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V678. Object is used as an argument to …
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
OWASP errors (C#)
Additional information
Contents

V678. Object is used as an argument to its own method. Consider checking the first actual argument of the 'Foo' function.

Oct 04 2013

The analyzer has detected a call to a non-static member function in which the object itself was passed as the first argument.

A.Foo(A);

This code may probably contain an error. For example, an incorrect variable name is used because of a misprint. The correct code should look like this then:

A.Foo(B);

or like this:

B.Foo(A);

Let's see how such misprints may affect the code in real life. Here's a fragment from a real application:

CXMLAttribute* pAttr1 =
  m_pXML->GetAttribute(CXMLAttribute::schemaName);
CXMLAttribute* pAttr2 =
  pXML->GetAttribute(CXMLAttribute::schemaName);
if ( pAttr1 && pAttr2 &&
     !pAttr1->GetValue().CompareNoCase(pAttr1->GetValue()))
  ....

This code should compare two attributes. But a misprint causes the value "pAttr1->GetValue()" to be compared to itself.

This is the fixed code:

if ( pAttr1 && pAttr2 &&
     !pAttr1->GetValue().CompareNoCase(pAttr2->GetValue()))

This diagnostic is classified as:

You can look at examples of errors detected by the V678 diagnostic.

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