[英]strtok - buffer overrun
c++ function, strtok() cplusplus.com c ++函数, strtok() cplusplus.com
Will this example suffer from buffer overrun if str is not terminated properly? 如果未正确终止str,此示例是否会遭受缓冲区溢出的困扰?
/* strtok example */
/* source - cplusplus.com (see link below) */
#include <stdio.h>
#include <string.h>
int main ()
{
char str[] ="- This, a sample string.";
char * pch;
printf ("Splitting string \"%s\" into tokens:\n",str);
pch = strtok (str," ,.-");
while (pch != NULL)
{
printf ("%s\n",pch);
pch = strtok (NULL, " ,.-"); // walk the stack?
}
return 0;
}
If str isn't terminated correctly with "\\0", isn't it possible for 如果str不能以“ \\ 0”正确终止,则不可能
pch = strtok (NULL, " ,.-");
to walk the stack? 走栈?
Thanks! 谢谢!
Most string-handling functions will walk off the end if the string is not null-terminated. 如果字符串不是以空字符结尾的,那么大多数字符串处理函数都会走到最后。
However, in your code example, str
is terminated. 但是,在您的代码示例中,
str
被终止。
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