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37 lines
1.0 KiB
Plaintext
37 lines
1.0 KiB
Plaintext
/**
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* @name Function is never called
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* @description Unused functions may increase object size, decrease readability, and create the possibility of misuse.
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* @kind problem
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* @id cpp/dead-code-function
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* @problem.severity warning
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* @tags maintainability
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* external/cwe/cwe-561
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*/
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import cpp
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predicate limitedScope(Function f) {
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f.isStatic() and not f instanceof MemberFunction
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or
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f.(MemberFunction).isPrivate()
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}
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predicate uncalled(Function f) {
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limitedScope(f) and
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not exists(Function g | g = f or g = f.(VirtualFunction).getAnOverriddenFunction+() |
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exists(g.getACallToThisFunction()) or
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exists(FunctionAccess fa | fa.getTarget() = g)
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)
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}
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from Function f
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where
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uncalled(f) and
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forall(Function instance | f.(TemplateFunction).getAnInstantiation() = instance |
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uncalled(instance)
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) and
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// tweaks for good results:
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exists(f.getBlock()) and
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not (f instanceof Constructor or f instanceof Destructor or f.hasName("operator="))
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select f, "Dead Code: this function is never called."
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