http://jackxiang.com/index.php zh-cn http://jackxiang.com/post// jack <xdy108@126.com> Fri, 05 Dec 2014 06:36:16 +0000 http://jackxiang.com/post// 这里使用ulimit -c unlimited来开启core文件，使用gdb来对core文件进行调试演示一下。

root@debian:~/php# php a.php 段错误 root@debian:~/php# ulimit -c unlimited root@debian:~/php# php a.php 段错误 (core dumped) root@debian:~/php# ls a.php  core root@debian:~/php# apt-get install gdb root@debian:~/php# gdb php -c core Core was generated by `php a.php'. Program terminated with signal 11, Segmentation fault. #0  0xb6a7bfb8 in zif_smtpmail_connect (ht=5, return_value=0xb6f149dc, return_value_ptr=0x0, this_ptr=0x0, return_value_used=1) at /root/php/php-5.4.7/ext/smtpmail/smtpmail.c:281 281             if(strcmp(substring(lastmessage, 1, 3), hen) !=0 || strlen(lastmessage)==0) { (gdb) (gdb) source ./php-5.4.7/.gdbinit (gdb) zbacktrace [0xb6efb030] smtpmail_connect("smtp.qq.com", "xxxx", "xxx", "xxxx@qq.com", 25) /root/php/a.php:5

从上面可以看出报错的是smtpmail.c文件的281行,php调用处是a.php的第5行。
参考文章
http://www.laruence.com/2011/06/23/2057.html
http://www.laruence.com/2011/12/06/2381.html
http://tech.ccidnet.com/art/3067/20100207/1996485_1.html
http://www.laruence.com/2008/08/12/164.html
http://www.laruence.com/2008/08/26/463.html
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