183
2184 void ClassVerifier::verify_field_instructions(RawBytecodeStream* bcs,
2185 StackMapFrame* current_frame,
2186 const constantPoolHandle& cp,
2187 bool allow_arrays,
2188 TRAPS) {
2189 u2 index = bcs->get_index_u2();
2190 verify_cp_type(bcs->bci(), index, cp,
2191 1 << JVM_CONSTANT_Fieldref, CHECK_VERIFY(this));
2192
2193 // Get field name and signature
2583 verify_error(ErrorContext::bad_type(bci,
2584 TypeOrigin::cp(new_class_index, new_class_type),
2585 TypeOrigin::cp(ref_class_index, ref_class_type)),
2586 "Call to wrong <init> method");
2587 return;
2588 }
2589 // According to the VM spec, if the referent class is a superclass of the
2590 // current class, and is in a different runtime package, and the method is
2591 // protected, then the objectref must be the current class or a subclass
2592 // of the current class.
2593 VerificationType objectref_type = new_class_type;
2594 if (name_in_supers(ref_class_type.name(), current_class())) {
2595 Klass* ref_klass = load_class(ref_class_type.name(), CHECK);
2596 if (was_recursively_verified()) return;
2597 Method* m = InstanceKlass::cast(ref_klass)->uncached_lookup_method(
2598 vmSymbols::object_initializer_name(),
2599 cp->signature_ref_at(bcs->get_index_u2()),
2600 Klass::find_overpass);
2601 // Do nothing if method is not found. Let resolution detect the error.
2602 if (m != NULL) {
2603 InstanceKlass* mh = m->method_holder();
2604 if (m->is_protected() && !mh->is_same_class_package(_klass)) {
2605 bool assignable = current_type().is_assignable_from(
2606 objectref_type, this, true, CHECK_VERIFY(this));
2607 if (!assignable) {
2608 verify_error(ErrorContext::bad_type(bci,
2609 TypeOrigin::cp(new_class_index, objectref_type),
2610 TypeOrigin::implicit(current_type())),
2611 "Bad access to protected <init> method");
2612 return;
2613 }
2614 }
2615 }
2616 }
2617 // Check the exception handler target stackmaps with the locals from the
2618 // incoming stackmap (before initialize_object() changes them to outgoing
2619 // state).
2620 if (in_try_block) {
2621 if (was_recursively_verified()) return;
2622 verify_exception_handler_targets(bci, *this_uninit, current_frame,
2623 stackmap_table, CHECK_VERIFY(this));
2624 }
2625 current_frame->initialize_object(type, new_class_type);
2626 } else {
2627 verify_error(ErrorContext::bad_type(bci, current_frame->stack_top_ctx()),
2628 "Bad operand type when invoking <init>");
2629 return;
2630 }
2631 }
2632
2633 bool ClassVerifier::is_same_or_direct_interface(
2634 InstanceKlass* klass,
2635 VerificationType klass_type,
2636 VerificationType ref_class_type) {
2637 if (ref_class_type.equals(klass_type)) return true;
2638 Array<Klass*>* local_interfaces = klass->local_interfaces();
2639 if (local_interfaces != NULL) {
2640 for (int x = 0; x < local_interfaces->length(); x++) {
2641 Klass* k = local_interfaces->at(x);
2642 assert (k != NULL && k->is_interface(), "invalid interface");
2643 if (ref_class_type.equals(VerificationType::reference_type(k->name()))) {
2644 return true;
2645 }
2646 }
2647 }
2648 return false;
2649 }
2650
2651 void ClassVerifier::verify_invoke_instructions(
2652 RawBytecodeStream* bcs, u4 code_length, StackMapFrame* current_frame,
2653 bool in_try_block, bool *this_uninit, VerificationType return_type,
2654 const constantPoolHandle& cp, StackMapTable* stackmap_table, TRAPS) {
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