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Valgrind Report for Zend/tests/bug64896.phpt ('Bug #64896 (Segfault with gc_collect_cycles using unserialize on certain objects)')

Script

1: <?php
2: $bar 
NULL;
3: class 
bad
4:
{
5:     private 
$_private = array();
6:
7:     public function 
__construct()
8:     {
9:         
$this->_private[] = 'php';
10:     }
11:
12:     public function 
__destruct()
13:     {
14:         global 
$bar;
15:         
$bar $this;
16:     }
17: }
18:
19:
$foo = new stdclass;
20:
$foo->foo $foo;
21:
$foo->bad = new bad;
22:
23:
gc_disable();
24:
25:
unserialize(serialize($foo));
26:
gc_collect_cycles();
27:
var_dump($bar); 
28:
/*  will output:
29: object(bad)#4 (1) {
30:   ["_private":"bad":private]=>
31:   &UNKNOWN:0
32: }
33: */
34:
?>
35:

Report

==5527== Invalid read of size 1
==5527==    at 0xCA1E9D: php_var_dump (var.c:99)
==5527==    by 0xCA1E0D: php_object_property_dump (var.c:82)
==5527==    by 0xED9CF1: zend_hash_apply_with_arguments (zend_hash.c:701)
==5527==    by 0xCA278A: php_var_dump (var.c:146)
==5527==    by 0xCA2A9C: zif_var_dump (var.c:183)
==5527==    by 0xF2B778: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==5527==    by 0xF372E4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2599)
==5527==    by 0xF291FE: execute_ex (zend_vm_execute.h:363)
==5527==    by 0xF29DA1: zend_execute (zend_vm_execute.h:388)
==5527==    by 0xEBEB3F: zend_execute_scripts (zend.c:1341)
==5527==    by 0xDDCAE7: php_execute_script (main.c:2597)
==5527==    by 0x1076456: do_cli (php_cli.c:994)
==5527==  Address 0x153c4074 is 20 bytes inside a block of size 32 free'd
==5527==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==5527==    by 0xE688BC: _efree (zend_alloc.c:2437)
==5527==    by 0xF007F3: gc_collect_cycles (zend_gc.c:846)
==5527==    by 0xEDF18A: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==5527==    by 0xF2B778: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==5527==    by 0xF372E4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2599)
==5527==    by 0xF291FE: execute_ex (zend_vm_execute.h:363)
==5527==    by 0xF29DA1: zend_execute (zend_vm_execute.h:388)
==5527==    by 0xEBEB3F: zend_execute_scripts (zend.c:1341)
==5527==    by 0xDDCAE7: php_execute_script (main.c:2597)
==5527==    by 0x1076456: do_cli (php_cli.c:994)
==5527==    by 0x1077C03: main (php_cli.c:1378)
==5527== 
==5527== Invalid read of size 1
==5527==    at 0xCA1F90: zval_isref_p (zend.h:415)
==5527==    by 0xCA1F90: php_var_dump (var.c:104)
==5527==    by 0xCA1E0D: php_object_property_dump (var.c:82)
==5527==    by 0xED9CF1: zend_hash_apply_with_arguments (zend_hash.c:701)
==5527==    by 0xCA278A: php_var_dump (var.c:146)
==5527==    by 0xCA2A9C: zif_var_dump (var.c:183)
==5527==    by 0xF2B778: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==5527==    by 0xF372E4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2599)
==5527==    by 0xF291FE: execute_ex (zend_vm_execute.h:363)
==5527==    by 0xF29DA1: zend_execute (zend_vm_execute.h:388)
==5527==    by 0xEBEB3F: zend_execute_scripts (zend.c:1341)
==5527==    by 0xDDCAE7: php_execute_script (main.c:2597)
==5527==    by 0x1076456: do_cli (php_cli.c:994)
==5527==  Address 0x153c4075 is 21 bytes inside a block of size 32 free'd
==5527==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==5527==    by 0xE688BC: _efree (zend_alloc.c:2437)
==5527==    by 0xF007F3: gc_collect_cycles (zend_gc.c:846)
==5527==    by 0xEDF18A: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==5527==    by 0xF2B778: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==5527==    by 0xF372E4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2599)
