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This is particularly problematic in C, because an identifier declared as an enumeration constant has type int. ThereforeAs a result, a programmer can accidentally assign an arbitrary integer value to an enum type, as shown in this example.
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Microsoft Visual C++ .NET with /W4 does not warn when assigning an integer value to an enum type, or when the switch statement does not contain all possible values of the enumeration.
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These two practices have now been merged. A switch on an enum type should now contain a case label for each enum value, but should also contain a default label for safety. This is no not more difficult to analyze statically.
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Failing to take into account all possibilities within a logic statement can lead to a corrupted running state, possibly potentially resulting in unintentional information disclosure or abnormal termination.
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