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This diagnostic rule is based on the software development guidelines developed by MISRA (Motor Industry Software Reliability Association).
The analyzer has detected a non-unique value among implicitly initialized enumeration elements, which leads to creation of duplicate constant values.
Here is an example of incorrect code:
enum Suits
{
SUITS_SPADES = 1,
SUITS_CLUBS,
SUITS_DIAMONDS,
SUITS_HEARTS,
SUITS_UNKNOWN = 4
};The way the constants are initialized here results in assigning the same values to the elements 'SUITS_HEARTS' and 'SUITS_UNKNOWN'. It is not clear if this was done on purpose or by mistake.
To avoid errors like that, make sure you explicitly initialize all enumeration elements that have non-unique values:
enum Suits
{
SUITS_SPADES = 1,
SUITS_CLUBS,
SUITS_DIAMONDS,
SUITS_HEARTS = 4,
SUITS_UNKNOWN = 4
};This diagnostic rule is classified as:
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