==5527==    by 0xF291FE: execute_ex (zend_vm_execute.h:363)
==5527==    by 0xF29DA1: zend_execute (zend_vm_execute.h:388)
==5527==    by 0xEBEB3F: zend_execute_scripts (zend.c:1341)
==5527==    by 0xDDCAE7: php_execute_script (main.c:2597)
==5527==    by 0x1076456: do_cli (php_cli.c:994)
==5527==    by 0x1077C03: main (php_cli.c:1378)
==5527== 
==5527== Invalid read of size 4
==5527==    at 0xE9990F: zval_delref_p (zend.h:411)
==5527==    by 0xE9990F: i_zval_ptr_dtor (zend_execute.h:76)
==5527==    by 0xE9990F: _zval_ptr_dtor (zend_execute_API.c:424)
==5527==    by 0xED9305: zend_hash_destroy (zend_hash.c:548)
==5527==    by 0xF0DC68: zend_object_std_dtor (zend_objects.c:44)
==5527==    by 0xF0E3CC: zend_objects_free_object_storage (zend_objects.c:137)
==5527==    by 0xF1D8EA: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==5527==    by 0xF1D484: zend_objects_store_del_ref (zend_objects_API.c:178)
==5527==    by 0xEB95AB: _zval_dtor_func (zend_variables.c:57)
==5527==    by 0xE999B1: _zval_dtor (zend_variables.h:35)
==5527==    by 0xE999B1: i_zval_ptr_dtor (zend_execute.h:79)
==5527==    by 0xE999B1: _zval_ptr_dtor (zend_execute_API.c:424)
==5527==    by 0xED6B64: i_zend_hash_bucket_delete (zend_hash.c:182)
==5527==    by 0xED6B64: zend_hash_bucket_delete (zend_hash.c:192)
==5527==    by 0xED9F24: zend_hash_reverse_apply (zend_hash.c:733)
==5527==    by 0xE98AA8: shutdown_destructors (zend_execute_API.c:214)
==5527==    by 0xEBCE6E: zend_call_destructors (zend.c:944)
==5527==  Address 0x153c4070 is 16 bytes inside a block of size 32 free'd
==5527==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==5527==    by 0xE688BC: _efree (zend_alloc.c:2437)
==5527==    by 0xF007F3: gc_collect_cycles (zend_gc.c:846)
==5527==    by 0xEDF18A: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==5527==    by 0xF2B778: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==5527==    by 0xF372E4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2599)
==5527==    by 0xF291FE: execute_ex (zend_vm_execute.h:363)
==5527==    by 0xF29DA1: zend_execute (zend_vm_execute.h:388)
==5527==    by 0xEBEB3F: zend_execute_scripts (zend.c:1341)
==5527==    by 0xDDCAE7: php_execute_script (main.c:2597)
==5527==    by 0x1076456: do_cli (php_cli.c:994)
==5527==    by 0x1077C03: main (php_cli.c:1378)
==5527== 
==5527== Invalid write of size 4
==5527==    at 0xE99919: zval_delref_p (zend.h:411)
==5527==    by 0xE99919: i_zval_ptr_dtor (zend_execute.h:76)
==5527==    by 0xE99919: _zval_ptr_dtor (zend_execute_API.c:424)
==5527==    by 0xED9305: zend_hash_destroy (zend_hash.c:548)
==5527==    by 0xF0DC68: zend_object_std_dtor (zend_objects.c:44)
==5527==    by 0xF0E3CC: zend_objects_free_object_storage (zend_objects.c:137)
==5527==    by 0xF1D8EA: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==5527==    by 0xF1D484: zend_objects_store_del_ref (zend_objects_API.c:178)
==5527==    by 0xEB95AB: _zval_dtor_func (zend_variables.c:57)
==5527==    by 0xE999B1: _zval_dtor (zend_variables.h:35)
==5527==    by 0xE999B1: i_zval_ptr_dtor (zend_execute.h:79)
==5527==    by 0xE999B1: _zval_ptr_dtor (zend_execute_API.c:424)
==5527==    by 0xED6B64: i_zend_hash_bucket_delete (zend_hash.c:182)
==5527==    by 0xED6B64: zend_hash_bucket_delete (zend_hash.c:192)
==5527==    by 0xED9F24: zend_hash_reverse_apply (zend_hash.c:733)
==5527==    by 0xE98AA8: shutdown_destructors (zend_execute_API.c:214)
==5527==    by 0xEBCE6E: zend_call_destructors (zend.c:944)
