因为dwarf2
原有的代码做了部分修改，再调试的时，p某个变量出现"dwarf2_read_address: Corrupted DWARF expression"错误，在网上搜了一下，是由于gdb的bug导致的，该bug已在GDB 6.7及以上版本修复。测试服务器上的版本刚好是6.5，不得不升级一下gdb了，这年头连GDB都靠
原有的代码做了部分修改，再调试的时，p某个变量出现"dwarf2_read_address: Corrupted DWARF expression"错误，在网上搜了一下，是由于gdb的bug导致的，该bug已在GDB 6.7及以上版本修复。测试服务器上的版本刚好是6.5，不得不升级一下gdb了，这年头连GDB都靠不住啊。
在http://www.gnu.org/software/gdb/上找到最新的7.2版本，下载，解压缩，一路./configure->make->make install后，用gdb -v看了一下版本，竟然还是6.5。查了下GDB的默认安装目录是/usr/loca/bin，export命令查看了下我机器默认的环境变量是/usr/bin，于是备份旧版本的gdb程序后，将usr/loca/bin下新的gdb可执行程序复制过去。gdb -v终于显示版本7.2。调试一下程序，原来的bug不见了。
done
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