Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:101624
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: pass (pb1.pair.com: domain gmx.de designates 212.227.15.18 as permitted sender)
To: Sam Ding <samding@ca.ibm.com>
Cc: PHP internals <internals@lists.php.net>,
 Nikita Popov <nikita.ppv@gmail.com>
References: <OF686D5171.19CBDAAE-ON00258218.005B2CDE-85258218.005B9409@notes.na.collabserv.com>
 <CAF+90c8xAUR4zu3fuVHnptEzOEs420nV=sDAa7LKB9TBfPJ1PA@mail.gmail.com>
 <9fb688cf-fa8e-c593-6c2b-f2aa902d4f94@gmx.de>
 <OF532F408D.CE279B45-ON00258219.0058041C-85258219.0058F7BA@notes.na.collabserv.com>
 <78c36512-99e5-ddea-19d4-e962c9016f0b@gmx.de>
 <OFA4F82141.D983751B-ON00258219.0069A2E9-85258219.006A668E@notes.na.collabserv.com>
Message-ID: <445c3125-4b0f-7db7-7891-92b1024cbf3c@gmx.de>
Date: Fri, 19 Jan 2018 01:27:47 +0100
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101
 Thunderbird/52.5.2
MIME-Version: 1.0
In-Reply-To: <OFA4F82141.D983751B-ON00258219.0069A2E9-85258219.006A668E@notes.na.collabserv.com>
Content-Type: text/plain; charset=utf-8
Content-Language: de-DE
Content-Transfer-Encoding: 7bit
Subject: Re: [PHP-DEV] debugging php
From: cmbecker69@gmx.de ("Christoph M. Becker")

On 18.01.2018 at 20:22, Sam Ding wrote:

> "gdb" seems not support php code.
> 
> I run gdb like follows:
> 
>    # gdb ../sapi/cli/php
>    GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-80.el7
>    Copyright (C) 2013 Free Software Foundation, Inc.
>    ...
>    Reading symbols from /home/work/php/php-src/sapi/cli/php...done.
>    (gdb) b bug72300.php:5
>    No source file named bug72300.php.
>    Make breakpoint pending on future shared library load? (y or [n]) y
>    Breakpoint 1 (bug72300.php:5) pending.
>    (gdb) r
>    Starting program: /home/work/php/php-src/case/../sapi/cli/php
>    [Thread debugging using libthread_db enabled]
>    Using host libthread_db library "/lib64/libthread_db.so.1".
> 
> then gdb freezes at this point (/lib64/libthread_db.so.1).
> 
> How to set break point in php and then step by step go into C code?

As far as I know, this is not possible.  You can, however, set a
breakpoint for a certain PHP function (just preprend `zif_` to the PHP
function name; in this case do `b zif_ignore_user_abort`).  To actually
start the debugging, do something like `r
ext/standard/tests/general_functions/bug72300.php`.

Most likely, there are more elegant ways to do this, but I don't know them.

BTW: it seems that your latest mails didn't make it to the list (see
e.g. <https://externals.io/message/101603>) for whatever reason.

-- 
Christoph M. Becker