strtok出现:Segmentation fault

code：

31 char *buf1 = "aaa,bbb";
 32 char* token = strtok( buf1, ",");
 33 while( token != NULL )
 34 {
 35 printf( "%s ", token );
 36 token = strtok( NULL, ",-|");
 37 }

编译正常
运行错误：Segmentation fault
调试：
    在line32 char* token = strtok( buf1, ",");
Program received signal SIGSEGV, Segmentation fault.
0x00551df7 in strtok () from /lib/libc.so.6

原因分析：
man strtok

发现：BUGS
       Avoid using these functions.  If you do use them, note that:

              These functions modify their first argument.

              These functions cannot be used on constant strings.

              The identity of the delimiting character is lost.

              The  strtok()  function  uses a static buffer while parsing, so it's not thread safe. Use strtok_r() if this matters to you.


因为 buf1 是一个常量，所以出错了；

代码修改：

31 char buf1[] = "aaa,bbb";
 32 char* token = strtok( buf1, ",");
 33 while( token != NULL )
 34 {

正确了！！！