/*
* gcc gdb_test.c -o gdb_test -g
* ./gdb_test
* Segmentation fault (core dumped)
* gdb gdb_test -c core.5521
* Core was generated by `gdb_test'.
* Program terminated with signal 11, Segmentation fault.
* #0 0x000000000040048b in main (argc=1, argv=0x7fff00c0b438) at gdb_test.c:18
* 18 *ptr='\n';
*/
#include<stdio.h>
#include<stdlib.h>
#include<unistd.h>
int main(const int argc,const char *argv[])
{
char *ptr=NULL;
*ptr='\n';
return 0;
}
/*
* add follow in the ~/.bashrc file to generate core file
* ulimit -c unlimited
*/原文：http://blog.csdn.net/adream307/article/details/43742535