gdb 调试程序 出现不能理解的错误，在线等解决方案

eason_zc

我现在在linux下写一个webserver，最后在接受请求的过程中出现断错误（大概两百次正确的请求就会出现一次这样能的错误导致程序退出），用gdb调试后不能定位到出错的函数，底下是调试过程中的错误信息，麻烦各位帮我看看，到底是什么原因！ 先谢谢了

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb7fecb70 (LWP 15867)]
0x002f5198 in ?? () from /lib/tls/i686/cmov/libc.so.6
(gdb) where
#0  0x002f5198 in ?? () from /lib/tls/i686/cmov/libc.so.6
#1  0x0804b5b3 in CHttpResponse::GetResponseHeader() ()
#2  0x0804b8a4 in CHttpResponse::SendCommonFile(int) ()
#3  0x0804b7f0 in CHttpResponse:rocess(int) ()
#4  0x0804a99d in CContainer::Run(void*) ()
#5  0x080517d2 in CWorkerThread::Run() ()
#6  0x08050128 in CThread::ThreadFunction(void*) ()
#7  0x0013396e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0x0034fa4e in clone () from /lib/tls/i686/cmov/libc.so.6
(gdb) thread
[Current thread is 2 (Thread 0xb7fecb70 (LWP 15867))]
(gdb) info thread
  7 Thread 0xb57e7b70 (LWP 15872)  0x0012d422 in __kernel_vsyscall ()
  6 Thread 0xb5fe8b70 (LWP 15871)  0x0012d422 in __kernel_vsyscall ()
  5 Thread 0xb67e9b70 (LWP 15870)  0x0012d422 in __kernel_vsyscall ()
  4 Thread 0xb6feab70 (LWP 15869)  0x0012d422 in __kernel_vsyscall ()
  3 Thread 0xb77ebb70 (LWP 1586  0x0012d422 in __kernel_vsyscall ()
* 2 Thread 0xb7fecb70 (LWP 15867)  0x002f5198 in ?? ()
   from /lib/tls/i686/cmov/libc.so.6
  1 Thread 0xb7feeb30 (LWP 15866)  0x0012d422 in __kernel_vsyscall ()



还有另外一个错误 SIGPIPE的错误， 这个也很伤阿， 找不出是什么问题， 我都已经屏蔽 SIGPIPE的响应了（signal(SIGPIPE, SIG_IGN);）但是他还是一直出现



Program received signal SIGPIPE, Broken pipe.
[Switching to Thread 0xb6feab70 (LWP 16483)]
0x0012d422 in __kernel_vsyscall ()
(gdb) where
#0  0x0012d422 in __kernel_vsyscall ()
#1  0x0033feab in write () from /lib/tls/i686/cmov/libc.so.6
#2  0x002e91c4 in _IO_file_write () from /lib/tls/i686/cmov/libc.so.6
#3  0x002e8e4f in ?? () from /lib/tls/i686/cmov/libc.so.6
#4  0x002e9166 in _IO_do_write () from /lib/tls/i686/cmov/libc.so.6
#5  0x002ea690 in _IO_file_close_it () from /lib/tls/i686/cmov/libc.so.6
#6  0x002ddae8 in fclose () from /lib/tls/i686/cmov/libc.so.6
#7  0x0804b6cb in CHttpResponse::SendCommonFile(int) ()
#8  0x0804b512 in CHttpResponse:rocess(int) ()
#9  0x0804a95d in CContainer::Run(void*) ()
#10 0x08051596 in CWorkerThread::Run() ()
#11 0x0804feec in CThread::ThreadFunction(void*) ()
#12 0x0013396e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#13 0x0034fa4e in clone () from /lib/tls/i686/cmov/libc.so.6
(gdb) info thread
  7 Thread 0xb57e7b70 (LWP 16486)  0x0012d422 in __kernel_vsyscall ()
  6 Thread 0xb5fe8b70 (LWP 16485)  0x0012d422 in __kernel_vsyscall ()
  5 Thread 0xb67e9b70 (LWP 16484)  0x0012d422 in __kernel_vsyscall ()
* 4 Thread 0xb6feab70 (LWP 16483)  0x0012d422 in __kernel_vsyscall ()
  3 Thread 0xb77ebb70 (LWP 16482)  0x0012d422 in __kernel_vsyscall ()
  2 Thread 0xb7fecb70 (LWP 16481)  0x0012d422 in __kernel_vsyscall ()
  1 Thread 0xb7feeb30 (LWP 16480)  0x0012d422 in __kernel_vsyscall ()
(gdb)

rlingxing

你的是不是多线程程序。

eason_zc

回复 2# rlingxing

是在多线程环境下的， 所以才很伤阿