Bug #72832 [Com]: declare(ticks=1) and register_tick_function() together cause PHP7 to seg fault
Edit report at https://bugs.php.net/bug.php?id=72832&edit=1
ID: 72832
Comment by: brandon at ambitious dot tech
Reported by: brandon at ambitious dot tech
Summary: declare(ticks=1) and register_tick_function()
together cause PHP7 to seg fault
Status: Feedback
Type: Bug
Package: Unknown/Other Function
Operating System: Gentoo
PHP Version: 7.0.9
Block user comment: N
Private report: N
New Comment:
I disabled multi-threading, and the code worked just fine. I tried PHP cli, and it worked just fine
there as well. After re-enabling threading, I found that the code doesn't work in Apache,
however, it does work when run from the PHP cli.
Also, I'm not able to disable threading in just Apache or PHP with Gentoo, so I'm not sure
if the bug is being caused by Apache's threading or PHP's threading. If there's
anything else you need, let me know.
Previous Comments:
------------------------------------------------------------------------
[2016-08-14 21:06:14] kalle@php.net
Is this only for Apache, and does this happen in non-TS builds? I remember back in 5.3 we did have
some improvements to make ticks work in TS environments, but it could be a regression from 5.x
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[2016-08-14 09:42:59] brandon at ambitious dot tech
Description:
------------
PHP version: 7.0.9-r2
Configure line: './configure' '--prefix=/usr'
'--build=x86_64-pc-linux-gnu' '--host=x86_64-pc-linux-gnu'
'--mandir=/usr/share/man' '--infodir=/usr/share/info'
'--datadir=/usr/share' '--sysconfdir=/etc' '--localstatedir=/var/lib'
'--docdir=/usr/share/doc/php-7.0.9-r2'
'--htmldir=/usr/share/doc/php-7.0.9-r2/html' '--prefix=/usr/lib64/php7.0'
'--mandir=/usr/lib64/php7.0/man' '--infodir=/usr/lib64/php7.0/info'
'--libdir=/usr/lib64/php7.0/lib' '--with-libdir=lib64'
'--localstatedir=/var' '--without-pear' '--enable-maintainer-zts'
'--disable-bcmath' '--with-bz2=/usr' '--disable-calendar'
'--enable-ctype' '--without-curl' '--disable-dom'
'--without-enchant' '--disable-exif' '--disable-fileinfo'
'--disable-filter' '--disable-ftp' '--with-gettext=/usr'
'--without-gmp' '--enable-hash' '--without-mhash'
'--with-iconv' '--disable-intl' '--disable-ipv6'
'--enable-json' '--without-kerberos' '--disable-libxml'
'--without-libxml-dir' '--enable-mbstring' '--with-mcrypt=/usr'
'--with-onig=/us!
r' '--with-openssl=/usr' '--with-openssl-dir=/usr'
'--disable-pcntl' '--disable-phar' '--enable-pdo'
'--disable-opcache' '--without-pgsql' '--enable-posix'
'--without-pspell' '--without-recode' '--disable-simplexml'
'--disable-shmop' '--without-snmp' '--disable-soap'
'--disable-sockets' '--without-sqlite3' '--disable-sysvmsg'
'--disable-sysvsem' '--disable-sysvshm' '--without-fpm-systemd'
'--without-tidy' '--disable-tokenizer' '--disable-wddx'
'--disable-xml' '--disable-xmlreader' '--disable-xmlwriter'
'--without-xmlrpc' '--without-xsl' '--disable-zip'
'--with-zlib=/usr' '--disable-debug' '--enable-dba'
'--without-cdb' '--with-db4=/usr' '--disable-flatfile'
'--without-gdbm' '--disable-inifile' '--without-qdbm'
'--without-freetype-dir' '--disable-gd-jis-conv' '--without-jpeg-dir'
'--without-png-dir' '--without-xpm-dir' '--without-gd'
'--without-interbase' '--without-mysqli'
'--with-mysql-sock=/var/run/mysqld/mysqld.sock' '--without-unixODBC'
'--without-iodbc' '--without-oci8!
' '--without-pdo-dblib' '--with-pdo-mysql=mysqlnd' '--without-!
pdo-pgsql' '--without-pdo-sqlite' '--without-pdo-firebird'
'--without-pdo-odbc' '--without-pdo-oci' '--with-readline=/usr'
'--without-libedit' '--without-mm' '--with-pic'
'--with-pcre-regex=/usr' '--with-pcre-dir=/usr'
'--with-config-file-path=/etc/php/apache2-php7.0'
'--with-config-file-scan-dir=/etc/php/apache2-php7.0/ext-active'
'--disable-embed' '--disable-cli' '--disable-cgi'
'--disable-fpm' '--with-apxs2=/usr/bin/apxs' '--disable-phpdbg'
'build_alias=x86_64-pc-linux-gnu' 'host_alias=x86_64-pc-linux-gnu'
'CPPFLAGS='
Basically, the declare(ticks=1); line and register_tick_function line
together cause PHP to throw a segmentation fault. Having just one line or the other works as
expected. The function passed to register_ticks_function() doesn't seem to make any difference.
I'm almost entirely sure PHP is throwing a seg fault because the Apache error logs say
"AH00052: child pid YYYYY exit signal Segmentation fault (11)
Test script:
---------------
<?php
declare(ticks=1);
$ticks = 0;
register_tick_function(
function() use (&$ticks){
$ticks++;
}
);
var_dump($ticks);
Expected result:
----------------
The result above should dump 0 or an int counting the number of ticks it takes ti run the code.
Actual result:
--------------
The actual result is that the web browser claims the page was reset and nothing is ever loaded.
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--
Edit this bug report at https://bugs.php.net/bug.php?id=72832&edit=1
Thread (5 messages)