
...
Unlike the basic for
statement, assignments to the loop variable fail to affect the loop's iteration order or the iterated collection or array. . Consequently, an assignment to the loop variable is equivalent to modifying a variable local to the loop body whose initial value is the object referenced by the loop iterator. This modification is not necessarily erroneous but can obscure the loop functionality or indicate a misunderstanding of the underlying implementation of the enhanced for
statement.
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Assignments to the loop variable of an enhanced for
loop (for-each
idiom) fail to affect the overall iteration order or the iterated collection or array. This can lead lead to programmer confusion, and can leave data in a fragile or inconsistent state.
Rule | Severity | Likelihood | Detectable | Remediation CostRepairable | Priority | Level |
---|---|---|---|---|---|---|
DCL02-J | Low | Unlikely | Yes | LowNo | P3P2 | L3 |
Automated Detection
Tool | Version | Checker | Description | ||||||
---|---|---|---|---|---|---|---|---|---|
Klocwork |
| JD.UNMOD | |||||||
Parasoft Jtest |
| CERT.DCL02.ITMOD | Do not modify collection while iterating over it |
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