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Furthermore, the definition of programmer-defined types may change, which creates a problem when these types are used with formatted output functions, such as printf(), and formatted input functions, such as scanf(). (See FIO00FIO47-C. Take care when creating Use valid format strings.)
The C intmax_t and uintmax_t types can represent any value representable by any other integer types of the same signedness. (See INT00-C. Understand the data model used by your implementation(s).) This capability allows conversion between programmer-defined integer types (of the same signedness) and intmax_t and uintmax_t:
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Noncompliant Code Example (scanf())
The following This noncompliant code example reads an unsigned long long value from standard input and stores the result in x, which is of a programmer-defined integer type:
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Related Vulnerabilities
Search for vulnerabilities resulting from the violation of this rule on the CERT website.
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