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[2001-07-11 09:28 UTC] nassar at wpi dot edu
PHP is crashing on a call to an object method. Currently,
the code is too complex to paste here. Will try to create
simpler example. Here's a gdb backtrace:
# gdb /usr/sbin/apache.dbg
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This GDB was configured as "i686-pc-linux-gnu"...
(gdb) run -X
Starting program: /usr/sbin/apache.dbg -X
Program received signal SIGSEGV, Segmentation fault.
0x40267713 in execute (op_array=0x8237f04) at
../../Zend/zend_execute.c:1140
1140
zend_fetch_var_address(&opline->result, &opline->op1,
&opline->op2, Ts, BP_VAR_W ELS_CC);
(gdb) bt
#0 0x40267713 in execute (op_array=0x8237f04)
at ../../Zend/zend_execute.c:1140
#1 0x40269f0f in execute (op_array=0x8237f04)
at ../../Zend/zend_execute.c:1544
#2 0x40269f0f in execute (op_array=0x8237f04)
at ../../Zend/zend_execute.c:1544
#3 0x40269f0f in execute (op_array=0x8237f04)
at ../../Zend/zend_execute.c:1544
#4 0x40269f0f in execute (op_array=0x8237f04)
at ../../Zend/zend_execute.c:1544
#5 0x40269f0f in execute (op_array=0x8237f04)
at ../../Zend/zend_execute.c:1544
#6 0x40269f0f in execute (op_array=0x8237f04)
at ../../Zend/zend_execute.c:1544
#7 0x40269f0f in execute (op_array=0x8237f04)
at ../../Zend/zend_execute.c:1544
#8 0x40269f0f in execute (op_array=0x8237f04)
at ../../Zend/zend_execute.c:1544
#9 0x40269f0f in execute (op_array=0x8237f04)
at ../../Zend/zend_execute.c:1544
#10 0x40269f0f in execute (op_array=0x8237f04)
at ../../Zend/zend_execute.c:1544
#11 0x40269f0f in execute (op_array=0x8237f04)
---Type <return> to continue, or q <return> to quit---q
at ../../Zend/zend_execute.c:1544Quit
(gdb) p opline
$1 = (zend_op *) 0x823de5c
(gdb) p *optline
$2 = {opcode = 83 'S', result = {op_type = 4, u = {constant
= {value = {
lval = 0, dval = 0, str = {val = 0x0, len = 0}, ht
= 0x0, obj = {
ce = 0x0, properties = 0x0}}, type = 0 '\000',
is_ref = 0 '\000',
refcount = 0}, var = 0, opline_num = 0, fetch_type = 0,
op_array = 0x0, EA = {var = 0, type = 0}}}, op1 =
{op_type = 1, u = {
constant = {value = {lval = 136544148, dval =
1.0677440727493824e-313,
str = {val = 0x8237f94 "other", len = 5}, ht =
0x8237f94, obj = {
ce = 0x8237f94, properties = 0x5}}, type = 3
'\003',
is_ref = 1 '\001', refcount = 2}, var = 136544148,
opline_num = 136544148, fetch_type = 136544148,
op_array = 0x8237f94,
EA = {var = 136544148, type = 5}}}, op2 = {op_type =
8, u = {constant = {
value = {lval = 1, dval = 4.9406564584124654e-324,
str = {
val = 0x1 <Address 0x1 out of bounds>, len = 0},
ht = 0x1, obj = {
ce = 0x1, properties = 0x0}}, type = 0 '\000',
is_ref = 0 '\000',
refcount = 0}, var = 1, opline_num = 1, fetch_type = 1,
op_array = 0x1, EA = {var = 1, type = 0}}},
extended_value = 0,
lineno = 1056}
(gdb)
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Last updated: Wed Nov 05 10:00:02 2025 UTC |
This code reproduces the crash: class A{} class B extends A {} class D extends C { function zoom() { return (parent::zoom()); } } class E extends D {} class C extends B { function C() { $this->x = 5; } } class Storage { var $items; function Storage() { $this->items=array(); } function add() { $foo = new E(); $this->items[] = $foo; end($this->items); return key($this->items); } function get($who) { return $this->items[$who]; } } $Store = new Storage(); $ID = $Store->add(); $Obj = $Store->get($ID); //Segfaults here $Obj->zoom();