String literals are constant and should consequently be protected by the const qualification. This recommendation supports rule STR30-C. Do not attempt to modify string literals.
Adding const qualification may propagate through a program; as you add const qualifiers, still more become necessary. This phenomenon is sometimes called "const poisoning."
While const qualification is a good idea, the costs may outweigh the value when remediating existing code.
Non-Compliant Code Example
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Recommendation | Severity | Likelihood | Remediation Cost | Priority | Level | |||
|---|---|---|---|---|---|---|---|---|
STR05-A | 1 ( low ) | 3 (likely) | 2 (medium) | P6 | unlikely | high | P1 | L1 L2 |
Automated Detection
The LDRA tool suite V 7.6.0 is able to detect violations of this recommendation.
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