==5527==  Address 0x153c4070 is 16 bytes inside a block of size 32 free'd
==5527==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==5527==    by 0xE688BC: _efree (zend_alloc.c:2437)
==5527==    by 0xF007F3: gc_collect_cycles (zend_gc.c:846)
==5527==    by 0xEDF18A: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==5527==    by 0xF2B778: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==5527==    by 0xF372E4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2599)
==5527==    by 0xF291FE: execute_ex (zend_vm_execute.h:363)
==5527==    by 0xF29DA1: zend_execute (zend_vm_execute.h:388)
==5527==    by 0xEBEB3F: zend_execute_scripts (zend.c:1341)
==5527==    by 0xDDCAE7: php_execute_script (main.c:2597)
==5527==    by 0x1076456: do_cli (php_cli.c:994)
==5527==    by 0x1077C03: main (php_cli.c:1378)
==5527== 
==5527== Invalid read of size 4
==5527==    at 0xE99920: zval_delref_p (zend.h:411)
==5527==    by 0xE99920: i_zval_ptr_dtor (zend_execute.h:76)
==5527==    by 0xE99920: _zval_ptr_dtor (zend_execute_API.c:424)
==5527==    by 0xED9305: zend_hash_destroy (zend_hash.c:548)
==5527==    by 0xF0DC68: zend_object_std_dtor (zend_objects.c:44)
==5527==    by 0xF0E3CC: zend_objects_free_object_storage (zend_objects.c:137)
==5527==    by 0xF1D8EA: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==5527==    by 0xF1D484: zend_objects_store_del_ref (zend_objects_API.c:178)
==5527==    by 0xEB95AB: _zval_dtor_func (zend_variables.c:57)
==5527==    by 0xE999B1: _zval_dtor (zend_variables.h:35)
==5527==    by 0xE999B1: i_zval_ptr_dtor (zend_execute.h:79)
==5527==    by 0xE999B1: _zval_ptr_dtor (zend_execute_API.c:424)
==5527==    by 0xED6B64: i_zend_hash_bucket_delete (zend_hash.c:182)
==5527==    by 0xED6B64: zend_hash_bucket_delete (zend_hash.c:192)
==5527==    by 0xED9F24: zend_hash_reverse_apply (zend_hash.c:733)
==5527==    by 0xE98AA8: shutdown_destructors (zend_execute_API.c:214)
==5527==    by 0xEBCE6E: zend_call_destructors (zend.c:944)
==5527==  Address 0x153c4070 is 16 bytes inside a block of size 32 free'd
==5527==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==5527==    by 0xE688BC: _efree (zend_alloc.c:2437)
==5527==    by 0xF007F3: gc_collect_cycles (zend_gc.c:846)
==5527==    by 0xEDF18A: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==5527==    by 0xF2B778: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==5527==    by 0xF372E4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2599)
==5527==    by 0xF291FE: execute_ex (zend_vm_execute.h:363)
==5527==    by 0xF29DA1: zend_execute (zend_vm_execute.h:388)
==5527==    by 0xEBEB3F: zend_execute_scripts (zend.c:1341)
==5527==    by 0xDDCAE7: php_execute_script (main.c:2597)
==5527==    by 0x1076456: do_cli (php_cli.c:994)
==5527==    by 0x1077C03: main (php_cli.c:1378)
==5527== 
==5527== Invalid read of size 4
==5527==    at 0xE99A05: zval_refcount_p (zend.h:399)
==5527==    by 0xE99A05: i_zval_ptr_dtor (zend_execute.h:82)
==5527==    by 0xE99A05: _zval_ptr_dtor (zend_execute_API.c:424)
==5527==    by 0xED9305: zend_hash_destroy (zend_hash.c:548)
==5527==    by 0xF0DC68: zend_object_std_dtor (zend_objects.c:44)
==5527==    by 0xF0E3CC: zend_objects_free_object_storage (zend_objects.c:137)
==5527==    by 0xF1D8EA: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==5527==    by 0xF1D484: zend_objects_store_del_ref (zend_objects_API.c:178)
==5527==    by 0xEB95AB: _zval_dtor_func (zend_variables.c:57)
==5527==    by 0xE999B1: _zval_dtor (zend_variables.h:35)
==5527==    by 0xE999B1: i_zval_ptr_dtor (zend_execute.h:79)
==5527==    by 0xE999B1: _zval_ptr_dtor (zend_execute_API.c:424)
