CWE-834 (过度迭代) — Vulnerability Class 22

void do_something_recursive (int flg) { ... // Do some real work here, but the value of flg is unmodified if (flg) { do_something_recursive (flg); }    // flg is never modified so it is always TRUE - this call will continue until the stack explodes } int flag = 1; // Set to TRUE do_something_recursive (flag);

void do_something_recursive (int flg) { ... // Do some real work here // Modify value of flg on done condition if (flg) { do_something_recursive (flg); }    // returns when flg changes to 0 } int flag = 1; // Set to TRUE do_something_recursive (flag);

public boolean isReorderNeeded(String bookISBN, int rateSold) { boolean isReorder = false; int minimumCount = 10; int days = 0; // get inventory count for book int inventoryCount = inventory.getIventoryCount(bookISBN); // find number of days until inventory count reaches minimum while (inventoryCount > minimumCount) { inventoryCount = inventoryCount - rateSold; days++; } // if number of days within reorder timeframe // set reorder return boolean to true if (days > 0 && days < 5) { isReorder = true; } return isReorder; }

public boolean isReorderNeeded(String bookISBN, int rateSold) { ... // validate rateSold variable if (rateSold < 1) { return isReorder; } ... }