To get a trial key
fill out the form below
Team License (a basic version)
Enterprise License (an extended version)
* By clicking this button you agree to our Privacy Policy statement

Request our prices
New License
License Renewal
--Select currency--
USD
EUR
GBP
RUB
* By clicking this button you agree to our Privacy Policy statement

Free PVS-Studio license for Microsoft MVP specialists
* By clicking this button you agree to our Privacy Policy statement

To get the licence for your open-source project, please fill out this form
* By clicking this button you agree to our Privacy Policy statement

I am interested to try it on the platforms:
* By clicking this button you agree to our Privacy Policy statement

Message submitted.

Your message has been sent. We will email you at


If you haven't received our response, please do the following:
check your Spam/Junk folder and click the "Not Spam" button for our message.
This way, you won't miss messages from our team in the future.

>
>
>
V672. It is possible that creating a ne…
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

V672. It is possible that creating a new variable is unnecessary. One of the function's arguments has the same name and this argument is a reference.

Apr 29 2013

The analyzer has detected a possible error: a variable is being declared whose name coincides with that of one of the arguments. If the argument is a reference, the whole situation is quite strange. The analyzer also imposes some other conditions to reduce the number of false positives, but there's no point describing them in the documentation.

To understand this type of errors better, have a look at the following sample:

bool SkipFunctionBody(Body*& body, bool t)
{
  body = 0;
  if (t)
  {
    Body *body = 0;
    if (!SkipFunctionBody(body, true))
      return false;
    body = new Body(body);
    return true;
  }
  return false;
}

The function requires a temporary variable to handle the SkipFunctionBody () function. Because of inattention, the programmer once again declares a temporary variable 'body' inside the 'if' block. It means that this local variable will be modified inside the 'if' block instead of the 'body' argument. When leaving the function, the 'body' variable's value will be always NULL. The error might reveal itself further, somewhere else in the program, when null pointer dereferencing takes place. We need to create a local variable with a different name to fix the error. This is the fixed code:

bool SkipFunctionBody(Body*& body, bool t)
{
  body = 0;
  if (t)
  {
    Body *tmp_body = 0;
    if (!SkipFunctionBody(tmp_body, true))
      return false;
    body = new Body(tmp_body);
    return true;
  }
  return false;
}

You can look at examples of errors detected by the V672 diagnostic.

This website uses cookies and other technology to provide you a more personalized experience. By continuing the view of our web-pages you accept the terms of using these files. If you don't want your personal data to be processed, please, leave this site.
Learn More →
Accept