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Noncompliant Code Example (Struct)
Wiki Markup length}}). Each item is given an index in the array, and the value for that index is the stock of that item. Adding a new item would increase {{length}} in the struct. Stocking more of an item would increase the value for that item's index. For example, if 5 books and 2 erasers were in stock, the inventory would be {{stockOfItem\[0\] = 5}} and {{stockOfItem\[1\] = 2}}, assuming books were index 0 and erasers were index 1.
The problem arises in this setup when no items are being stocked. getStock would recognize that length = 0 and thus would return NULL. In this noncompliant code example, erroneous behavior results from getStock returning NULL while main neglects to check for such a value. This results in an abnormal program termination after returning to the main function.
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Search for vulnerabilities resulting from the violation of this guideline on the CERT website.
Bibliography
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