Edit report at https://bugs.php.net/bug.php?id=62084&edit=1
ID: 62084
Updated by: fel...@php.net
Reported by: victor dot kupriyanov at gmail dot com
Summary: Segfault during inheritance check on method
-Status: Open
+Status: Feedback
Type: Bug
Package: *Compile Issues
Operating System: Any
PHP Version: 5.4.3
Block user comment: N
Private report: N
New Comment:
I can't reproduce it. Try disabling the xdebug and testing it again.
Previous Comments:
------------------------------------------------------------------------
[2012-05-21 02:27:31] victor dot kupriyanov at gmail dot com
Description:
------------
When inherited method has different type hinting information for the method
parameters and E_STRICT error reporting level is set - PHP tries to report
method declaration incompatibility and segfaults on attempt to dereference a
null pointer.
Test script:
---------------
<?php
class A {}
class B {
public function b(A $a) {}
}
class C extends B {
public function b($a) {}
}
$a = new C();
Expected result:
----------------
Valid message explaining that inherited method has a different signature.
Actual result:
--------------
$ php a.php
Segmentation fault (core dumped)
...
(gdb) bt
#0 zend_get_function_declaration (fptr=0x0)
at /usr/src/debug/php-5.4.3/Zend/zend_compile.c:3046
#1 0x00000000005a2479 in do_inheritance_check_on_method (child=
0x7ffff7fc3558, parent=0x7ffff7fc3f18)
at /usr/src/debug/php-5.4.3/Zend/zend_compile.c:3267
#2 0x00000000005a2665 in do_inherit_method_check (
child_function_table=<value optimized out>, parent=<value optimized out>,
hash_key=<value optimized out>, child_ce=0x7ffff7fc3310)
at /usr/src/debug/php-5.4.3/Zend/zend_compile.c:3288
#3 0x00000000005d3cf1 in zend_hash_replace_checker_wrapper (target=
0x7ffff7fc3338, source=<value optimized out>, pCopyConstructor=
0x5a7bc0 <do_inherit_method>, size=240, pMergeSource=
0x5a2620 <do_inherit_method_check>, pParam=0x7ffff7fc3310)
at /usr/src/debug/php-5.4.3/Zend/zend_hash.c:878
#4 zend_hash_merge_ex (target=0x7ffff7fc3338, source=<value optimized out>,
pCopyConstructor=0x5a7bc0 <do_inherit_method>, size=240, pMergeSource=
0x5a2620 <do_inherit_method_check>, pParam=0x7ffff7fc3310)
at /usr/src/debug/php-5.4.3/Zend/zend_hash.c:892
#5 0x00000000005a850b in zend_do_inheritance (ce=0x7ffff7fc3310, parent_ce=
0x7ffff7fc2ff8) at /usr/src/debug/php-5.4.3/Zend/zend_compile.c:3519
#6 0x00000000005a962c in do_bind_inherited_class (
op_array=<value optimized out>, opline=<value optimized out>, class_table=
0xdf4c30, parent_ce=0x7ffff7fc2ff8, compile_time=1 '\001')
at /usr/src/debug/php-5.4.3/Zend/zend_compile.c:4569
#7 0x00000000005a985a in zend_do_early_binding ()
at /usr/src/debug/php-5.4.3/Zend/zend_compile.c:4626
#8 0x000000000058c1ca in zendparse ()
at /usr/src/debug/php-5.4.3/Zend/zend_language_parser.c:3547
#9 0x000000000058fa0d in compile_file (file_handle=0x7fffffffdec0,
type=<value optimized out>) at Zend/zend_language_scanner.l:579
#10 0x00007fffeb6d4042 in phar_compile_file (file_handle=0x7fffffffdec0, type=
8) at /usr/src/debug/php-5.4.3/ext/phar/phar.c:3391
#11 0x00007ffff1d8101d in xdebug_compile_file (
file_handle=<value optimized out>, type=<value optimized out>)
at /usr/src/debug/php-pecl-xdebug-2.2.0/xdebug-2.2.0/xdebug.c:1537
#12 0x00000000005c70ca in zend_execute_scripts (type=8, retval=0x0, file_count=
3) at /usr/src/debug/php-5.4.3/Zend/zend.c:1264
#13 0x0000000000566cc3 in php_execute_script (primary_file=0x7fffffffdec0)
at /usr/src/debug/php-5.4.3/main/main.c:2473
#14 0x0000000000672395 in do_cli (argc=2, argv=0x7fffffffe1f8)
at /usr/src/debug/php-5.4.3/sapi/cli/php_cli.c:983
#15 0x0000000000672cbc in main (argc=2, argv=0x7fffffffe1f8)
at /usr/src/debug/php-5.4.3/sapi/cli/php_cli.c:1356
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=62084&edit=1
