Bug #66076 [Com]: Segfault on SimpleXML toString

Edit report at https://bugs.php.net/bug.php?id=66076&edit=1 ID: 66076 Comment by: mengpg2 at engene dot se Reported by: mengpg2 at engene dot se Summary: Segfault on SimpleXML toString Status: Feedback Type: Bug Package: Reproducible crash Operating System: Linux and MacOS PHP Version: 5.4.21 Block user comment: N Private report: N New Comment: (gdb) bt #0 0x0000000109989f30 in zend_call_method (object_pp=0x7fff68219100, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff682190e8, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:35 #1 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff682191b8, type=6) at zend_object_handlers.c:1534 #2 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff682191b8, use_copy=0x7fff682191b4) at zend.c:261 #3 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb67778) at zend_vm_execute.h:27329 #4 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #5 0x000000010994c1a1 in zend_call_function (fci=0x7fff68219508, fci_cache=0x7fff68219490) at zend_execute_API.c:956 #6 0x000000010998a342 in zend_call_method (object_pp=0x7fff68219660, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff68219648, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #7 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff68219718, type=6) at zend_object_handlers.c:1534 #8 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff68219718, use_copy=0x7fff68219714) at zend.c:261 #9 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb67508) at zend_vm_execute.h:27329 #10 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #11 0x000000010994c1a1 in zend_call_function (fci=0x7fff68219a68, fci_cache=0x7fff682199f0) at zend_execute_API.c:956 #12 0x000000010998a342 in zend_call_method (object_pp=0x7fff68219bc0, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff68219ba8, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #13 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff68219c78, type=6) at zend_object_handlers.c:1534 #14 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff68219c78, use_copy=0x7fff68219c74) at zend.c:261 #15 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb67298) at zend_vm_execute.h:27329 #16 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #17 0x000000010994c1a1 in zend_call_function (fci=0x7fff68219fc8, fci_cache=0x7fff68219f50) at zend_execute_API.c:956 #18 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821a120, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821a108, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #19 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821a1d8, type=6) at zend_object_handlers.c:1534 #20 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821a1d8, use_copy=0x7fff6821a1d4) at zend.c:261 #21 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb67028) at zend_vm_execute.h:27329 #22 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #23 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821a528, fci_cache=0x7fff6821a4b0) at zend_execute_API.c:956 #24 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821a680, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821a668, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #25 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821a738, type=6) at zend_object_handlers.c:1534 ---Type <return> to continue, or q <return> to quit--- #26 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821a738, use_copy=0x7fff6821a734) at zend.c:261 #27 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb66db8) at zend_vm_execute.h:27329 #28 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #29 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821aa88, fci_cache=0x7fff6821aa10) at zend_execute_API.c:956 #30 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821abe0, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821abc8, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #31 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821ac98, type=6) at zend_object_handlers.c:1534 #32 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821ac98, use_copy=0x7fff6821ac94) at zend.c:261 #33 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb66b48) at zend_vm_execute.h:27329 #34 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #35 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821afe8, fci_cache=0x7fff6821af70) at zend_execute_API.c:956 #36 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821b140, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821b128, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #37 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821b1f8, type=6) at zend_object_handlers.c:1534 #38 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821b1f8, use_copy=0x7fff6821b1f4) at zend.c:261 #39 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb668d8) at zend_vm_execute.h:27329 #40 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #41 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821b548, fci_cache=0x7fff6821b4d0) at zend_execute_API.c:956 #42 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821b6a0, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821b688, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #43 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821b758, type=6) at zend_object_handlers.c:1534 #44 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821b758, use_copy=0x7fff6821b754) at zend.c:261 #45 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb66668) at zend_vm_execute.h:27329 #46 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #47 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821baa8, fci_cache=0x7fff6821ba30) at zend_execute_API.c:956 #48 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821bc00, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821bbe8, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #49 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821bcb8, type=6) at zend_object_handlers.c:1534 #50 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821bcb8, use_copy=0x7fff6821bcb4) at zend.c:261 #51 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb663f8) at zend_vm_execute.h:27329 #52 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #53 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821c008, fci_cache=0x7fff6821bf90) at zend_execute_API.c:956 ---Type <return> to continue, or q <return> to quit--- #54 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821c160, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821c148, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #55 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821c218, type=6) at zend_object_handlers.c:1534 #56 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821c218, use_copy=0x7fff6821c214) at zend.c:261 #57 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb66188) at zend_vm_execute.h:27329 #58 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #59 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821c568, fci_cache=0x7fff6821c4f0) at zend_execute_API.c:956 #60 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821c6c0, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821c6a8, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #61 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821c778, type=6) at zend_object_handlers.c:1534 #62 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821c778, use_copy=0x7fff6821c774) at zend.c:261 #63 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb65f18) at zend_vm_execute.h:27329 #64 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #65 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821cac8, fci_cache=0x7fff6821ca50) at zend_execute_API.c:956 #66 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821cc20, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821cc08, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #67 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821ccd8, type=6) at zend_object_handlers.c:1534 #68 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821ccd8, use_copy=0x7fff6821ccd4) at zend.c:261 #69 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb65ca8) at zend_vm_execute.h:27329 #70 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #71 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821d028, fci_cache=0x7fff6821cfb0) at