In my database, some of the table is named in Chinese, when I use mongodump export these tables, mongodump reported "Failed: "rrkd_activity.coupon_receive_支付宝迎新" contains a path separator '支' and can't be dumped to the filesystem.

After my analysis, this error occurred in the checkStringForPathSeparator () function of mongodump.

func checkStringForPathSeparator(s string, c *rune) bool {
         for _, *c = range s {
                   if os.IsPathSeparator(uint8(*c)) {
                            return true
                   }
         }
         return false
}

In this function, we call IsPathSeparator () function to determine if the character contains the path separator, but if c is a Chinese, such as "支", his unicode is encoded as \u652f, If only intercepted 8 bits, it coincides with the code of "/", so the "支" is misjudged as the path separator.

The following is the test program:

func main() {
         var c rune
         c = '支'
         println(c)
         println(uint8(c))
         c = '/'
         println(c)
}

The result is:
25903
47
47