==5527==    by 0xED6B64: i_zend_hash_bucket_delete (zend_hash.c:182)
==5527==    by 0xED6B64: zend_hash_bucket_delete (zend_hash.c:192)
==5527==    by 0xED9F24: zend_hash_reverse_apply (zend_hash.c:733)
==5527==    by 0xE98AA8: shutdown_destructors (zend_execute_API.c:214)
==5527==    by 0xEBCE6E: zend_call_destructors (zend.c:944)
==5527==  Address 0x153c4070 is 16 bytes inside a block of size 32 free'd
==5527==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==5527==    by 0xE688BC: _efree (zend_alloc.c:2437)
==5527==    by 0xF007F3: gc_collect_cycles (zend_gc.c:846)
==5527==    by 0xEDF18A: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==5527==    by 0xF2B778: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==5527==    by 0xF372E4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2599)
==5527==    by 0xF291FE: execute_ex (zend_vm_execute.h:363)
==5527==    by 0xF29DA1: zend_execute (zend_vm_execute.h:388)
==5527==    by 0xEBEB3F: zend_execute_scripts (zend.c:1341)
==5527==    by 0xDDCAE7: php_execute_script (main.c:2597)
==5527==    by 0x1076456: do_cli (php_cli.c:994)
==5527==    by 0x1077C03: main (php_cli.c:1378)
==5527== 
==5527== Invalid write of size 1
==5527==    at 0xE99A19: zval_unset_isref_p (zend.h:423)
==5527==    by 0xE99A19: i_zval_ptr_dtor (zend_execute.h:83)
==5527==    by 0xE99A19: _zval_ptr_dtor (zend_execute_API.c:424)
==5527==    by 0xED9305: zend_hash_destroy (zend_hash.c:548)
==5527==    by 0xF0DC68: zend_object_std_dtor (zend_objects.c:44)
==5527==    by 0xF0E3CC: zend_objects_free_object_storage (zend_objects.c:137)
==5527==    by 0xF1D8EA: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==5527==    by 0xF1D484: zend_objects_store_del_ref (zend_objects_API.c:178)
==5527==    by 0xEB95AB: _zval_dtor_func (zend_variables.c:57)
==5527==    by 0xE999B1: _zval_dtor (zend_variables.h:35)
==5527==    by 0xE999B1: i_zval_ptr_dtor (zend_execute.h:79)
==5527==    by 0xE999B1: _zval_ptr_dtor (zend_execute_API.c:424)
==5527==    by 0xED6B64: i_zend_hash_bucket_delete (zend_hash.c:182)
==5527==    by 0xED6B64: zend_hash_bucket_delete (zend_hash.c:192)
==5527==    by 0xED9F24: zend_hash_reverse_apply (zend_hash.c:733)
==5527==    by 0xE98AA8: shutdown_destructors (zend_execute_API.c:214)
==5527==    by 0xEBCE6E: zend_call_destructors (zend.c:944)
==5527==  Address 0x153c4075 is 21 bytes inside a block of size 32 free'd
==5527==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==5527==    by 0xE688BC: _efree (zend_alloc.c:2437)
==5527==    by 0xF007F3: gc_collect_cycles (zend_gc.c:846)
==5527==    by 0xEDF18A: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==5527==    by 0xF2B778: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==5527==    by 0xF372E4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2599)
==5527==    by 0xF291FE: execute_ex (zend_vm_execute.h:363)
==5527==    by 0xF29DA1: zend_execute (zend_vm_execute.h:388)
==5527==    by 0xEBEB3F: zend_execute_scripts (zend.c:1341)
==5527==    by 0xDDCAE7: php_execute_script (main.c:2597)
==5527==    by 0x1076456: do_cli (php_cli.c:994)
==5527==    by 0x1077C03: main (php_cli.c:1378)
==5527== 
==5527== Invalid read of size 1
==5527==    at 0xE99A3B: gc_zval_check_possible_root (zend_gc.h:182)
==5527==    by 0xE99A3B: i_zval_ptr_dtor (zend_execute.h:86)
==5527==    by 0xE99A3B: _zval_ptr_dtor (zend_execute_API.c:424)
==5527==    by 0xED9305: zend_hash_destroy (zend_hash.c:548)
==5527==    by 0xF0DC68: zend_object_std_dtor (zend_objects.c:44)
==5527==    by 0xF0E3CC: zend_objects_free_object_storage (zend_objects.c:137)