zend_execute_API.c:956 #72 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821d180, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821d168, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #73 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821d238, type=6) at zend_object_handlers.c:1534 #74 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821d238, use_copy=0x7fff6821d234) at zend.c:261 #75 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb65a38) at zend_vm_execute.h:27329 #76 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #77 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821d588, fci_cache=0x7fff6821d510) at zend_execute_API.c:956 #78 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821d6e0, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821d6c8, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #79 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821d798, type=6) at zend_object_handlers.c:1534 ---Type <return> to continue, or q <return> to quit--- #80 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821d798, use_copy=0x7fff6821d794) at zend.c:261 #81 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb657c8) at zend_vm_execute.h:27329 #82 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #83 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821dae8, fci_cache=0x7fff6821da70) at zend_execute_API.c:956 #84 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821dc40, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821dc28, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #85 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821dcf8, type=6) at zend_object_handlers.c:1534 #86 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821dcf8, use_copy=0x7fff6821dcf4) at zend.c:261 #87 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb65558) at zend_vm_execute.h:27329 #88 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #89 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821e048, fci_cache=0x7fff6821dfd0) at zend_execute_API.c:956 #90 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821e1a0, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821e188, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #91 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821e258, type=6) at zend_object_handlers.c:1534 #92 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821e258, use_copy=0x7fff6821e254) at zend.c:261 #93 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb652e8) at zend_vm_execute.h:27329 #94 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #95 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821e5a8, fci_cache=0x7fff6821e530) at zend_execute_API.c:956 #96 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821e700, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821e6e8, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #97 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821e7b8, type=6) at zend_object_handlers.c:1534 #98 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821e7b8, use_copy=0x7fff6821e7b4) at zend.c:261 #99 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb65078) at zend_vm_execute.h:27329 #100 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #101 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821eb08, fci_cache=0x7fff6821ea90) at zend_execute_API.c:956 #102 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821ec60, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821ec48, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #103 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821ed18, type=6) at zend_object_handlers.c:1534 #104 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821ed18, use_copy=0x7fff6821ed14) at zend.c:261 #105 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb44c50) at zend_vm_execute.h:27329 #106 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #107 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821f068, fci_cache=0x7fff6821eff0) at zend_execute_API.c:956 ---Type <return> to continue, or q <return> to quit--- #108 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821f1c0, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821f1a8, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #109 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821f278, type=6) at zend_object_handlers.c:1534 #110 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821f278, use_copy=0x7fff6821f274) at zend.c:261 #111 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb449e0) at zend_vm_execute.h:27329 #112 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #113 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821f5c8, fci_cache=0x7fff6821f550) at zend_execute_API.c:956 #114 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821f720, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821f708, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #115 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821f7d8, type=6) at zend_object_handlers.c:1534 #116 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821f7d8, use_copy=0x7fff6821f7d4) at zend.c:261 #117 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb44770) at zend_vm_execute.h:27329 #118 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #119 0x000000010994c1a1 in zend_call_function (fci=0x7fff6821fb28, fci_cache=0x7fff6821fab0) at zend_execute_API.c:956 #120 0x000000010998a342 in zend_call_method (object_pp=0x7fff6821fc80, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff6821fc68, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 #121 0x00000001099a049a in zend_std_cast_object_tostring (readobj=0x10b1f3d70, writeobj=0x7fff6821fd38, type=6) at zend_object_handlers.c:1534 #122 0x000000010995f88a in zend_make_printable_zval (expr=0x10b1f3d70, expr_copy=0x7fff6821fd38, use_copy=0x7fff6821fd34) at zend.c:261 #123 0x00000001099b22b6 in ZEND_CAST_SPEC_CV_HANDLER (execute_data=0x10bb44500) at zend_vm_execute.h:27329 #124 0x00000001099a48b7 in execute (op_array=0x10b47bb98) at zend_vm_execute.h:410 #125 0x000000010994c1a1 in zend_call_function (fci=0x7fff68220088, fci_cache=0x7fff68220010) at zend_execute_API.c:956 #126 0x000000010998a342 in zend_call_method (object_pp=0x7fff682201e0, obj_ce=0x10b477df8, fn_proxy=0x10b477f60, function_name=0x109e41850 "__tostring", function_name_len=10, retval_ptr_ptr=0x7fff682201c8, param_count=0, arg1=0x0, arg2=0x0) at zend_interfaces.c:97 .....thousands of rows Previous Comments: ------------------------------------------------------------------------ [2013-11-11 03:50:08] laruence@php.net Thank you for this bug report. To properly diagnose the problem, we need a backtrace to see what is happening behind the scenes. To find out how to generate a backtrace, please read http://bugs.php.net/bugs-generating-backtrace.php for *NIX and http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32 Once you have generated a backtrace, please submit it to this bug report and change the status back to "Open". Thank you for helping us make PHP better. ------------------------------------------------------------------------ [2013-11-11 02:04:23] mengpg2 at engene dot se This seems related to bug 62328. I undoed that patch which fixed my problem but gave me a... ===================================================================== FAILED TEST SUMMARY --------------------------------------------------------------------- Bug #62328 (implementing __toString and a cast to string fails) [ext/xml/tests/bug62328.phpt] ===================================================================== ------------------------------------------------------------------------ [2013-11-11 01:25:46] mengpg2 at engene dot se Description: ------------ Hi, I use far too old PHP libs for AWS and when upgrading from 5.3 to 5.4.21 I noticed that the string typecast made the entire PHP process segfault $DDB = new AmazonDynamoDB(); $DDB->use_ssl = false; $Key = array('HashKeyElement' => array(AmazonDynamoDB::TYPE_NUMBER => (string)$itemid)); $Res = $DDB->get_item(array('TableName' => 'pond_item_meta', 'Key' => $Key)); $tt = (string)$Res->body->Item->exif_json->S; [Mon Nov 11 02:02:07 2013] [notice] child pid 27086 exit signal Segmentation fault (11) However, if I undo the patch between 5.4.6 and 5.4.7 in Zend/zend.c it works. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=66076&edit=1