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V660. The program contains an unused la…
Analyzer Diagnostics
General Analysis (C++)
General Analysis (C#)
General Analysis (Java)
Diagnosis of micro-optimizations (C++)
Diagnosis of 64-bit errors (Viva64, C++)
MISRA errors
AUTOSAR errors
Additional information
Contents

V660. The program contains an unused label and a function call: 'CC:AA()'. It's possible that the following was intended: 'CC::AA()'.

Jan 22 2013

The analyzer has detected a potential error when the programmer makes a misprint writing ':' instead of '::'.

An unused label is found in the code of a class method. This label is followed by a function call. The analyzer considers it dangerous when a function with such a name is placed inside one of the base classes.

Consider the following sample:

class Employee {
public:
  void print() const {}
};

class Manager: public Employee {    
  void print() const;
};

void Manager::print() const {
  Employee:print();
}

The line 'Employee:print();' is very likely to be incorrect. The error is this: unlike it was intended, the function from the own class 'Manager' is called instead of the function from the 'Employee' class. To fix the error we just need to replace ':' with '::'.

This is the fixed code:

void Manager::print() const {
  Employee::print();
}

Here's one more sample:

namespace Abcd
{
  void Foo() {}
}

class Employee {
  void Foo() {}
  void X() { Abcd:Foo(); }
};

The error here is this: the function within the scope of 'Abcd' should have been called. This error is easy to fix:

void X() { Abcd::Foo(); }

This diagnostic is classified as:

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