php5-使用gdb CRC不匹配进行调试

Question

我正在尝试学习使用gdb调试php。 附加到php进程后，我收到有关调试php5-mysql，php5-pgsql的符号的错误。 哪里有问题？

# gdb -p 33087
GNU gdb (GDB) 7.4.1-debian
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Attaching to process 33087
Reading symbols from /usr/bin/php5...Reading symbols from /usr/lib/debug/usr/bin/php5...done.
done.
...
Reading symbols from /usr/lib/php5/20100525/pdo.so...Reading symbols from /usr/lib/debug/usr/lib/php5/20100525/pdo.so...done.
done.
Loaded symbols for /usr/lib/php5/20100525/pdo.so
Reading symbols from /usr/lib/php5/20100525/curl.so...Reading symbols from /usr/lib/debug/usr/lib/php5/20100525/curl.so...done.
done.
Reading symbols from /usr/lib/php5/20100525/mcrypt.so...Reading symbols from /usr/lib/debug/usr/lib/php5/20100525/mcrypt.so...done.
done.
...
Reading symbols from /usr/lib/php5/20100525/mysql.so...
warning: the debug information found in "/usr/lib/debug//usr/lib/php5/20100525/mysql.so" does not match "/usr/lib/php5/20100525/mysql.so" (CRC mismatch).


warning: the debug information found in "/usr/lib/debug/usr/lib/php5/20100525/mysql.so" does not match "/usr/lib/php5/20100525/mysql.so" (CRC mismatch).

(no debugging symbols found)...done.
Loaded symbols for /usr/lib/php5/20100525/mysql.so
Reading symbols from /usr/lib/x86_64-linux-gnu/libmysqlclient.so.18...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libmysqlclient.so.18
Reading symbols from /usr/lib/php5/20100525/mysqli.so...
warning: the debug information found in "/usr/lib/debug//usr/lib/php5/20100525/mysqli.so" does not match "/usr/lib/php5/20100525/mysqli.so" (CRC mismatch).


warning: the debug information found in "/usr/lib/debug/usr/lib/php5/20100525/mysqli.so" does not match "/usr/lib/php5/20100525/mysqli.so" (CRC mismatch).

(no debugging symbols found)...done.
Loaded symbols for /usr/lib/php5/20100525/mysqli.so
Reading symbols from /usr/lib/php5/20100525/pdo_mysql.so...
warning: the debug information found in "/usr/lib/debug//usr/lib/php5/20100525/pdo_mysql.so" does not match "/usr/lib/php5/20100525/pdo_mysql.so" (CRC mismatch).


warning: the debug information found in "/usr/lib/debug/usr/lib/php5/20100525/pdo_mysql.so" does not match "/usr/lib/php5/20100525/pdo_mysql.so" (CRC mismatch).

(no debugging symbols found)...done.
Loaded symbols for /usr/lib/php5/20100525/pdo_mysql.so
Reading symbols from /usr/lib/php5/20100525/pdo_pgsql.so...Reading symbols from /usr/lib/debug/usr/lib/php5/20100525/pdo_pgsql.so...done.
done.
Loaded symbols for /usr/lib/php5/20100525/pdo_pgsql.so
Reading symbols from /usr/lib/x86_64-linux-gnu/libpq.so.5...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libpq.so.5
...
0x00007fe63e36b18d in poll () from /lib/x86_64-linux-gnu/libc.so.6
(gdb)

如何修复“警告：”警告：在“ /usr/lib/debug/usr/lib/php5/20100525/mysql.so”中找到的调试信息与“ /usr/lib/php5/20100525/mysql.so”不匹配（CRC不匹配）。”？ 有趣的是，其他php扩展的符号都可以，但仅适用于mysql，mysqli，postgres失败。

Debian Wheezy 7.6 ，所有php软件包都是5.4.41-0+deb7u1 。

Answer 1

如何解决warning: the debug information found in "/usr/lib/debug/usr/lib/php5/20100525/mysql.so" does not match "/usr/lib/php5/20100525/mysql.so" (CRC mismatch).类的错误warning: the debug information found in "/usr/lib/debug/usr/lib/php5/20100525/mysql.so" does not match "/usr/lib/php5/20100525/mysql.so" (CRC mismatch).

该警告告诉您这两个.so库来自的软件包具有不同的版本，您应该更新-dbg软件包以匹配已安装的mysql软件包。

该命令：

dpkg -S /usr/lib/debug/usr/lib/php5/20100525/mysql.so \
  /usr/lib/php5/20100525/mysql.so

会告诉您.so的软件包。 该命令：

dpkg -l <package1> <package2>

会告诉您他们的安装版本。