php5-使用gdb CRC不匹配進行調試

Question

我正在嘗試學習使用gdb調試php。 附加到php進程后，我收到有關調試php5-mysql，php5-pgsql的符號的錯誤。 哪里有問題？

# 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)

如何修復“警告：”警告：在“ /usr/lib/debug/usr/lib/php5/20100525/mysql.so”中找到的調試信息與“ /usr/lib/php5/20100525/mysql.so”不匹配（CRC不匹配）。”？ 有趣的是，其他php擴展的符號都可以，但僅適用於mysql，mysqli，postgres失敗。

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

Answer 1

如何解決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).類的錯誤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).

該警告告訴您這兩個.so庫來自的軟件包具有不同的版本，您應該更新-dbg軟件包以匹配已安裝的mysql軟件包。

該命令：

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

會告訴您.so的軟件包。 該命令：

dpkg -l <package1> <package2>

會告訴您他們的安裝版本。