==5527==    by 0xF1D8EA: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==5527==    by 0xF1D484: zend_objects_store_del_ref (zend_objects_API.c:178)
==5527==    by 0xEB95AB: _zval_dtor_func (zend_variables.c:57)
==5527==    by 0xE999B1: _zval_dtor (zend_variables.h:35)
==5527==    by 0xE999B1: i_zval_ptr_dtor (zend_execute.h:79)
==5527==    by 0xE999B1: _zval_ptr_dtor (zend_execute_API.c:424)
==5527==    by 0xED6B64: i_zend_hash_bucket_delete (zend_hash.c:182)
==5527==    by 0xED6B64: zend_hash_bucket_delete (zend_hash.c:192)
==5527==    by 0xED9F24: zend_hash_reverse_apply (zend_hash.c:733)
==5527==    by 0xE98AA8: shutdown_destructors (zend_execute_API.c:214)
==5527==    by 0xEBCE6E: zend_call_destructors (zend.c:944)
==5527==  Address 0x153c4074 is 20 bytes inside a block of size 32 free'd
==5527==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==5527==    by 0xE688BC: _efree (zend_alloc.c:2437)
==5527==    by 0xF007F3: gc_collect_cycles (zend_gc.c:846)
==5527==    by 0xEDF18A: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==5527==    by 0xF2B778: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==5527==    by 0xF372E4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2599)
==5527==    by 0xF291FE: execute_ex (zend_vm_execute.h:363)
==5527==    by 0xF29DA1: zend_execute (zend_vm_execute.h:388)
==5527==    by 0xEBEB3F: zend_execute_scripts (zend.c:1341)
==5527==    by 0xDDCAE7: php_execute_script (main.c:2597)
==5527==    by 0x1076456: do_cli (php_cli.c:994)
==5527==    by 0x1077C03: main (php_cli.c:1378)
==5527== 
==5527== Invalid read of size 1
==5527==    at 0xE99A59: gc_zval_check_possible_root (zend_gc.h:182)
==5527==    by 0xE99A59: i_zval_ptr_dtor (zend_execute.h:86)
==5527==    by 0xE99A59: _zval_ptr_dtor (zend_execute_API.c:424)
==5527==    by 0xED9305: zend_hash_destroy (zend_hash.c:548)
==5527==    by 0xF0DC68: zend_object_std_dtor (zend_objects.c:44)
==5527==    by 0xF0E3CC: zend_objects_free_object_storage (zend_objects.c:137)
==5527==    by 0xF1D8EA: zend_objects_store_del_ref_by_handle_ex (zend_objects_API.c:226)
==5527==    by 0xF1D484: zend_objects_store_del_ref (zend_objects_API.c:178)
==5527==    by 0xEB95AB: _zval_dtor_func (zend_variables.c:57)
==5527==    by 0xE999B1: _zval_dtor (zend_variables.h:35)
==5527==    by 0xE999B1: i_zval_ptr_dtor (zend_execute.h:79)
==5527==    by 0xE999B1: _zval_ptr_dtor (zend_execute_API.c:424)
==5527==    by 0xED6B64: i_zend_hash_bucket_delete (zend_hash.c:182)
==5527==    by 0xED6B64: zend_hash_bucket_delete (zend_hash.c:192)
==5527==    by 0xED9F24: zend_hash_reverse_apply (zend_hash.c:733)
==5527==    by 0xE98AA8: shutdown_destructors (zend_execute_API.c:214)
==5527==    by 0xEBCE6E: zend_call_destructors (zend.c:944)
==5527==  Address 0x153c4074 is 20 bytes inside a block of size 32 free'd
==5527==    at 0x4C27C24: free (vg_replace_malloc.c:473)
==5527==    by 0xE688BC: _efree (zend_alloc.c:2437)
==5527==    by 0xF007F3: gc_collect_cycles (zend_gc.c:846)
==5527==    by 0xEDF18A: zif_gc_collect_cycles (zend_builtin_functions.c:361)
==5527==    by 0xF2B778: zend_do_fcall_common_helper_SPEC (zend_vm_execute.h:558)
==5527==    by 0xF372E4: ZEND_DO_FCALL_SPEC_CONST_HANDLER (zend_vm_execute.h:2599)
==5527==    by 0xF291FE: execute_ex (zend_vm_execute.h:363)
==5527==    by 0xF29DA1: zend_execute (zend_vm_execute.h:388)
==5527==    by 0xEBEB3F: zend_execute_scripts (zend.c:1341)
==5527==    by 0xDDCAE7: php_execute_script (main.c:2597)
==5527==    by 0x1076456: do_cli (php_cli.c:994)
==5527==    by 0x1077C03: main (php_cli.c:1378)
==5527== 

 

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